Journal of Constructional Steel Research最新文献_第10页

Post-fire and cold-formed properties of a novel high nitrogen stainless steel S35657

IF 4 2区工程技术

Journal of Constructional Steel Research Pub Date : 2025-01-15 DOI: 10.1016/j.jcsr.2024.109305

Xin Yu , Bo-Yan Zhu , Yidu Bu , Xiao-Dong Zhang , Li-Ming Shi

{"title":"Post-fire and cold-formed properties of a novel high nitrogen stainless steel S35657","authors":"Xin Yu , Bo-Yan Zhu , Yidu Bu , Xiao-Dong Zhang , Li-Ming Shi","doi":"10.1016/j.jcsr.2024.109305","DOIUrl":"10.1016/j.jcsr.2024.109305","url":null,"abstract":"<div><div>Stainless steel exhibits several advantages as structural material, however its applications are limited due to the high cost. A novel stainless steel, S35657, which replaced the valuable nickel element with cheap nitrogen, was designed to make its use more economical. This study aims to clarify the potential structural application of the novel stainless steel. Tensile tests were firstly conducted to investigate the effect of steel rolling direction, cold-forming enhancement and welding on the behaviour of grade S35657, with comparisons made to commonly used stainless steel S30408 and mild steel Q355. The test results revealed that S35657 grade exhibited higher strength compared to stainless steel S30408, attributed to the added nitrogen element. The post-fire behaviour of S35657 up to 1200 °C under unloaded conditions was tested, alongside its post-cold-forming behaviour. This thermo-mechanical property characterisation indicated no significant strength deterioration until the exposed temperature exceeded 800 °C, although the benefits of cold-forming diminished above 500 °C. Based on the test results, the existing stress–strain model was modified to accurately represent the pre- and post-fire stress–strain response for grade S35657. Finally, 1269 test data of S35657 stainless steel were collected and statistically analysed. The partial resistance factor of grade S35657 was determined as 1.15 when the standard value of nominal yield strength was selected as 381.9 MPa.</div></div>","PeriodicalId":15557,"journal":{"name":"Journal of Constructional Steel Research","volume":"227 ","pages":"Article 109305"},"PeriodicalIF":4.0,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143310374","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Tensile stress-strain models for wire and arc additive manufacturing of carbon steels

IF 4 2区工程技术

Journal of Constructional Steel Research Pub Date : 2025-01-13 DOI: 10.1016/j.jcsr.2025.109332

Yunyi Liu , Jun Ye , Xi Guo , Guan Quan , Zhen Wang , Yang Zhao

{"title":"Tensile stress-strain models for wire and arc additive manufacturing of carbon steels","authors":"Yunyi Liu , Jun Ye , Xi Guo , Guan Quan , Zhen Wang , Yang Zhao","doi":"10.1016/j.jcsr.2025.109332","DOIUrl":"10.1016/j.jcsr.2025.109332","url":null,"abstract":"<div><div>This paper aims to investigate and develop stress-strain models for wire arc additive manufacturing (WAAM) carbon steels, providing a clear understanding of their mechanical behaviour. A comprehensive dataset comprising over 700 worldwide WAAM carbon steel tensile coupon test records from open literature was analysed. The dataset considered a variety of feedstock wires, post-treatments, surface conditions, deposition strategies, coupon extraction angles, and material thicknesses. Analysis revealed that stress-strain curves of WAAM carbon steels exhibited varying yielding responses, either discontinuous yielding with a distinct yield plateau or continuous yielding without one, depending on the feedstock wire grades and coupon extraction angles. Three tensile stress-strain models were proposed, alongside predictive expressions or recommended values for the input material parameters. These models accurately capture the stress-strain responses of WAAM carbon steels and are suitable for incorporation into analytical, numerical and design models for WAAM steel structures.</div></div>","PeriodicalId":15557,"journal":{"name":"Journal of Constructional Steel Research","volume":"227 ","pages":"Article 109332"},"PeriodicalIF":4.0,"publicationDate":"2025-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143310332","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Study the mechanical properties of LY160 steel under large strains

