Research on the mechanic analysis method of prestress construction process of large-span suspendome

2012 ◽  
pp. 283-288
Author(s):  
Yongquan Wang ◽  
Zhengxing Guo ◽  
Bin Luo
Keyword(s):  
Construction Process ◽  
Analysis Method ◽  
Mechanic Analysis ◽  
Large Span

Design and Analysis of a Suspended Lattice Shell

2012 ◽  
Vol 238 ◽  
pp. 599-602
Author(s):  
Wen Feng Du ◽  
Fu Dong Yu ◽  
Zhi Yong Zhou ◽  
Li Ming Zhu
Keyword(s):  
Tensile Force ◽  
Zhejiang Province ◽  
Construction Process ◽  
Analysis Method ◽  
Key Technology ◽  
Large Span ◽  
Construction Scheme ◽  
Lattice Shell

The design and analysis of the suspended lattice shell located in Zhejiang province of China is introduced, and some key problems are discussed in this paper. Especially, tensile cable is a key element in large span suspended structures. And the construction of tensile cable is the key technology problem as the tensile force of tensile cable is very sensitive to the construction precision. The tension slacken analysis method is used to obtain the control stress and complete the work with only one time tensile construction. Results of the engineering show that the construction process is simple and the construction scheme is economic.

Behavior and Construction of Stay Cables in Shiyan Stadium

2014 ◽  
Vol 577 ◽  
pp. 1093-1096
Author(s):  
Li Ming Zhu ◽  
Zheng Hao Zhu ◽  
Chao Jie Kang
Keyword(s):  
Tensile Force ◽  
Spatial Structures ◽  
Construction Process ◽  
Analysis Method ◽  
Stay Cable ◽  
Key Technology ◽  
Large Span ◽  
Stay Cables ◽  
Construction Scheme ◽  
Practical Project

The construction of stay cable is the key technology problem in large span spatial structures. This paper carried out a study on the construction scheme of stay cables based on the practical project of Shiyan stadium roof. The loss of tensile force caused by the seven steel wring with different construction order is summarized according to the experimental construction, and the tensile force slacken analysis method was used to calculate the stress of construction. Moreover, the loss of tensile force caused by anchor and relaxation is considered too. Then, the control tensile force of construction, which is used to realize the tensile construction one time, is obtained. Results of the engineering test show that the construction process is simplified and he construction scheme is economic under the condition of allowed precision. The method can provide reference for similar projects.

Construction Monitoring Technology Research on Large-Span V Structure Tied Arch Bridge

2013 ◽  
Vol 351-352 ◽  
pp. 1240-1243 ◽  
Author(s):  
Ting Yin ◽  
Wei Zhang ◽  
Yan Bo Zhao ◽  
Xiao Long Sun
Keyword(s):  
Actual State ◽  
Construction Process ◽  
Bridge Construction ◽  
Monitoring Point ◽  
Monitoring Technology ◽  
Construction Monitoring ◽  
Arch Bridge ◽  
Large Span ◽  
Long Span ◽  
Tied Arch Bridge

Large-span V structure tied arch bridge structure system is complex. In order to make the actual state of the bridge into the ideal state of maximum close to the design, we must make real-time monitoring in the key parts of the structure, and adjust to the design of the data by analysis calculated, to ensure the safety and reliability of arch bridge in the course of construction and into stress after the completed bridge. Combined with the construction monitoring of the main Xinglong Bridge on Si River, this paper introduces the main bridge construction process measurement a preliminary study on the large span V configuration basket tied arch bridge construction monitoring technology. Based on the construction monitoring of Xinglong Bridge on Si River, this paper introduces the main contents and methods of monitoring point location, monitoring control of construction process, and discussed the construction monitoring technology of long-span X-style tied arch bridge V structure.

Discussion on the Measurements in Cantilever Construction with Guyed Hanging Basket

2014 ◽  
Vol 580-583 ◽  
pp. 2797-2800
Author(s):  
Fang Ru Gui
Keyword(s):  
Reinforced Concrete ◽  
Construction Process ◽  
Large Span ◽  
Cable Stayed Bridge ◽  
Beam Segment ◽  
Development Direction ◽  
Operating Space ◽  
Cantilever Construction

Guyed hanging basket is qualified with reasonable structure , great carrying ability and clear construction process, and also can provide a good operating space for beam segment construction. Applying cantilever pouring construction with guyed hanging basket should be the development direction of the construction of large-span reinforced concrete cable-stayed bridge. By taking the girder construction of the grand bridge over Beijing-Hangzhou Canal as an example, this paper introduces the measurements in cantilever construction with guyed hanging basket, aiming at providing reference for other similar projects.

The Closure Scheme Optimization Analysis of Multiple Large-Span Prestressed Continuous Beam Bridges

2012 ◽  
Vol 178-181 ◽  
pp. 2240-2245
Author(s):  
Jian Ming Hao ◽  
Kai Fa Zhou
Keyword(s):  
Internal Force ◽  
Continuous Beam ◽  
Analysis Method ◽  
Optimization Analysis ◽  
Large Span ◽  
Scheme Optimization ◽  
Closure Scheme ◽  
Scheme Analysis ◽  
Wei River

It is critical to choose a reasonable closure scheme for the construction or post- construction state of multiple large-span prestressed continuous beam bridges. The feasible closure schemes were analyzed and evaluated. The optimum closure scheme analysis method was proposed. Take Wei river bridge for instance, by deformation, internal force and stress comparison, and construction roubustness analysis, the optimum closure scheme is set down to ensure the girder close smoothly with reasonable internal force.

