Theoretical Simulated And Experimental Research On Resistant Lateral Stiffness Of Container Structure

At present, as a light steel structure, containers are increasingly been used for building structures, and it has many advantages and applications in building structures. Firstly, container steel can be recycled, thereby reducing the environmental pollution and energy consumption; secondly, containers can be standardized producted in the factory, and overall decorated of interior and exterior, and modular implemented in the transport and construction, thereby saving the design and construction period; thirdly, containers can be assembled into a variety of space forms, thereby meeting the requirements of architectural design; fourthly, containers can be used for a variety of architectural purposes, thereby enhancing the national strategic reserve of steel. Besides, containers can be used not only for the general residential buildings, but also for the earthquake relief, remote mountain areas, construction sites, ports, industrial and mining enterprises and other temporary buildings, or for the small shops, student dormitories, simple public facilities and other economical buildings, or for the data terminals, concrete mixing stations, mobile detection and test vehicles, mobile heating devices through the installation of special equipments etc..However, at present, the researches of container buildings in domestic and abroad are more concentrated in the architectural design aspect, and lack the corresponding analysis of structural mechanics performance and guidance of design and construction aspect. Only a few of the literatures are also built on the basis of experiences, or just a certain aspect research work of theoretical analysis and experimental study is be done. In addition, the container buildings are difficult to design according to the existing and current codes for steel structures, which has seriously hindered the application and development of the container buildings.In view of this, this paper makes an in--depth comparative analysis mainly from the aspects of mechanical theoretical analysis, nonlinear numerical simulation and full--scale experimental verification etc. of the integral, non--stiffening opening, and stiffening opening container structures, and achieves corresponding achievements.In the aspect of mechanical theoretical analysis of container buildings. Firstly, based on the diaphragm theory, the deformation of the corrugated sheet is analyzed, and then the energy of the corrugated sheet is analyzed, the corrugated sheet stiffness which parallel to the corrugated direction as both ends of corrugated sheet with continuous connection is derived. Based on the energy theory, two shear modulus which parallel and vertical to the corrugated direction is analyzed, and then the stiffness conversion which parallel and vertical to the corrugated direction is analyzed, the corrugated sheet stiffness which vertical to the corrugated direction is derived. Based on the relevant researches of the domestic and abroad, the calculation methods of the container stiffness are defined. And then, based on the stiffness distribution between the corrugated sheet and the frame of the container side wall, the calculation methods of the integral container stiffness of the loading and non--loading end are derived as the bottom side beams fixed. And then, based on the deformation of the bottom frame of the container and the situation of the integral container as the bottom side beams fixed, the calculation methods of the integral container stiffness of the loading and non--loading end are derived as the bottom side beams non--fixed. Secondly, based on the diaphragm theory and the situation of both ends of corrugated sheet with continuous connection, the corrugated sheet stiffness as both ends with continuous connection and freedom respectively is derived. Based on the division principle of flexible bands and stiffness bands, the calculation methods of stiffness of common non-stiffening hole, such as window hole, door hole, combined window hole, are derived. Based on the calculation methods of stiffness of common non--stiffening hole, and the stiffness distribution between the corrugated sheet and the frame of the container side wall, the stiffness calculation methods of non-stiffening container with holes are derived. Thirdly, based on the calculation methods of stiffness of common non--stiffening hole, the calculation methods of stiffness of common stiffening hole, such as window hole, door hole, combined window hole, are derived. Based on the stiffness calculation methods of non--stiffening container with holes, the stiffness calculation methods of stiffening container with holes are derived.In the aspect of nonlinear numerical simulation of container buildings. Firstly, based on the full--scale nonlinear finite element model of the container established by the Abaqus, the corresponding stress--deformation contour and loading--displacement curve of the integral group, non-stiffening opening group, and stiffening opening group are obtained, and then compared with theoretical analysis. Secondly, based on the parametric analysis of the corrugated sheet size, cross--section, open hole, and the every envelope structures, and the form of stiffening member, the influence laws of container stiffness on each parameters are obtained. Thirdly, based on the results of parametric analysis, the design and construction suggestions of the container buildings are summarized.In the aspect of full--scale experimental verification of container buildings. Firstly, the material properties experiment of the container steel--Corten Steel is carried out, the experimental datas of the main components of the container are obtained. Secondly, the full--scale mechanical experiments of the integral, non-stiffening opening, and stiffening opening container group are carried out, the corresponding loading--displacement curve and loading-stress curve are obtained, and the stiffness values of each experimental items are obtained, and the influence laws of the integral container stiffness of integral container group as different constraint conditions are obtained, and the influence laws of the opening container stiffness of opening container group as different hole area and stiffening members are obtained, and the bearing capacities and destruct positions of 20OR--1D2 W and 40OR--5W are obtained. Thirdly, the loading-displacement curve and loading-stress curve of each experimental items are used to compare with the theoretical analysis and numerical simulation respectively, and the correctness of previous researches are verified.The research of this dissertation can provide corresponding references for the design and construction of the widely used container buildings today, and can provide theoretical references for the corresponding codes preparation.