Journal of building engineering最新文献

{"title":"Experimental study on spatial joint of prefabricated steel reinforced concrete multi-floored grain warehouse","authors":"Zidan Li ,&nbsp;Yonggang Ding ,&nbsp;Jinquan Zhao ,&nbsp;Chengzhou Guo ,&nbsp;Zhenhua Xu ,&nbsp;Qikeng Xu ,&nbsp;Guoqi Ren ,&nbsp;Heng Liu","doi":"10.1016/j.jobe.2025.112001","DOIUrl":"10.1016/j.jobe.2025.112001","url":null,"abstract":"<div><div>As a new type of grain storage facility, multi-floored grain warehouses (MGWs) are widely used in China due to their effective space utilization and large storage capacity. However, the current of construction cast-in-place reinforced concrete (RC) MGW is faced with numerous challenges, such as the labor shortages and limited natural resources. To optimize the structural form of MGW and effectively reduce the amount of on-site wet work, a new prefabricated steel reinforced concrete (SRC) beam-column-slab joint connection and construction method suitable for MGW is proposed. In the experiment, different grain loading conditions are used as parameters to reflect real stress conditions in the MGW. On this basis, three prefabricated SRC spatial joint specimens are designed, fabricated, and subjected to cyclic loading tests. The main research focuses on failure modes, hysteretic characteristics, load-bearing capacity, ductility, energy dissipation, and stiffness degradation under single-sided grain loading conditions. The test results show that the shape of the hysteresis curves of the specimens is consistent under different conditions, with beam-end plastic hinge failure as the primary mode. Cracks in the columns and beams intensified, the slope of the skeleton curve’s strengthening segment decreases, and load-bearing capacity decays faster from empty to full storage conditions. The peak load and peak displacement under full storage conditions are reduced by 10.8 % and 15.7 %, respectively, compared to empty storage conditions. Based on the skeleton curve and stiffness degradation models, a hysteretic model for the prefabricated SRC beam-column joints is established and validated through finite element analysis (FEA) model and experimental results. It can be concluded that the proposed model can produce reasonable predictions of load-displacement relationship of SRC MGW.</div></div>","PeriodicalId":15064,"journal":{"name":"Journal of building engineering","volume":"103 ","pages":"Article 112001"},"PeriodicalIF":6.7,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143396176","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}

{"title":"Stability of double-skin truss-reinforced composite shear wall under axial compression","authors":"Ying Qin ,&nbsp;Yang Liu ,&nbsp;Guolin Yang ,&nbsp;Guangen Zhou ,&nbsp;Xiongliang Zhou ,&nbsp;Arumi Izaazwazini Ramli","doi":"10.1016/j.jobe.2025.111930","DOIUrl":"10.1016/j.jobe.2025.111930","url":null,"abstract":"<div><div>Traditional reinforced concrete shear walls have the disadvantages of significant weight, limited ductility, and prolonged construction cycles. Double-skin composite shear walls, which consist of two steel plates and the infilled concrete, effectively address these issues. However, these walls feature thinner cross-sections than traditional concrete shear walls and thus, the stability of the walls under axial compression is quite important especially at the bottom of the high-rise buildings. In this paper, the stability of a newly proposed double-skin truss-reinforced composite shear wall under axial compression was investigated. Axial compressive tests were conducted on seven specimens and the failure modes were obtained. The influences of wall thickness, wall width, steel plate thickness, and boundary condition on the stability of the specimens were evaluated. Finite element models were established using ABAQUS, and the accuracy of the model was verified by comparing with the experimental results. Parametric analysis was further performed to investigate the influences of parameters such as wall height, wall width, wall thickness, steel plate thickness, and truss spacing on the ultimate strength of the wall. Meanwhile, the influences of wall width, wall thickness, steel plate thickness, and truss spacing on the stability coefficient <span><math><mrow><mi>φ</mi></mrow></math></span> were explored according to the stability coefficient <span><math><mrow><mi>φ</mi></mrow></math></span>-normalized slenderness ratio <span><math><mrow><msub><mi>λ</mi><mi>n</mi></msub></mrow></math></span> curves. It was also found that the current design codes, including GB 50936-2014, ANSI/AISC 360-22, EN 1994-1-1, CECS 624–2019, and T/CECS 926–2021, cannot be applied for the design of stability of the double-skin truss-reinforced composite shear walls. Therefore, a method for the design of stability of this type of composite shear walls was proposed. Good agreement was observed between the predictions by the established equations and the data from both tests and finite element results.</div></div>","PeriodicalId":15064,"journal":{"name":"Journal of building engineering","volume":"102 ","pages":"Article 111930"},"PeriodicalIF":6.7,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143334791","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}