IF 4 2区工程技术

Journal of Constructional Steel Research Pub Date : 2025-01-13 DOI: 10.1016/j.jcsr.2025.109339

Yongqiang Yang , Xu Zhang , Tao Jiang , Junwu Dai , Hui Pang

{"title":"Study the mechanical properties of LY160 steel under large strains","authors":"Yongqiang Yang , Xu Zhang , Tao Jiang , Junwu Dai , Hui Pang","doi":"10.1016/j.jcsr.2025.109339","DOIUrl":"10.1016/j.jcsr.2025.109339","url":null,"abstract":"<div><div>This research develops a flat specimen based on short column buckling theory to study the mechanical properties of LY160 steel under large strains. The parameter analysis performed by the finite element method provides a thorough discussion of the flat specimen's dimensions. Simultaneously, a design outline for LYP steel coupons with robust buckling resistance is proposed. The Digital Image Correlation (DIC) system is then presented in order to examine the uniaxial compressive and tensile properties of LY160 steel. Displacement comparisons across different gauge lengths are conducted to ascertain the strain states of the specimen during tests. In the meantime, the hysteretic behavior of LY160 steel is investigated using two control techniques: extensometer strain control and crosshead displacement control. The disparate hysteretic modes between two gauges are compared, and the reasons for the significant variances are thoroughly discussed. The findings indicate that deformation in the transition section is significant and the DIC system provides valuable data for studying the ductile fracture of LY160 steel under large strains.</div></div>","PeriodicalId":15557,"journal":{"name":"Journal of Constructional Steel Research","volume":"227 ","pages":"Article 109339"},"PeriodicalIF":4.0,"publicationDate":"2025-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143310372","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Experimental assessment on structural behaviour of short concrete-filled S690 steel tubes

IF 4 2区工程技术

Journal of Constructional Steel Research Pub Date : 2025-01-13 DOI: 10.1016/j.jcsr.2025.109325

P.F. Men , H.C. Ho , T.K. Li , X.D. Wang , K.F. Chung , X.H. Zhou

{"title":"Experimental assessment on structural behaviour of short concrete-filled S690 steel tubes","authors":"P.F. Men , H.C. Ho , T.K. Li , X.D. Wang , K.F. Chung , X.H. Zhou","doi":"10.1016/j.jcsr.2025.109325","DOIUrl":"10.1016/j.jcsr.2025.109325","url":null,"abstract":"<div><div>A systematic assessment on the structural behaviour of short concrete-filled columns with S690 square and circular steel tubes under compression is presented. A total of 32 compression tests were conducted on two types of short columns, i.e. steel columns and concrete-filled steel tubes. Steel tubes with S355 to S690, and C60/75 concrete were employed in these compression tests. It is shown that concrete-filled circular steel tubes with S690 steel and C60/75 concrete exhibit high ductility under compression, and significant enhancement in their compression resistances is readily achieved. However, for those concrete-filled square steel tubes with S690 steel and C60/75 concrete, only limited ductility and enhancement under compression is attained. Through comprehensive analyses on measured strains of the steel tubes of both the steel columns and the concrete-filled steel tubes, the section resistances provided by the steel tubes and the infilled concrete are successfully quantified. Despite the design rules in EN 1994–1 are recommended for composite columns up to S460 steel and C50/60 concrete, it is demonstrated that these rules are equally applicable to concrete-filled steel tubes with S690 steel and C60/75 concrete after comparison with the 16 test data reported in this paper and other 38 test data reported in the literature. However, significant discrepancies on individual resistances between the measured and the predicted values of the steel tubes and the infilled concrete are found, indicating that it is necessary to improve predictability of these design rules.</div></div>","PeriodicalId":15557,"journal":{"name":"Journal of Constructional Steel Research","volume":"227 ","pages":"Article 109325"},"PeriodicalIF":4.0,"publicationDate":"2025-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143310353","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Experimental investigation on cold-formed steel built-up columns based on modular component method

