Study On Isolation Structure Of Around Tensile Anchor Plate And The Waterproof Material On Composite Cable-stayed Bridge

Recent years, composite cable-stayed bridges have been rapidly developed in China. Tensile anchor plate is one of the beam anchoring ways of composite cable-stayed bridges, it has some advantages, such as simple structure, clear power transmission path and anchor of the stress state, conveniently construction,cable maintenance and replacement easily. Tensile anchor plate is the key of the whole composite cable-stayed bridge, and the durability of it is very important to the bridge.A variety of waterproofing system used in Cable-stayed bridge is basically reasonable, but often lack the detailed description of the operation, so often causing waterproof failure. To completely solve deck waterproof issue must pay attention to the following three aspects of structural problems:â‘ the continuity of drainage system;â‘¡the sealing ability of connecting edge;â‘¢The closed adhesion between the waterproof layer and the lower layer;No matter which aspect above problems may lead to the infiltration of rainwater. Especially the waterproof problem that the anchor plate of cable-stayed bridge is out of the deck has been easy to be ignored and difficult to solve the problem.So far, the world has not yet on the flexible waterproof material data of the tensile anchor plate extending bridge deck pavement. In order to prevent the tensile anchor plate Anchorage of Cable Beam structure extending deck at the long-term anti-leakage problem, and provide reliable design information for the designer and management staff.Based on the tensile anchor plates of Jiangjin Guanyinyan Changjiang bridge, the study on isolation structure of around tensile anchor plate and the waterproof material on composite cable-stayed bridge has been carried out. The main job to do is as the following:â‘ a single waterproof method of "blocking is given priority to" in the previous bridge waterproofing has been changed, the "ladder target" waterproof ideas has been put forward.â‘¡According to the construction of the tensile anchor plates of Jiangjin Guanyinyan Changjiang bridge,"rigid segregation","flexible isolation","Flexible rigid combined isolation" three kinds of waterproof isolation structure and the corresponding waterproof materials have been proposed. â‘¢The construction method of waterproof isolation structure has been put forward.â‘£At present the bridge waterproof in good condition, according to the design and construction suggestions of the tensile anchor plate waterproof.