{"title":"Silk fibroin as a multifunctional admixture: Exploring the synergistic effects with nanomaterials in cementitious composites","authors":"Wentao Yang ,&nbsp;Xuanzhe Zhang ,&nbsp;Xianfeng Wang ,&nbsp;Zhipeng Fu ,&nbsp;Guangming Zhu ,&nbsp;Feng Xing","doi":"10.1016/j.jobe.2025.112000","DOIUrl":"10.1016/j.jobe.2025.112000","url":null,"abstract":"<div><div>The synthesis of silk fibroin (SF) composite for eco-friendly concrete additives addresses the growing need for sustainable building materials. This study investigated the role of SF in modifying the hydration and mechanical properties of silicate cement, and the potential of SF as a multifunctional admixture in cementitious composites. The incorporation of SF into silicate cement modifies key properties, acting effectively as a water reducer, retarder, and air-entraining agent, thus facilitating the optimisation of pore structure and matrix uniformity. Building upon these advantages, the study further investigates the synergistic effects of SF combined with nanosilica (NS) or Ti₃C₂T_x (MXene) concerning rheological properties, pore distribution, cement hydration kinetics, and microstructure. Rheological evaluations indicate that the SF-SiO₂ group substantially decreased the yield stress and viscosity of the cement paste to approximately 24.8 Pa and 0.13 Pa s, while conserving about 20 % of water resources. In the SF-MXene group, the proportion of gel pores significantly increased to 84.7 % at 28 days, refining pore distribution by minimising deleterious pores and improving gel pore uniformity. Concurrently, the additional nucleation sites were supplied by NS and MXene with a high specific surface area, accelerating the hydration process and affecting subsequent exothermic reactions. This study highlights the viability of SF composites in promoting cleaner production within the construction industry, presenting a sustainable alternative.</div></div>","PeriodicalId":15064,"journal":{"name":"Journal of building engineering","volume":"102 ","pages":"Article 112000"},"PeriodicalIF":6.7,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143348329","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}

{"title":"Enhancing temperature resistance of calcium aluminate cement through carbonated steel slag","authors":"Zhaohou Chen ,&nbsp;Jiangshui Cui ,&nbsp;Yang Liu ,&nbsp;Xiaohuan Jing ,&nbsp;Bingyang He ,&nbsp;Daqiang Cang ,&nbsp;Lingling Zhang","doi":"10.1016/j.jobe.2025.111956","DOIUrl":"10.1016/j.jobe.2025.111956","url":null,"abstract":"<div><div>The conversion from metastable phase to stable phase in calcium aluminate cement (CAC) caused by temperature increase can lead to an increase in porosity and a decrease in compressive strength. This study investigated the effects of carbonated steel slag (CSS) on the hydration, microstructure, and resistance to temperature fluctuations of CAC at temperatures ranging from 20 °C to 70 °C. The results showed that the incorporation of CSS leads to the formation of carbonate-AFm (or AFt) phases (hemicarboaluminate (Hc) and monocarboaluminate (Mc)). The increase of CSS content promotes the hydration of CA and CA₂ to Hc and Mc (Hc/Mc), and weakens the hydration to C₃AH₆ and AH₃ at 70 °C. Therefore, the impact of the conversion from CAH₁₀ phase to C₃AH₆ phase on CAC is weakened. As the CSS content increases from 0 to 40 %, the loss of compressive strength of the samples decreases from 45.7 % to 10.4 % at 70 °C for 7 days, corresponding to a 77.2 % increase in temperature fluctuation resistance. Meanwhile, the addition of CSS can alleviate the increase in pore volume of CAC at 70 °C, and even lead to a decrease in CSS-40 sample.</div></div>","PeriodicalId":15064,"journal":{"name":"Journal of building engineering","volume":"102 ","pages":"Article 111956"},"PeriodicalIF":6.7,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143158320","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}

{"title":"Effect of fiber content on fracture behavior of UHPFRCC by acoustic emission technique","authors":"Chen Chen ,&nbsp;Xudong Chen","doi":"10.1016/j.jobe.2025.111979","DOIUrl":"10.1016/j.jobe.2025.111979","url":null,"abstract":"<div><div>The paper aims to study strain-harden and strain-soften fracture behavior of ultra-high performance fiber reinforced cementitious composites (UHPFRCC) with different fiber content based on acoustic emission (AE) technology. Three-point bending fracture test was performed on UHPFRC with 0 %, 1 %, and 2 % fiber content, and the fracture mechanical properties of UHPFRCC were analyzed. Meanwhile, the AE cumulative parameters, location, b-value, and crack mode were used to identify the fracture behavior of UHPFRCC. The result showed that with the increase of fiber content, the peak load and toughness of UHPFRCC increase, but the fiber content has little effect on the peak load displacement and ductility. Furthermore, cumulative AE parameters can distinguish strain-harden stage directly of UHPFRCC. And there is an exponential relationship between cumulative AE parameters and fiber content. Additionally, with the increase of fiber content, the width of fracture process zone and width of damage zone increases, and the reduction of b-value gradually decreases. The tensile crack mode is dominant in the fracture process of UHPFRCC by the k-means method, but the fiber content has little effect on the fracture mode of UHPFCC. This research can provide a theoretical basis for crack propagation and non-destructive testing of UHPFRCC in practical engineering.</div></div>","PeriodicalId":15064,"journal":{"name":"Journal of building engineering","volume":"102 ","pages":"Article 111979"},"PeriodicalIF":6.7,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143372780","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}

