Structural Design of Tall and Special Buildings最新文献

{"title":"An improved derivation and comprehensive understanding of the equivalent static wind loads of high‐rise buildings with structural eccentricities","authors":"Xiaowang Pan, Jie Song, Wenzhong Qu, Lianghao Zou, S. Liang","doi":"10.1002/tal.1976","DOIUrl":"https://doi.org/10.1002/tal.1976","url":null,"abstract":"The trend of constructing high‐rise buildings with irregular structural configurations results in buildings with complicated external wind loads and eccentricities between the mass and stiffness centers, which complicate the assessment of buildings' 3D equivalent static wind load (ESWL). This paper develops an improved method to determine the 3D ESWLs for high‐rise buildings with structural eccentricities. First, the derivation process of each floor's 3D internal force‐based ESWLs, including the mean, background, and resonant components, is described in detail. Then, three typical high‐rise buildings, each with 15 eccentricity cases, are used to demonstrate the proposed method's advantage in the wind resistance design of high‐rise buildings with structural eccentricities, especially in providing reliable along‐height distribution of ESWLs. Finally, systematic analyses are conducted to examine the effects of load‐correlation, structural eccentricity ratio, and building side ratio on the derived 3D ESWLs. The results show that the proposed method provides a reliable along‐height distribution, which helps give an adequate understanding of the ESWLs of high‐rise buildings with structural eccentricities. Some concluding remarks are extracted from the results to show how the load‐correlation, structural eccentricity ratio, and building side ratio affect the ESWLs of high‐rise buildings. The conclusions are valuable references for the wind‐resistant design of high‐rise buildings with structural eccentricities.","PeriodicalId":49470,"journal":{"name":"Structural Design of Tall and Special Buildings","volume":" ","pages":""},"PeriodicalIF":2.4,"publicationDate":"2022-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45399943","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Monitor wind characteristics and wind‐induced responses of a skyscraper during two typhoons","authors":"Jixing Cao, H. Xiong, Xiaoming Qin","doi":"10.1002/tal.1975","DOIUrl":"https://doi.org/10.1002/tal.1975","url":null,"abstract":"Skyscrapers are wind‐sensitive structures due to their large slenderness ratio and good flexibility. Understanding the wind characteristics and wind‐induced response from the actual data provides first‐hand information for wind resistance design. This paper reports the wind properties and dynamic performance of a 632 m high‐rise building in Shanghai during the passage of typhoons Jongdari and Rumbbia. Field measurements obtained from the structural health monitoring system include acceleration and wind speed. The data analysis of turbulence intensity, turbulence integral length, and gust factor are compared and discussed. For the identification of dynamic characteristics, the stochastic subspace method and enhanced frequency domain decomposition method are employed to identify the modal parameters. Besides, the comfort assessment using peak value and root mean square of accelerations is compared with different standards. Studying the wind characteristics during the passage of typhoons and their impact on high‐rise buildings in a metropolis is expected to gain an insight into the dynamic mechanism of high‐rise buildings and collect a database for wind resistance design in typhoon‐prone regions.","PeriodicalId":49470,"journal":{"name":"Structural Design of Tall and Special Buildings","volume":" ","pages":""},"PeriodicalIF":2.4,"publicationDate":"2022-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42049197","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Shear capacity and lateral stiffness of composite plate shear walls‐concrete encased under cyclic loading","authors":"Huafei Wang, Q. Gu, Yi-Nan Qi","doi":"10.1002/tal.1972","DOIUrl":"https://doi.org/10.1002/tal.1972","url":null,"abstract":"Composite plate shear walls‐concrete encased (C‐PSW/CE), consisting of the steel plates and concrete encasements on one or both sides of the plate, are an excellent lateral force resisting system. This paper theoretically and numerically reveals the shear resisting mechanism of C‐PSW/CE under cyclic loading. The steel web resists the lateral force through in‐plane shear before buckling, and the concrete encasements resist lateral force by diagonal compression field action. As the displacement increases, the shear force ratio of the steel web plate increases before yielding in shear and that of concrete encasements reduces. The shear force ratios of the steel web