Research On Designed And Constructional Key Problems Of Reaction Wall In Structure Laboratory

According to a prestress reaction wall under construction in a new structural laboratory of Civil Engineering and Architecture College of Guangxi University, Using finite element analysis software ANSYS, to studies some key problems of the reacting force wall encountered in the design and construction process.First,the article simulate the failure process by using ANSYS 11.0 finite element analysis software to conduct numerical simulation of reaction wall. Determine the reaction wall crack first appeared in the connection of two loading the stiffening plate of metope, the position such as coupling beam. Contrast analysis of two kinds of node counterforce wall reinforcement scheme, unde* various operating conditions on the characteristics of force and deformation, and verify the components of joint reaction force wall by the edge component way to decorate the rationality of the reinforcement.Then, prestressed and non-prestressed wall between vertical stiffeners plus when prestressed if possible cracking problem.by using ANSYS 11.0 finite element analysis software to conduct numerical simulation of reaction wall. According to the results of the stress and fracture analysis shows, Tension does not make prestressed and non-prestressed vertical wall stiffener cracks at the junction when the tendons,reaches out a conclusion that post-tensioning tendons have impact on pre-tensioning tendons.Finally,Study the effects of partial tensioning tendons for prestressed compression loss order.the article design five pre-stress tension program by analysing uniformity of tensile stress tendonsand deformation and stress distribution of reaction wall and considering actual construction and structural stability of tensioning tendons. In the end, this article calculuses the best tension program that is pre-stress steel in A, B side of every reaction wall should tension at the same order and location.