Media Komunikasi Teknik Sipil最新文献_第3页

Probabilistic Seismic Hazard Analysis at New Capital in Indonesia 印尼新首都概率地震灾害分析

Media Komunikasi Teknik Sipil Pub Date : 2023-01-30 DOI: 10.14710/mkts.v28i2.44682

Rocky Mountainshia, P. Rahardjo, D. D. Aditramulyadi

{"title":"Probabilistic Seismic Hazard Analysis at New Capital in Indonesia","authors":"Rocky Mountainshia, P. Rahardjo, D. D. Aditramulyadi","doi":"10.14710/mkts.v28i2.44682","DOIUrl":"https://doi.org/10.14710/mkts.v28i2.44682","url":null,"abstract":"Efforts to move the Capital of Indonesia to Kalimantan are intended to solve the problem of overpopulation in Jakarta, so it’s possible there are massive infrastructure development in the future. In this study conducted Probabilistic Seismic Hazard Analysis (PSHA) and made an earthquake hazard map that serves to analyze earthquake-resistant buildings for the New Capital of Indonesia. The PSHA and earthquake map was developed for 2% probability exceeded in 50 years or 2500-return period. The results of the analysis on three important periods, comprised of PGA, Ss, and S1 with a return period of 2500 years have higher acceleration at bedrock if performed by GMPE 2017 rather than GMPE 2010 for the period between PGA and 0.1s. Maximum earthquake acceleration on bedrock resulting from the creation of earthquake hazard maps in New Capital of Indonesia for period of PGA, 0.2s, and 1.0s at bedrock for return period of 2500 years is 0.2-0.25g, 0.4-0.5g, and 0-0.15g, respectively. The earthquake threat index in the New Capital of Indonesia is categorized as low according to Indonesia's National Board for Disaster Management (BNPB) regulations (PGA<0.2501g).","PeriodicalId":31880,"journal":{"name":"Media Komunikasi Teknik Sipil","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45657749","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evaluation of Seismic Behavior Due to Vertical Irregularities in High Rise Reinforced Concrete Buildings 高层钢筋混凝土建筑竖向不规则性的抗震性能评价

Media Komunikasi Teknik Sipil Pub Date : 2023-01-30 DOI: 10.14710/mkts.v28i2.41765

H. Prayuda, Ogata Wilasamba, F. Saleh, Taufiq Ilham Maulana, Fadhila Firdausa

{"title":"Evaluation of Seismic Behavior Due to Vertical Irregularities in High Rise Reinforced Concrete Buildings","authors":"H. Prayuda, Ogata Wilasamba, F. Saleh, Taufiq Ilham Maulana, Fadhila Firdausa","doi":"10.14710/mkts.v28i2.41765","DOIUrl":"https://doi.org/10.14710/mkts.v28i2.41765","url":null,"abstract":"This study investigated the behavior of high-rise reinforced concrete structures with vertical irregularities caused by seismic loading. The ability of the building to endure all of the load during operation should be considered in design process. The irregularities in the building cause to impair stiffness and performance of the structure, particularly during the earthquake. Therefore, it is necessary to evaluate the effects of vertical irregularities on building, especially high-rise buildings. This study employs an S-Shaped structure with five vertical irregularities. Numerical analysis was used by using STEDA 3D software. The dynamic load used is based on time history data from the previous earthquakes, including the El-Centro, Kobe, and Parkfield. The seismic behavior evaluated in this study consist of shear force, lateral deformation, structural stiffness, the relationship between base shear and top displacement, drift ratio, maximum acceleration response, capacity curve, and top orbit of the building. Based on the numerical analysis results, it can be concluded that each model has a different seismic performance even though it is given the same earthquake load and material properties. The vertical irregularity of the building greatly affects the behavior of the structure due to seismic analysis.","PeriodicalId":31880,"journal":{"name":"Media Komunikasi Teknik Sipil","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41832015","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Performance Assessment Study Of Road Intersection using IHCM And Microsimulation Methods PTV VISSIM (Case Study: Simpang Empat Denggung, Sleman, Yogyakarta) 基于IHCM和PTV VISSIM微仿真方法的道路交叉口性能评价研究(以日惹市新邦桥登贡、Sleman、新邦桥登贡为例)

Media Komunikasi Teknik Sipil Pub Date : 2023-01-30 DOI: 10.14710/mkts.v28i2.46077