plate and concrete encasements remain essentially constant after yielding of the steel web. Considering the shear contribution of the concrete encasements, the formula is proposed to evaluate the shear capacity of C‐PSW/CE. Based on the principle of virtual work, the equation is proposed to predict the lateral stiffness of C‐PSW/CE under cyclic loading, accounting for the concrete deterioration due to cyclic effect.","PeriodicalId":49470,"journal":{"name":"Structural Design of Tall and Special Buildings","volume":" ","pages":""},"PeriodicalIF":2.4,"publicationDate":"2022-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47957733","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Restoring force model of square tubular columns filled with extra‐high‐performance reactive powder concrete","authors":"Wenxiu Hao, Xing Wei, Wanli Yu, R. Jiang, Xiao Xu","doi":"10.1002/tal.1973","DOIUrl":"https://doi.org/10.1002/tal.1973","url":null,"abstract":"Square tubular column filled with extra‐high‐performance reactive powder concrete (RPC) is a novel composite structure that takes advantage of strong bending resistance of steel tubes and high compressive strength and toughness of RPC. To study the seismic performance of square tubular columns filled with RPC, a series of low‐cycle lateral loading tests were performed on four square tubular columns filled with RPC. The steel content and steel fiber content were selected as test parameters. Experimental results show that a higher steel content and 1% steel fiber result in good energy dissipation and deformation performance of specimens. To establish the restoring force model of square tubular columns filled with RPC, 18 column models with different steel content, axial compression ratio, and slenderness ratio were simulated and analyzed using ABAQUS. The simulation results show that a larger steel content and smaller slenderness ratio can improve the column bearing capacity, but the influence of axial compression ratio is negligible. A restoring force model considering stiffness degradation is proposed using a regression analysis method, which is in good agreement with the experimental results.","PeriodicalId":49470,"journal":{"name":"Structural Design of Tall and Special Buildings","volume":" ","pages":""},"PeriodicalIF":2.4,"publicationDate":"2022-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47627930","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dynamic analysis and optimization of a wind turbine tower subject to wind and earthquake loads","authors":"Haoyun Zhu, Deyuan Li, Jun Xu","doi":"10.1002/tal.1971","DOIUrl":"https://doi.org/10.1002/tal.1971","url":null,"abstract":"A dynamic model of a wind turbine tower is established to investigate its dynamic responses under wind and earthquake loads. Then a generalized global spatial discretization method is used to solve the problem. Modal analysis of the wind turbine tower is conducted using the dynamic model and the results are verified by shell models and beam models established in the commercial FE software ANSYS and LS‐DYNA. Transient vibration displacements, as well as normal and shear stress distributions of the wind turbine tower subject to different levels of pulsing wind loads, are calculated based on the dynamic model. Quasi‐static motion and transient motion assumptions are applied to evaluate the strengths of the tower, respectively. Influences of different earthquake ground motions on vibration amplitudes of the tower top are examined. Then, a hybrid mutation particle swarm optimization algorithm is used to perform design optimization on the tower body thickness for vibration reduction with its weights and strength being constrained. The penalty function strategy is used to deal with the constraints on body weight and stress level. Results demonstrate that the comprehensive performances of the wind turbine tower especially the tower top vibration have been greatly reduced after optimization.","PeriodicalId":49470,"journal":{"name":"Structural Design of Tall and Special Buildings","volume":" ","pages":""},"PeriodicalIF":2.4,"publicationDate":"2022-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42810451","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Pseudo‐multi impulse for simulating critical response of elastic–plastic high‐rise buildings under long‐duration, long‐period ground motion","authors":"Hiroki Akehashi, I. Takewaki","doi":"10.1002/tal.1969","DOIUrl":"https://doi.org/10.1002/tal.1969","url":null,"abstract":"A pseudo‐multi impulse (PMI) is proposed as an extension of the ordinary base‐input multi impulse substituting a long‐duration, long‐period ground motion which can often be simulated by a multi‐cycle sine wave (MSW). PMI is treated as a multitude of impulsive lateral forces and hardly