IF 4 2区工程技术

Journal of Constructional Steel Research Pub Date : 2025-01-13 DOI: 10.1016/j.jcsr.2025.109336

Yanchun Li , Tianhua Zhou , Yan Lu , Aihong Han , Yun Xu

{"title":"Experimental investigation on cold-formed steel built-up columns based on modular component method","authors":"Yanchun Li , Tianhua Zhou , Yan Lu , Aihong Han , Yun Xu","doi":"10.1016/j.jcsr.2025.109336","DOIUrl":"10.1016/j.jcsr.2025.109336","url":null,"abstract":"<div><div>This study aims to investigate the buckling behavior, assembly effects, and ultimate capacity of cold-formed steel columns. The research encompasses five distinct types of cross-sectional columns, namely C-sections, U-sections, modular components, and closed sections, which were analyzed through both experimental and theoretical approaches. The failure modes of the columns were summarized, and the underlying reasons for these failures were elucidated. Compression tests were performed to assess the impact of cross-sectional dimensions, plate assembly effects, and screw spacing. Additionally, evaluations of material properties and measurements of imperfections were conducted. The test results, including the ultimate load, were compared with predictions derived from the current Effective Width Method (EWM) and Direct Strength Method (DSM) design approaches. The results indicate that the EWM tends to be excessively conservative, whereas the DSM presents a marginally unsafe assessment. A novel design method is proposed based on the experimental investigations presented in this paper. This new approach integrates the effects of screw restraint and plate group interactions into the design principles for predicting the ultimate capacity of box section columns, specifically utilizing a superposition method of the modular component. Ultimately, the proposed method was evaluated using test data alongside the EWM and DSM. Reliability analysis demonstrated that the proposed method offers more accurate and safer predictions for ultimate capacity compared to the original EWM and DSM as outlined in the AISI-S100 specifications.</div></div>","PeriodicalId":15557,"journal":{"name":"Journal of Constructional Steel Research","volume":"227 ","pages":"Article 109336"},"PeriodicalIF":4.0,"publicationDate":"2025-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143310373","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dynamic mechanical behaviors of welded joints in power transmission construction project

IF 4 2区工程技术

Journal of Constructional Steel Research Pub Date : 2025-01-13 DOI: 10.1016/j.jcsr.2025.109338

Zhouyu Li , Xinjian Yuan , Bo Yang , Ke Wang , Yikun Zhao , Jiantao Sun , Jiaxi Li , Guikun Yang , Chengju Qiu , Ting Li

{"title":"Dynamic mechanical behaviors of welded joints in power transmission construction project","authors":"Zhouyu Li , Xinjian Yuan , Bo Yang , Ke Wang , Yikun Zhao , Jiantao Sun , Jiaxi Li , Guikun Yang , Chengju Qiu , Ting Li","doi":"10.1016/j.jcsr.2025.109338","DOIUrl":"10.1016/j.jcsr.2025.109338","url":null,"abstract":"<div><div>S355 welded joints are the weak links in the deflagration accidents in power transmission building projects, and the study of their mechanical behavior under dynamic impact is beneficial to effectively improve the safety of welds in service. At present, there is no systematic research on the strength and plasticity of various regions in S355 welded joints, and it is difficult to refer for the structural design of welded joints in various industries. In this study, the mechanical properties of S355 welded joints under quasi-static, dynamic(500–6000 s-1) and high-temperature(100–700 °C) and different stress states were obtained for different micro-regions of S355 welded joints in service in power transmission projects. The main reasons for the differences in mechanical properties of each zone were analyzed in combination with SEM. Finally, the Johnson-Cook intrinsic model and fracture criterion were proposed and modified using the experimental data. After the finite element simulation verification, the average error of the modified formula is only 7.15 %, which can be effectively used for weld refinement modeling analysis.</div></div>","PeriodicalId":15557,"journal":{"name":"Journal of Constructional Steel Research","volume":"227 ","pages":"Article 109338"},"PeriodicalIF":4.0,"publicationDate":"2025-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143310375","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Impact of member interaction on static mechanical performance of steel-aluminum composite gusset joints