Dedy Firmansyah, R. Jannah, Evi Puspitasari

{"title":"Performance Assessment Study Of Road Intersection using IHCM And Microsimulation Methods PTV VISSIM (Case Study: Simpang Empat Denggung, Sleman, Yogyakarta)","authors":"Dedy Firmansyah, R. Jannah, Evi Puspitasari","doi":"10.14710/mkts.v28i2.46077","DOIUrl":"https://doi.org/10.14710/mkts.v28i2.46077","url":null,"abstract":"Road intersections is designed to be able to move one lane of the road to another without any conflicts ofcongestion or traffic accidents. In planning, designing and operating road intersections services in Indonesiausing the Indonesian Highway Capacity Manual 1997 (IHCM). The use of IHCM is considered necessary toadjust to current conditions. Alternatives in the design and assessment of deviation performance can use PTVVissim microsimulation modeling. This study aims to analyze the differences in the results of the calculationof the performance road intersections using IHCM and Microsimulation of PTV Vissim. Locations used inthis study in the Denggung Road intersections of Sleman regency. The result is a significant difference in thecalculation of queue length using IHCM and Vissim. The largest queue length value from the north is 227.2meters using IHCM and 125.44 meters using Vissim where the traffic flow from the north direction has thegreatest value. The delay at the largest deviation from the north is 58.72 seconds using IHCM and 116seconds using Vissim. The second level of service value calculations show poor performance.","PeriodicalId":31880,"journal":{"name":"Media Komunikasi Teknik Sipil","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45918834","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Extreme Rainfall Characteristics Analysis Using Climate Models in the Mount Merapi Area 应用气候模型分析默拉皮山地区的极端降雨特征

Media Komunikasi Teknik Sipil Pub Date : 2022-07-29 DOI: 10.14710/mkts.v28i1.36332

E. G. A. Sapan, J. Sujono, K. Karlina

{"title":"Extreme Rainfall Characteristics Analysis Using Climate Models in the Mount Merapi Area","authors":"E. G. A. Sapan, J. Sujono, K. Karlina","doi":"10.14710/mkts.v28i1.36332","DOIUrl":"https://doi.org/10.14710/mkts.v28i1.36332","url":null,"abstract":"Extreme rainfall is one of the trigger factors for debris floods in stratovolcanos. It caused by volcanic materials will be easily eroded in large quantity with surface water flow as the result of extreme rainfall. Extreme rainfall is avnatural phenomenon which is often related with climate change. In the future, changes in extreme rainfall characteristics may occur. Therefore, it’s necessary to conduct extreme rainfall analysis for historical and future periods. In this study, the characteristics of rainfall analyzed were the variability of extreme rain as shown by trend analysis of extreme rain indices namely RTOT. Hourly rainfall data at eight rain stations used as input. Future rainfall data was projected using the global climate model CanESM2 (RCP4.5 and RCP8.5 and downscaling process using Statistical Downscaling Model (SDSM). Comparison of the projection rainfall with historical rainfall shows a different trend at each station. Increasing trend occurred at four stations including Plosokerep, Pucanganom, Sopalan, and Talun stations, with the highest increasing trend occurring at Sopalan stations. In addition, there was also a decreasing trend that occurred at Ngandong station for both scenarios and at Sorasan station in the RCP8.5 scenario. The Jrakah and Randugunting stations show a steady trend.","PeriodicalId":31880,"journal":{"name":"Media Komunikasi Teknik Sipil","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46979467","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Mechanical Behavior of Soft Soil Stabilized with Lime and Volcanic Ash 石灰和火山灰稳定软土的力学特性

Media Komunikasi Teknik Sipil Pub Date : 2022-07-29 DOI: 10.14710/mkts.v28i1.41963

N. M. Sianturi, M. K. Kamarudin, Dermina Roni Santika Damanik, Virgo Erlando Purba, Deardo Samuel Saragih

{"title":"The Mechanical Behavior of Soft Soil Stabilized with Lime and Volcanic Ash","authors":"N. M. Sianturi, M. K. Kamarudin, Dermina Roni Santika Damanik, Virgo Erlando Purba, Deardo Samuel Saragih","doi":"10.14710/mkts.v28i1.41963","DOIUrl":"https://doi.org/10.14710/mkts.v28i1.41963","url":null,"abstract":"The properties of soft clay can be seen from the compressive strength value through the unconfined compressive strength (UCS) test. Soft soil was less well used as the subgrade for construction. The aim is to determine the increase in the unconfined compressive strength and bearing capacity of the foundation due to the addition of lime and volcanic ash on soft soil. Soft soil has undrained shear strength < 25 kPa based on the unconfined compressive strength test. The unconfined compressive strength test has been conducted on the soil-lime mixture and soil-volcanic ash mixture of 3-12% respectively to the weight of dry soil. The highest unconfined compressive strength values were found in soils with 6% of lime and 9% of volcanic ash. The bearing capacity of the foundation on soil stabilized with 6% lime increased 13.7 times, while the bearing capacity of the foundation on the soil with the addition of 9% volcanic ash increased the ultimate bearing capacity of 8.7 times the bearing capacity of the foundation on soft soil. The bearing capacity of the foundation on lime stabilized soil is higher than the bearing capacity of the foundation on volcanic ash stabilized soil.","PeriodicalId":31880,"journal":{"name":"Media Komunikasi Teknik Sipil","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49164902","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Value Engineering of Beam, Column and Slab (Case: Library Building of Bengkalis) 梁、柱、板的价值工程（以孟加拉图书馆楼为例）