{"title":"A unified simplified numerical model for large-scale regional seismic simulation of building structures","authors":"Haifeng Bu ,&nbsp;Huanjun Jiang ,&nbsp;Yasushi Sanada","doi":"10.1016/j.jobe.2025.112004","DOIUrl":"10.1016/j.jobe.2025.112004","url":null,"abstract":"<div><div>To compute seismic responses of a large number of building structures quickly in an area, a unified simplified nonlinear multi-degree-of-freedom finite element model is proposed in this study for reinforced concrete (RC) structures, including frame structures, frame-shear wall structures, and shear wall structures. Corresponding parameter determination method of the simplified model is also provided. Compared with existing models, the proposed model is more convenient to determine parameters for typical RC building structures in large-scale areas. Then, the accuracy and efficiency of the proposed model are verified by comparison between the simulation results and the corresponding experimental results for one RC frame structure and one frame-shear wall structure. Finally, the capability and practicability of the proposed model are verified by a case study of the simulation of seismic responses of over 800 RC building structures in a community.</div></div>","PeriodicalId":15064,"journal":{"name":"Journal of building engineering","volume":"102 ","pages":"Article 112004"},"PeriodicalIF":6.7,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143349139","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}

{"title":"Cyclic load behavior of PC and CIP interior beam-column connections in moment resisting frames","authors":"Min-Su Jo ,&nbsp;Hyeong-Gook Kim ,&nbsp;Dong-Hwan Kim ,&nbsp;Su-A Lim ,&nbsp;Byoung-Chan Kim ,&nbsp;Jung-Yoon Lee ,&nbsp;Kil-Hee Kim","doi":"10.1016/j.jobe.2025.112011","DOIUrl":"10.1016/j.jobe.2025.112011","url":null,"abstract":"<div><div>The use of precast concrete (PC) in construction has many benefits, including improved product quality, shorter construction periods, and lower construction costs. However, to design middle-to high-rise PC structures, seismic safety must be ensured. In particular, the structural behavior of beam-column joints, which are typical moment-resisting frames, is determined by shear and bond mechanisms under seismic loads. However, shear elements and bonds are very vulnerable to cyclic loading, so the joint must always remain within the elastic zone. It is necessary to clearly evaluate whether PC beam-column joints have the performance and usability to be applied as a monolithic structural system (CIP). In this study, eight CIP and PC specimens were fabricated with different moment resisting frames (intermediate and special) and failure modes (B, BJ) as variables. The strength, ductility, strength degradation, and energy dissipation of the PC joints were evaluated and compared to those of CIP joints. Furthermore, the structural behavior of the joints after plastic hinging of the beams was evaluated. The experimental results showed that the PC specimens exhibited the same behavior as the CIP specimens in terms of crack pattern and story shear-drift ratio. However, in terms of ductility, the S-series showed about 10–20 % improvement in ductility for PC compared to CIP, and similar trends in energy dissipation capacity. The strain inside the joint increased at the story drift ratio of 2.0 % after the plastic hinging of the beam, and the bond stress in the center of the joint panel zone tended to be higher in the PC specimen than in the CIP specimen. In addition, the shear strain in the joint panel zone tended to be higher in the special moment resisting frame than in the intermediate moment resisting frame, and an inverse relationship with the displacement ductility index was confirmed.</div></div>","PeriodicalId":15064,"journal":{"name":"Journal of building engineering","volume":"102 ","pages":"Article 112011"},"PeriodicalIF":6.7,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143359568","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}