IF 4 2区工程技术

Journal of Constructional Steel Research Pub Date : 2025-01-12 DOI: 10.1016/j.jcsr.2024.109296

Xiyu Wei , Xiuli Wang

{"title":"Impact of member interaction on static mechanical performance of steel-aluminum composite gusset joints","authors":"Xiyu Wei , Xiuli Wang","doi":"10.1016/j.jcsr.2024.109296","DOIUrl":"10.1016/j.jcsr.2024.109296","url":null,"abstract":"<div><div>This study investigated the influence of member interaction in steel‑aluminum composite gusset joints on their static mechanical performance. Analysis of 11 joint types, compared with pure steel and pure aluminum alloy gusset joints, reveals that steel members, having greater stiffness than aluminum alloy members, exhibit a larger stress distribution. The composite gusset joints undergo non-centrally symmetrical deformation and member torsion. The interaction between the members significantly affects the initial stiffness of the composite gusset joints. Specifically, aluminum alloy members increase the initial stiffness of adjacent steel members but reduce the stiffness of steel members in secondary adjacent or opposite positions. Conversely, steel members have the opposite effect on aluminum alloy members. Additionally, increased joint constraints and the member's moment of inertia amplify the effects of member interactions on initial stiffness. Analysis of 3960 moment-rotation curves clarifies the interaction coefficient rules and presents a method for calculating the initial stiffness of steel‑aluminum composite gusset joints.</div></div>","PeriodicalId":15557,"journal":{"name":"Journal of Constructional Steel Research","volume":"227 ","pages":"Article 109296"},"PeriodicalIF":4.0,"publicationDate":"2025-01-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143310351","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Performance of partially encased composite stub columns after high-temperature exposure

IF 4 2区工程技术

Journal of Constructional Steel Research Pub Date : 2025-01-12 DOI: 10.1016/j.jcsr.2024.109308

Yong Zhu , Hanqi Du , Chao Liu , Hua Yang , Yuyin Wang , Lifeng Xu

{"title":"Performance of partially encased composite stub columns after high-temperature exposure","authors":"Yong Zhu , Hanqi Du , Chao Liu , Hua Yang , Yuyin Wang , Lifeng Xu","doi":"10.1016/j.jcsr.2024.109308","DOIUrl":"10.1016/j.jcsr.2024.109308","url":null,"abstract":"<div><div>Partially-encased composite (PEC) structural members are now gaining increasing popularity in the construction sector. The local encasement of concrete improves the buckling resistance of the steel section, resulting in excellent bearing capacity, and the feature of convenience in connection remains. However, due to the partially exposed cross-sectional characteristics of steel, investigations into the fire-relevant performance of the PEC members are necessary and important. Thus, the post-fire mechanical behaviour of the PEC stub columns was determined as the main focus of this work. Nineteen test specimens with steel contribution ratios ranging from 0.68 to 0.76 were examined via a sequential heating-loading test procedure. The reductions of the axial bearing capacities after elevated-temperature exposures with 60 min heating (to 900 °C), 60 min heating and 30 min holding, and 60 min heating and 60 min holding are approximately 6 %, 25 % and 30 %. A finite element (FE) model was then developed based on the test results and the sensitivities of the structural parameters, including material selection, geometric characteristics and fire exposure experience, on the post-fire behaviour of the PEC stub columns were identified. The influence of the key parameters on the post-fire performance of the PEC stub columns with fire protection was also studied. Design equations were proposed based on the FE results for the PEC members with and without fire protection, in order to facilitate relevant post-fire assessment and strengthening design for the PEC structures.</div></div>","PeriodicalId":15557,"journal":{"name":"Journal of Constructional Steel Research","volume":"227 ","pages":"Article 109308"},"PeriodicalIF":4.0,"publicationDate":"2025-01-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143310339","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Cyclic performance of prefabricated buckling-restrained steel plate shear wall with two-side connections

IF 4 2区工程技术

Journal of Constructional Steel Research Pub Date : 2025-01-12 DOI: 10.1016/j.jcsr.2024.109293