excites the higher‐mode responses of elastic multi‐degree‐of‐freedom (MDOF) models because the undamped fundamental participation vector is adopted as the influence coefficient vector. It is shown that the critical time interval of PMI can be obtained without any repetition. This enables a smart derivation of the critical response. The displacement transfer functions are derived for elastic MDOF models, where two kinds of the influence coefficient vectors are adopted: (1) one at every component (conventional one) and (2) the undamped fundamental‐mode participation vector. It is demonstrated that the critical PMI can efficiently and accurately evaluate the maximum responses under MSW and the critical input period of MSW for elastic–plastic MDOF models. Furthermore, PMI is extended to treat the critical case for the second eigenmode. Finally, the critical PMI is applied to high‐rise buildings for the investigation into the input energy and the cumulative plastic deformation ductility demand.","PeriodicalId":49470,"journal":{"name":"Structural Design of Tall and Special Buildings","volume":" ","pages":""},"PeriodicalIF":2.4,"publicationDate":"2022-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49022093","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Efficiency of the slime mold algorithm for damage detection of large‐scale structures","authors":"Parsa Ghannadi, S. S. Kourehli","doi":"10.1002/tal.1967","DOIUrl":"https://doi.org/10.1002/tal.1967","url":null,"abstract":"Optimization‐based methods are increasingly being implemented for structural damage detection problems through the minimization of the objective functions based on vibration data. The adopted optimization algorithm and objective function play an important role in the accurate detection and quantification of damages. Meanwhile, the challenge of long computational time is another aspect of structural damage identification problems, especially upon addressing large‐scale structures. In this paper, recently developed optimization techniques called slime mold algorithm (SMA) and marine predators algorithm (MPA) are applied to damage assessment of large‐scale structures for the first time. The performance of these algorithms is compared with those obtained using other well‐known optimization techniques such as ant lion optimizer (ALO), whale optimization algorithm (WOA), and grasshopper optimization algorithm (GOA). Furthermore, the sensitivity of three objective functions based on modal assurance criterion (MAC), modified total modal assurance criterion (MTMAC), and natural frequency vector assurance criterion (NFVAC) are examined. Two numerical studies, including the 53‐bar planar truss and the Guangzhou New TV tower, and a full‐scale three‐story frame as an experimental investigation are conducted to present a statistical comparison. The overall results show that the combination of SMA and objective function based on MTMAC provides an accurate tool for damage identification. However, improved SMA (ISMA) has been introduced to enhance the capability of standard SMA for damage detection, and especially finite element model updating in the experimental example. Five benchmark functions are also used to evaluate the global optimization capacity of ISMA and SMA. The results show that the ISMA has many benefits in terms of tackling global optimization problems. MPA‐MTMAC can provide promising results compared with ALO‐MTMAC, WOA‐MTMAC, and GOA‐MTMAC. However, excessive computation time is a big drawback for MPA. The overall results confirm the perfection of the objective function based on MTMAC compared with two others based on MAC and NFVAC.","PeriodicalId":49470,"journal":{"name":"Structural Design of Tall and Special Buildings","volume":" ","pages":""},"PeriodicalIF":2.4,"publicationDate":"2022-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42493704","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Parametric analysis on seismic performance of reinforced concrete frame‐shear wall structures with different setback configurations","authors":"Youlu Huang, Liusheng He, Weiyuan Huang","doi":"10.1002/tal.1970","DOIUrl":"https://doi.org/10.1002/tal.1970","url":null,"abstract":"High‐rise buildings with vertical setbacks are more prone to damage in the event of strong earthquakes. This paper presents an extensive parametric study on the seismic performance of reinforced concrete (RC) frame‐shear wall structures with different setback configurations. Five groups of RC frame‐shear structures with 30 setback configurations were designed. Before conducting extensive non‐linear time history structural analysis, modeling of main lateral force resisting systems including RC column and shear wall was validated using previous test results. By parametric analysis