{"title":"Influence of curing regimes and duration on the early strength development of fibers based reactive powder concretes","authors":"Subhash C. Yaragal,&nbsp;Harshkumar V. Annigeri,&nbsp;Nithish Krishna K M,&nbsp;Chandrashekar Allikatti,&nbsp;Gopika Dinesh,&nbsp;M.H. Prashanth","doi":"10.1016/j.jobe.2025.112020","DOIUrl":"10.1016/j.jobe.2025.112020","url":null,"abstract":"<div><div>Curing regimes play a crucial role in enhancing the early strength and overall performance of reactive powder concrete (RPC). This study focuses on the influence of different curing regimes on the early strength development of various fibers based RPC mixes. RPC mixes were produced adopting four-stage mixing method. The hot water curing (HWC) and steam curing (SC) regimes achieved a strength of 84 MPa at 24 and 48 h, respectively, being equivalent to the strength of RPC under 28 days of conventional method of water curing (WC). The combined curing (CC) (1 day HWC at 100 °C followed by 7 days of oven hot air curing at 200 °C) and air curing (AC) resulted in the highest and lowest strength of 120 and 74 MPa, while hot air curing (HAC) gave a strength of 96 MPa. Different fibers adopted showed negligible influence on the variation in strength. SEM results revealed that HWC and SC produced predominantly a plate-like tobermorite and dense thick fibrous tobermorite. The HAC and CC regimes showed the presence of tobermorite and xonotlite in the diffraction pattern, whilst HWC and SC displayed tobermorite alone. Nuclear magnetic resonance spectroscopy (NMR) results showed that there is an increase in the hydration degree for hydrothermally treated curing regimes (SC, HWC, and CC) except heat treated (HAC), resulting in higher strength. At higher temperature, the existing chain-like silicates get converted to sheet-like silicates, increasing the mean chain length of C-S-H and degree of connectivity. In summary, the CC regime can be adopted in the construction industry, as it stands out as the most favourable one among all the curing methods for attaining high early strength.</div></div>","PeriodicalId":15064,"journal":{"name":"Journal of building engineering","volume":"102 ","pages":"Article 112020"},"PeriodicalIF":6.7,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143372864","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}

{"title":"Experimental and numerical study on seismic performance of H-beam to HSST column joints connected by elliptical head one-sided bolts","authors":"Weitong Yi ,&nbsp;Lei Zhu ,&nbsp;Zhe Wang ,&nbsp;Hailin Sun ,&nbsp;Fei Yin","doi":"10.1016/j.jobe.2025.111855","DOIUrl":"10.1016/j.jobe.2025.111855","url":null,"abstract":"<div><div>One-sided bolts, commonly used to connect components with closed cross sections, pose challenges in terms of construction and installation. To address these challenges, elliptical head one-sided bolt (EHOB) was introduced, offering simplified installation without the requirement of specialized tools. This research aim to investigate seismic performance of H-beam to Hollow Square Steel Tubular (HSST) column joints connected by EHOBs. First, two types of innovative bolt hole inhibiting components were designed using 3D printing technology to prevent bolt rotation during the tightening process. Then, four sets of pseudo-static experiments were conducted, followed by finite element analysis for verification. Further parametric studies were performed to examine the impact of various factors on the moment-angle relationships of different joints. Finally, a method for calculating the initial stiffness of joints was developed. Key conclusions from the research are: (1) The joints showed excellent rotational performance and energy dissipation. (2) No significant bolt failure occurred during testing, indicating that EHOBs perform reliably under cyclic loading. However, the thickness of the column and endplate had a greater impact on the seismic performance. (3) Pins are the most effective inhibiting components, significantly improving the seismic performance of the joint.</div></div>","PeriodicalId":15064,"journal":{"name":"Journal of building engineering","volume":"102 ","pages":"Article 111855"},"PeriodicalIF":6.7,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143378015","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}

{"title":"Experimental study on the eccentric compressive behavior of steel reinforced concrete composite columns with stay-in-place ECC jacket","authors":"Bing-Lin Lai ,&nbsp;Xiang Zhou ,&nbsp;Ming-Yang Zhang ,&nbsp;Xiao-Feng Zheng ,&nbsp;Sheng-Gang Fan","doi":"10.1016/j.jobe.2025.112007","DOIUrl":"10.1016/j.jobe.2025.112007","url":null,"abstract":"<div><div>Steel Reinforced Concrete (SRC) column with stay-in-place ECC jacket is a novel type of composite columns synergizing the merits of advanced construction materials and precast technologies. This study experimentally investigates the eccentric compressive behavior of ECC-SRC columns. The optimal fiber content and mix proportion desirable for jacket were determined prior to the specimen fabrication. The test variables include the load eccentricity, ECC jacket thickness, presence of stirrups and the jacket surface treatment. In addition, two conventional SRC columns were also tested as control specimens. The test results in terms of failure mode, deformation response, flexural stiffness, load-carrying capacity, post-peak ductility and residual capacity were evaluated in detail, and Digital Image Correction (DIC) technique was also employed for better visualization of crack distribution and strain field. Based on the test results, the interaction between profiled steel, infilled concrete and the ECC jacket was analyzed to uncover the load-carrying mechanism of ECC-SRC columns. Finally, the axial force-bending moment (N-M) interaction diagrams constructed by current design code EN 1994-1-1 are compared with tested capacity, based on which design recommendation was proposed to facilitate the design and application of ECC-SRC columns.</div></div>","PeriodicalId":15064,"journal":{"name":"Journal of building engineering","volume":"102 ","pages":"Article 112007"},"PeriodicalIF":6.7,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143359565","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}