Yanxia Zhang , Yidan Cui , Dawei Zhang , Ziyang Liu , Yanglong Li

{"title":"Cyclic performance of prefabricated buckling-restrained steel plate shear wall with two-side connections","authors":"Yanxia Zhang , Yidan Cui , Dawei Zhang , Ziyang Liu , Yanglong Li","doi":"10.1016/j.jcsr.2024.109293","DOIUrl":"10.1016/j.jcsr.2024.109293","url":null,"abstract":"<div><div>A new prefabricated buckling-restrained steel plate shear wall (PBRSPSW) with two-side connections was proposed. It mainly consists of an internal steel plate and steel panels with channels. Two specimens were designed and subjected to quasi-static loading tests to compare the seismic performance of the ordinary steel plate shear wall (SPSW) against the novel PBRSPSW. The experimental results indicate that the bearing capacity of the PBRSPSW is 52.32 % higher than that of the SPSW. At the end of loading, the stiffness loss of the SPSW was 78.93 % and that of the PBRSPSW was 46.67 %. This data demonstrates that the addition of channel steel on both sides of the steel plate can enhance the load-bearing capacity of the shear wall and effectively mitigate out-of-plane deformation, resulting in superior seismic performance compared to conventional steel plate shear walls. Moreover, slotted holes were strategically provided in the internal steel plate to facilitate the frictional energy dissipation mechanism between the internal steel plate and the steel panels. Based on the test results, an effective numerical model was established, enabling comprehensive stress-strain development analysis and stress mechanism assessment. The PBRSPSW proposed in this study offers the advantage of efficient assembly, providing a valuable reference for future in-depth research.</div></div>","PeriodicalId":15557,"journal":{"name":"Journal of Constructional Steel Research","volume":"227 ","pages":"Article 109293"},"PeriodicalIF":4.0,"publicationDate":"2025-01-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143310340","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Experimental and theoretical investigation of beam-to-upright subassemblies for HBSSR against progressive collapse

IF 4 2区工程技术

Journal of Constructional Steel Research Pub Date : 2025-01-12 DOI: 10.1016/j.jcsr.2025.109334

Liusi Dai , Jinchen Shi , Shen Yan , Chong Ren

{"title":"Experimental and theoretical investigation of beam-to-upright subassemblies for HBSSR against progressive collapse","authors":"Liusi Dai , Jinchen Shi , Shen Yan , Chong Ren","doi":"10.1016/j.jcsr.2025.109334","DOIUrl":"10.1016/j.jcsr.2025.109334","url":null,"abstract":"<div><div>This paper presents an experimental and theoretical investigation into beam-to-upright subassemblies in the high-rise braced steel storage racks (HBSSR) during a progressive collapse. A total of five double-half-span subassemblies were tested under a middle-column-removal scenario, involving various pallet loads, beam spans, connection types and bolt numbers. Three main failure modes, including tab cracking, bolt bearing and beam end failure and their combination, were observed in the tests. The development of the collapse-resisting mechanisms in the subassemblies are analyzed. Both flexural action and catenary action contribute to the collapse resistance of the subassemblies, with catenary action dominating ultimate resistance. The effects of critical geometric parameters on the collapse-resisting performance are also investigated. The ductility of the subassembly is improved when the beam span increases and the pallet loads exist. For Tab + Bolt (TB) connections, increased bolt number leads to increase of ultimate resistance and to decrease of ductility. For purely-bolted (PB) connections, increased bolt number impairs both ultimate resistance and ductility. Therefore, compared with the PB connections, the TB connections are preferable due to their better ductility in the collapse-resisting design. Moreover, a theoretical model based on the Component Method is developed to characterize the full-range load-displacement behaviour of beam-to-upright subassemblies. Validated against test results, the proposed model shows proper predictions of load-displacement curve and failure phenomenon.</div></div>","PeriodicalId":15557,"journal":{"name":"Journal of Constructional Steel Research","volume":"227 ","pages":"Article 109334"},"PeriodicalIF":4.0,"publicationDate":"2025-01-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143310352","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0