Construction Technology Analysis of Space Heterotypic Steel Frame of Concert Hall in Changsha

2011 ◽  
Vol 94-96 ◽  
pp. 416-420
Author(s):  
Wei Jun Yang ◽  
Yao Li ◽  
Fu Zhong Chen
Keyword(s):  
Energy Analysis ◽  
Steel Frames ◽  
Construction Technology ◽  
Construction Process ◽  
Analysis Method ◽  
Element Analysis ◽  
Lifting Technique ◽  
Welding Technology ◽  
Positioning Method ◽  
3D Positioning

Many heterotypic steel frames with special-shaped are used in the concert of Changsha. It causes difficulties to the construction technology. Based on the characteristic, It is studied the construction process, then put forward the subsection lifting technique, applied energy analysis method for lifting point and used finite element analysis for supporting system. At the same time, it is used measuring robot 3d positioning method and elaborated the operation points, At last, it is analyzed the welding technology. All of these provide guarantee to the smooth construction.

Simulation Study on Construction Process of Complex Spatial Steel Structure Based on the Construction Mechanics

2012 ◽  
Vol 226-228 ◽  
pp. 1209-1213
Author(s):  
Wei Lin Zhang ◽  
Zhi Xin Wu ◽  
Bai Hui Chen
Keyword(s):  
Finite Element ◽  
Steel Structure ◽  
Frame Structure ◽  
Construction Process ◽  
Element Analysis ◽  
Large Span ◽  
Critical Control Points ◽  
Construction Step ◽  
Construction Mechanics ◽  
Construction Condition

The construction process of the large span spatial steel structure was studied by finite element method and the time-varying mechanics. The construction process of complex spatial frame structure was divided into the installation and dismount supporting phase, and each stage was divided into 15 steps in which mainly simulated and analyzed the whole construction process by "life-death" element. The critical control points of each construction step were identified, the stress state, interval value and the maximum stress in the structure of each construction condition were conformed; rod deformation in construction process was analyzed in construction program. The result showed that the large span spatial steel structure construction scheme was numerical simulated and calculated by the method of finite element analysis and the mechanical state, deformation and safety of building structure were predicted accurately during construction.

Numerical Modeling and Optimizing Construction Schemes for Transition Section Complex Structure of Large Scale Underground Railway Station and Tunnel

2012 ◽  
Vol 256-259 ◽  
pp. 1177-1180
Author(s):  
Rui Lang Cao ◽  
Shao Hui He ◽  
De Lian Gao
Keyword(s):  
Cross Section ◽  
Large Scale ◽  
Variable Cross Section ◽  
Variable Cross ◽  
Construction Process ◽  
Large Span ◽  
Transition Section ◽  
Cell Method ◽  
Tunnel Transition ◽  
Underground Station

Based on the engineering background of New Beijing-Zhangjiakou Inter-city railway Badaling underground station and tunnel transition section construction, the problem of tri-arch and large-span variable single arch construction schemes in the transition section launched research. This paper draws some basis and the law as reference in construction process by the simulate calculation of ABAQUS finite element analysis software. This thesis discuss the frequently-used methods(middle cell method, one-side wall drift heading method, CRD-4 holes method and CRD-6 holes method) that is used in large-scale variable cross-section tunnel engineering research and analysis the stress, deformation and plastic areas distribution of surrounding rock by the simulate calculation of construction process. By comparative analysis, confirm the best construction scheme of transition section: the middle cell method applies to tri-arch cross-section and the CRD-4 holes method applies to large-span single arch of variable cross-section. It can offer direct guidance to the Badaling underground station and tunnel transition section project and some reference to similar underground projects.

Research on Measure-Control Technology of Large-Span Suspendome during Construction Period

2011 ◽  
Vol 105-107 ◽  
pp. 2010-2014
Author(s):  
Yong Quan Wang ◽  
Zheng Xing Guo ◽  
Bin Luo
Keyword(s):  
Steel Structure ◽  
Internal Force ◽  
Test Methods ◽  
Engineering Practice ◽  
Control Methods ◽  
Construction Process ◽  
Construction Period ◽  
Large Span ◽  
Axial Forces ◽  
Construction Mechanics

In order to ensure the prestress establishment of large-span suspendome, research on the measure-control methods for large-span suspendome during prestress construction process is performed, by summarizing the existing measure and test methods. According to engineering practice at present, the paper classifies the measure-control content of large-span suspendome during prestress construction period into two parts: internal force of cable-strut and deformation of steel structure. Taking practical project of a gymnasium as an example, the axial forces of hoop cables, radial steel tie rods and struts are measured, and also the verticality of struts. The test results are analyzed, and compared with the calculated value. The results show that, the internal forces of cable-strut and verticality of struts can both meet the design requirement, by mechanical analyzing and precise monitoring of the whole prestress construction process. The conclusion is that, before the prestress construction of large-span suspendome, construction mechanics analysis must be carried out in details to determine the control content and its target value, right measure-control methods are chosen, and then the effective establishment of prestress can be achieved.

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