Media Komunikasi Teknik Sipil Pub Date : 2022-07-29 DOI: 10.14710/mkts.v28i1.33982

Monika Natalia, Zulfira Mirani, Jufrinal Syahputra

{"title":"Value Engineering of Beam, Column and Slab (Case: Library Building of Bengkalis)","authors":"Monika Natalia, Zulfira Mirani, Jufrinal Syahputra","doi":"10.14710/mkts.v28i1.33982","DOIUrl":"https://doi.org/10.14710/mkts.v28i1.33982","url":null,"abstract":"Cost construction must be planned efficiently and optimally. Value Engineering is planned approach with the aim of identifying and streamlining unnecessary costs with functional limitations and work quality (Firda, 2018). In reality, structural work using concrete estimated to over design, overcost (Apriani, 2020). This research was Bengkalis Public Library project. This building consists of 3 floors with an area of 2250 m2. The structure of beams, columns and slabs reinforced concrete. Dimensions of column 40x40 cm, main beam dimensions 40x60 cm, joist beam dimensions 25x40 cm, roof beam dimensions 30x50 cm, and slabs 15 cm with D10-100. Cost of reinforced concrete Rp. 4.297.170.000,00. In value engineering, the conversion of reinforced concrete to profile steel, cost of profile steel Rp. 4.089.619.000,00. it is obtained that the column uses WF 250.250.11.11, WF 400.200.7.11 main beam, WF 200.150.6.9 joist beam and WF 250.125.6.9 roof beam and floor slabs are converted to flourdack plate using 0.75 thickness bondack mm with wiremesh reinforcement M10-150. Cost ratio reinforced concrete and steel profiles is Rp. 207,551,000, -. Steel profiles is 5.075% cheaper than reinforced concrete structures.","PeriodicalId":31880,"journal":{"name":"Media Komunikasi Teknik Sipil","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46954384","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Efficiency of the Use of Materials of Concrete Block against Rubble Stone on Shallow Foundation Works 浅基础工程中混凝土块石材料的使用效率

Media Komunikasi Teknik Sipil Pub Date : 2022-07-29 DOI: 10.14710/mkts.v28i1.37541

S. Winarno, Hari Nuryanto, M. Teguh

{"title":"Efficiency of the Use of Materials of Concrete Block against Rubble Stone on Shallow Foundation Works","authors":"S. Winarno, Hari Nuryanto, M. Teguh","doi":"10.14710/mkts.v28i1.37541","DOIUrl":"https://doi.org/10.14710/mkts.v28i1.37541","url":null,"abstract":"Shallow foundation work with rubble stone material has several weaknesses, such as surface and shape irregularity and scarcity in a certain location. These weaknesses can be avoided through the use of concrete block material as a positive contribution for this research. This article provides the efficiency in the use of concrete blocks instead of rubble stones in shallow foundation work, by highlighting work productivity and total cost of work for both materials. Data is collected on a wall fence foundation work which implemented both materials successfully in Grogolan, Umbulmartani, Ngemplak, Sleman Yogyakarta Province. This research has revealed that the average productivity on concrete blocks and rubble stones is 0.799 m3/h and 0.590 m3/h respectively, in which there is a time efficiency that concrete block construction is 35,44% faster than that of rubble stone. Total cost of concrete block will be more expensive than rubble stone if the work volume is small, nevertheless it reaches a break-even-point at work volume of 11 m3, meaning that a cost efficiency of concrete block construction occurs if the work volume is more than 11 m3. Moreover, the implementation of concrete block has 4 intangible benefits i.e. saving space usage, minimum waste, ease of work, and more precise product.","PeriodicalId":31880,"journal":{"name":"Media Komunikasi Teknik Sipil","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48364569","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Nonlinear Time History Analysis of Flat Slab Structure With OpenSees Navigator 基于OpenSees Navigator的平板结构非线性时程分析

Media Komunikasi Teknik Sipil Pub Date : 2022-07-29 DOI: 10.14710/mkts.v28i1.38184

