Method and apparatus for pouring concrete into steel pipe of steel pipe concrete arch ring
A technology of concrete-filled steel pipe arches and concrete-filled steel pipes, which is applied in the direction of arch bridges, bridge forms, bridges, etc., can solve the problems of poor continuity and integrity of the concrete in the pipe, small gaps in the diaphragm, and non-continuous construction, so as to meet the requirements of continuous pouring The effect of construction, good integrity and simple equipment
Inactive Publication Date: 2008-10-15
SICHUAN DEPT OF TRANSPORTATION HIGHWAY PLANNING PROSPECTING & DESIGN RES INST
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Problems solved by technology
However, this method has the following disadvantages: the concrete pouring in the next warehouse can only be performed after the concrete strength in one warehouse reaches 70%, and continuous construction cannot be carried out, so the construction period is longer; at the diaphragm, the concrete in the pipe is separated, and in addition Concrete shrinkage, small gaps may appear on both sides of the diaphragm
Therefore, the continuity and integrity of the concrete in the pipe poured by this method are poor
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[0026] Embodiment--Injection construction of the main arch circle of Wushan Yangtze River Bridge. Wushan Yangtze River Bridge, also known as Wuxia Yangtze River Bridge, is a steel pipe mid-support arch bridge. The bridge has a total length of 612.2 meters, a net width of the bridge deck of 19 meters, two-way 4-lane, and a main span of 492 meters, ranking first in the world for similar bridges. The vector of the main arch circle of the bridge is as high as 121 meters, and the concrete that needs to be poured in the main chord pipe of one arch rib reaches more than 600 cubic meters. The traditional concrete pouring method cannot meet the construction needs of this bridge. The applicant successfully applied the present invention The concrete pouring method and pouring device in the steel pipe of the concrete-filled steel tube arch ring are applied in the construction of the bridge. Referring to Fig. 1 and Fig. 2, the left half-span steel pipe 10a and the right half-span steel pi...
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The invention relates to a steel tube concrete arc ring steel tube inner concrete filling method and relative filling device, which can meet the demand of continuous operation of big-diameter main string tube, and reducing the construction time. The filling method comprises: a, dividing filling sections that dividing at least two sections with certain height difference at the left and right semi steel tubes of main string tube; b, arranging filling device on the initial points of each filling section; c, filling concrete from the arc foot to the top. With said invention, the filled concrete has better continuous property, high reliability, and better safety and reduced construction period.
Description
technical field [0001] The invention relates to a construction method and concrete pouring equipment for a concrete-filled steel tube concrete arch bridge, in particular to a concrete pouring method and a pouring device in a steel tube for a concrete-filled steel pipe arch ring. Background technique [0002] Concrete filled steel pipe is a composite material formed by filling concrete in steel pipes. The steel pipe is filled with concrete to improve the stability, corrosion resistance and durability of the steel pipe wall under pressure. With the help of the hoop effect of the steel tube wall, the concrete improves the compressive strength and ductility of the concrete, and combines the steel and the concrete organically; in terms of construction, the hollow steel tube can be used as the rigid skeleton and formwork for the steel tube concrete, and the construction and hoisting weight is light , the progress is fast, and the amount of steel used for construction is low. Due...
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IPC IPC(8): E04G21/02E01D4/00
Inventor 郑远鹄郑旭峰牟廷敏张琪朱学雷陈应忠
Owner SICHUAN DEPT OF TRANSPORTATION HIGHWAY PLANNING PROSPECTING & DESIGN RES INST