Abstract:This paper firstly introduces the achievements of membrane structure in recent years with the examples of exhibition building, sports building and cultural and communication building, and discusses some problems of current membrane structure, i.e. indeterminate shapes and their determination, from tents to permanent buildings and the support of membrane - air, cords or skeleton. Finally, some views on the future development of membrane structures are presented.

Abstract:This paper introduces the design and calculation process of membrane structure dome of Happy Valley Center Theater, including the shape analysis, load analysis and shear analysis of the tensioned membrane structure; the structural measures of the key nodes, the construction and installation process and the method of prestressing. It can provide some data for similar projects in the future.

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Abstract:The main stadium canopy of Zhejiang Huanglong Sports Center adopts diagonal net shell structure, its structural system consists of tower, inner and outer ring beam, diagonal cable, net shell, stabilizing cables, etc. When designing the canopy, it is combined with the substructure to carry out the overall stress analysis. When designing, under the premise of meeting the requirements of structural stress performance, the arrangement of structural components is determined, taking into account the convenience of construction. The prestressing control force of the inclined cable and stabilizing cable is calculated according to the actual progress sequence of the site, and good results have been achieved.

Abstract:The cantilever roof of the main stadium of Yellow Dragon Sports Center in Zhejiang Province is a cable-stayed reticulated shell structure, which is composed of reticulated shell, inner and outer ring beams, stay cables, and stability cables. Both sides of the reticulated shell are respectively supported on the outer ring beam (prestressed concrete beam) and the inner ring beam (steel box beam), and the inner ring beam is suspended on the prestressed concrete suspension tower at both ends through the stay cables, thus forming a complex spatial structure composed of suspension towers, stay cables, inner ring beams, outer ring beams, reticulated shells, and stability cables. According to the design intent of the structure, the lattice shell and ring beam are installed from both ends (hanging tower edge) to the middle, and the temperature should be controlled when closing in the middle; During the installation process, the grid shell cannot be connected to the inner ring beam, making the installation of the grid shell more difficult. This article discusses the installation process and method of the lattice shell cantilever structure, and provides a detailed introduction on how to control the temperature when the roof structure is closed, and how to ensure the synchronous construction of the lattice shell and the inner ring beam without mutual influence

Abstract:This paper introduces the research, design and engineering application of three types of prestressed localized single-layer mesh shell structures. Through engineering practice, their structural and mechanical characteristics and their good technical and economic indexes are discussed.

Abstract:This paper introduces a large-span conical bolt ball node mesh frame structure, using strand prestressing and special sliding support measures, to solve the problem of large internal force of mesh frame members and release the horizontal thrust of the support, and significantly reduce the steel content of the structure. This paper describes the design and construction process in detail.

Abstract:In recent years, modern prestressing technology has been more and more widely used in space grid structure. By applying prestressing in spatial grid structure, it can greatly improve the stiffness of the structure, save steel and reduce the total cost of the project; at the same time, it can enable architects to give full play to their imagination and design more beautiful structural modeling, so it has good social and economic benefits. As a new achievement of architectural discipline, the development prospect of this new structural form is broad, but there are many contents that need to be explored in-depth theory.

Abstract:This paper summarizes the successful experience and failure lessons in the development process of large-span prestressed folded plate structure in China for more than twenty years, and discusses some important issues that should be paid attention to in the design of this kind of structure, such as the torsional loss of plate, the influence of wing plate width-thickness ratio on the plate's load carrying capacity, the reasons for the formation of folded plate longitudinal cracks, as well as the effect of the pre-stressed stress, etc., and puts forward the improvement of the design methods in principle, the production and the construction of the problems that should be paid attention to.

Abstract:The calculation method of torus structure is very different from other structures, i.e., there are geometric nonlinearities and state nonlinearities, which are highly nonlinear problems. It is a highly nonlinear problem, which has its own characteristics in calculation. In this paper, the characteristics of state nonlinear calculation, the method of parameterization, and the time-domain analysis method of random wind load are introduced in detail.

Abstract:In a Soto structure, the cables run through the structure via pulleys to carry the loads, rather than being fixed to the structure. The relative sliding between the ropes and pulleys transmits the internal forces, so the contact between the ropes and pulleys is the key and difficult point of the structure. The contact problem belongs to the boundary condition nonlinearity, not only has a high degree of nonlinearity, but also the specific calculation is very complex. In this paper, we discuss in detail how to use ANSYS software to deal with the contact problem of Soto structure for several types of contact.