S. A. R. S. Hasibuan, Y. Arfiadi, Junaedi Utomo

{"title":"Nonlinear Time History Analysis of Flat Slab Structure With OpenSees Navigator","authors":"S. A. R. S. Hasibuan, Y. Arfiadi, Junaedi Utomo","doi":"10.14710/mkts.v28i1.38184","DOIUrl":"https://doi.org/10.14710/mkts.v28i1.38184","url":null,"abstract":"Structural systems that do not use a beam as the main component were first developed by Turner in 1906. This structural system is better known as a flat slab. The flat slab structure is supported by column heads and drop panels, or without drop panels, or without column heads. Several building codes such as IS 456: 2000, ACI 318-08, ACI 318-19, EC 2:2004, and NZS 3101 (Part 1):2006 provide guidance for designing flat slab systems under gravity loads only. However, many flat slab buildings are also built in areas with high earthquakes which can cause the collapse of buildings due to earthquake loads. In this paper the 10-level flat slab building structure design results are analyzed using nonlinear time history response analysis with the help of OpenSees Navigator software using several earthquake records, namely Kobe (Japan, 1995), Imperial Valley (California, 1979) and Tabas (Iran, 1978) which has been adjusted to the design spectra of the city of Yogyakarta. From the results of the analysis using OpenSees Navigator, it was found that the story drift that occurred was still within the limits required in the regulations, so that the building being reviewed was still within the limits of life safety design.","PeriodicalId":31880,"journal":{"name":"Media Komunikasi Teknik Sipil","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47922060","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Prediction of Flexural Strength of Concrete Beams Using the Response-2000 Program and Equation Approach 用响应-2000程序和方程法预测混凝土梁的抗弯强度

Media Komunikasi Teknik Sipil Pub Date : 2022-07-29 DOI: 10.14710/mkts.v28i1.42017

F. Monika, Kholil Muqorrobin, H. Prayuda, Talitha Zhafira, L. Tiyani

{"title":"Prediction of Flexural Strength of Concrete Beams Using the Response-2000 Program and Equation Approach","authors":"F. Monika, Kholil Muqorrobin, H. Prayuda, Talitha Zhafira, L. Tiyani","doi":"10.14710/mkts.v28i1.42017","DOIUrl":"https://doi.org/10.14710/mkts.v28i1.42017","url":null,"abstract":"Flexural strength is one of the mechanical properties of concrete that should be tested, especially for concrete that serves as a beam and is subjected to flexural loads. However, the assessment of flexural strength in concrete frequently relies solely on a mathematical approach that several previous researchers have found. Concrete structures continue to evolve, particularly in the use of more diverse and sustainable constituent materials. Meanwhile, the generated equations use conventional concrete without adding cementitious or replacement components. Therefore, it is necessary to investigate whether these equations can accurately predict the flexural strength of concrete with diverse constituent materials. This investigation was undertaken by reviewing 72 data sets derived from the experiment by previous researchers. Each set of test data will be compared to various formulas and will also be compared to the analysis performed using Response-2000. The results show that the correlation between Response-2000 and the experiment was 0.8207 with the linear regression equation y = 1.1326x + 1.0016. The flexural strength analysis using various approach formulas resulted in an average correlation R² of 0.8246, or 82.46% correlated to the results of the flexural strength of laboratory tests.","PeriodicalId":31880,"journal":{"name":"Media Komunikasi Teknik Sipil","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42009695","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Innovation of Prefabrication Construction Methods for Cost and Time Efficiency in The High Rise Building Project of Perum Perumnas Perum Pernas高层建筑工程预制施工方法的成本与时间效益创新

Media Komunikasi Teknik Sipil Pub Date : 2022-07-29 DOI: 10.14710/mkts.v28i1.38640

Y. A. Sari, Yanweri Dinata

{"title":"Innovation of Prefabrication Construction Methods for Cost and Time Efficiency in The High Rise Building Project of Perum Perumnas","authors":"Y. A. Sari, Yanweri Dinata","doi":"10.14710/mkts.v28i1.38640","DOIUrl":"https://doi.org/10.14710/mkts.v28i1.38640","url":null,"abstract":"Prefabrication has been widely used in construction projects. Prefabrication improves construction speed, architectural quality, material efficiency, and worker safety while limiting construction's environmental impact than conventional construction practices built on site. This research explains the advantages of prefabricated construction methods and offers an alternative method for innovation for the High Rise Building Project of Perum Perumnas. The prefabrication method is an alternative solution based on the SWOT analysis, and software for modeling and structural design is STAAD.Pro V8.I by Bentley System, inc. The research results have shown that prefabrication methods in the High Rise Building Project of Perum Perumnas can save 7% (deviation = 868.47 million) more than the current construction method (conventional). In terms of time, the prefabrication method is faster than traditional methods, with a time difference of 371 days. The estimated time required to complete upper structure work using conventional methods is 557 days. In comparison, the time needed to complete upper structure work with prefabricated methods is only 186 days, assuming the working time is eight hours per day. And the risk analysis is generally mentioned. Therefore, based on the calculation results, it can be concluded that the prefabrication method can increase the number and quality of development production in the High Rise Building Project of Perum Perumnas.","PeriodicalId":31880,"journal":{"name":"Media Komunikasi Teknik Sipil","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47597908","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0