on both horizontal setback ratio and vertical setback ratio, the influences of setback on structural seismic performance in terms of dynamic property, inter‐story drift ratio, acceleration, energy dissipation, and damage condition were comparatively investigated. The overall conclusion is that setbacks caused more than 50% reduction of floor area or positioned at the middle and lower height should be avoided.","PeriodicalId":49470,"journal":{"name":"Structural Design of Tall and Special Buildings","volume":" ","pages":""},"PeriodicalIF":2.4,"publicationDate":"2022-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49526583","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hydrodynamic characteristics and application of tuned liquid dampers with internal damping devices","authors":"Lanfang Zhang, Lele Zhang, Zhuangning Xie","doi":"10.1002/tal.1968","DOIUrl":"https://doi.org/10.1002/tal.1968","url":null,"abstract":"The hydrodynamic characteristics of rectangular tanks with internal damping devices, including baffles and paddles, are investigated using shaking table tests excited by colored noise. The complex second‐order blind identification method is employed to decouple fluid sloshing responses and to obtain mode shapes. The modal frequency and damping ratio are also identified by the modified Bayesian spectral density approach. The influence of baffle angle, paddle width, liquid depth, and excitation amplitude on the natural frequency and damping ratio of tuned liquid dampers (TLDs) is analyzed. Results show that the natural frequency is reduced due to the added mass produced by the damping devices, and the reduction increases gradually with the increase in the size of the damping devices, indicating that the influence of the added mass should be considered in the design. This result is essentially different from the conclusion of the existing finding that the modal frequency of TLD increases continuously with the increase in the baffle angle. Therefore, the tuning of TLD cannot be realized by rotating the baffles. Moreover, the damping ratio of TLD with paddles shows a nonlinear relationship with the fluid response. The nonlinear empirical model fitted by the test results can predict the damping ratio with high accuracy and can be used in the preliminary design of TLD for the wind‐induced vibration control of super‐tall buildings.","PeriodicalId":49470,"journal":{"name":"Structural Design of Tall and Special Buildings","volume":" ","pages":""},"PeriodicalIF":2.4,"publicationDate":"2022-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43102700","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Seismic loss optimum design of steel structures using learning‐based charged system search","authors":"Pouya Motamedi, M. Banazadeh, S. Talatahari","doi":"10.1002/tal.1945","DOIUrl":"https://doi.org/10.1002/tal.1945","url":null,"abstract":"One of the structural engineers' challenges on a regular basis is balancing the expense of initial construction with the cost of future structural loss. At first appearance, employing the optimization method seems to be a viable option. However, since both the structure's analysis and design, as well as the computation of the cost of future loss, are time‐consuming and expensive, combining these processes with the costly optimization progression is prohibitively expensive. The purpose of this study is to present a methodology for the risk‐based optimum design of steel frame structures, as well as to enhance a previously published metaheuristic algorithm for a better optimization approach. The methodology given here allows structural designers to account for seismic risks in the design optimization process without incurring expensive computing expenditures. This approach may be appealing for practical work since it minimizes time‐consuming charges and provides designers with a structural impression. Furthermore, as compared to the standard version, the new optimization algorithm improves performance while decreasing computing costs. Bayesian linear regression is used in conjunction with a parameter identification challenge to derive probabilistic models for estimating structural analysis demand responses. The minimum amount of total initial cost and seismic loss cost is regarded as the objective function of the design of three chosen mid‐ to high‐rise moment frames for the optimization purpose. The results demonstrated enhanced optimization performance as well as a decreased loss cost for employed structures.","PeriodicalId":49470,"journal":{"name":"Structural Design of Tall and Special Buildings","volume":" ","pages":""},"PeriodicalIF":2.4,"publicationDate":"2022-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44865793","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}