Large-sized bridge cushion cap structure and construction method

• Main Authors: LI MAN, CHEN BIN, QIN XIAOFENG, DONG MANSHENG, ZANG JUN, TAN XIAOFENG, XU HAIJIANG, DONG HANJUN
• Format: Patent
• Language: English
• Published: 15.07.2015
• Subjects: ASSEMBLY OF BRIDGES; CONSTRUCTION OF BRIDGES; CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES; EMBANKMENTS; EXCAVATIONS; FIXED CONSTRUCTIONS; FOUNDATIONS; HYDRAULIC ENGINEERING; OR VIADUCTS; SOIL SHIFTING; UNDERGROUND OR UNDERWATER STRUCTURES

The invention provides a large-sized bridge cushion cap structure. The large-sized bridge cushion cap structure comprises a bottoming concrete structure, a cushion cap main body concrete structure connected with the bottoming concrete structure, and a transition layer structure arranged between the bottoming concrete structure and the cushion cap main body concrete structure, wherein the transition layer structure is a steel-concrete combined structure; the transition layer structure comprises steel casings of pile foundations, section steel and reinforcing meshes; the steel casings are connected by welding through the section steel; the reinforcing meshes are paved on the section steel, and are welded together with the section steel; the reinforcing meshes are welded with the contacts of the steel casings. The invention further provides a construction method of the transition layer structure and the section steel. The transition layer structure is arranged to achieve support force apart from bottoming intensity on the premise of not changing the size of a cushion cap, so that the problem of insufficient bonding strength between bottoming concrete and the pile foundations during one-step pouring of concrete onto a large-sized cushion cap is solved, and the construction period is greatly shortened.