Highway frame type bridge abutment and construction method

Abstract

The invention discloses a highway frame type bridge abutment and construction method. The highway frame type bridge abutment comprises an abutment body used for transmitting a main beam and loads on an upper portion of the main beam to a foundation, wherein the bottom of the abutment body is connected with a bearing platform playing a role in bearing and supporting the abutment body, and the bottom of the bearing platform is connected with a pile foundation extending to the underground and used for improving stability of the bearing platform; the abutment body comprises a front abutment body which is arranged on the top of one side of the main beam and connected with an abutment cap and a back abutment body which is far away from one side of the main beam, the tops of the abutment cap and the back abutment body are connected with a rigid frame beam, ear walls are symmetrically arranged on one side, far away from the main beam, of the rigid frame beam, and a supporting beam is connected between the bearing platforms. The bridge abutment can effectively solve an arrangement problem of the bridge abutment when the expressway crosses the road with poorer geology and the municipal road, can shorten the length of the bridge, saves the manufacturing cost, and can avoid the appearance of high and large cones.

Description

technical field [0001] The invention relates to the technical field of civil engineering, in particular to a highway frame abutment and a construction method. Background technique [0002] With the rapid development of my country's economic construction, the construction of expressways is also developing rapidly. It is inevitable that there will be intersections with highways, municipal roads, and railways. In order to meet the connection between the front and rear sections and save costs, most bridges are built with one-hole spanning. Way. Among them, the abutment is the main load-bearing structure of the bridge, and the design and construction of the abutment has always been a crucial part of road construction. [0003] The main feature of the gravity abutment is that it relies on its own weight to balance the external force to maintain its stability. Therefore, the abutment body is relatively thick and requires a large amount of masonry. The front wall of the gravity abut...

AI Technical Summary

Problems solved by technology

The disadvantage of the pile foundation of the buried abutment (also known as column abutment or ribbed abutment) is that slope protection needs to be set in front of the abutment. Since the slope protection extends into the bridge hole and encroaches on the clear width of the road, it is necessary to increase the bridge length appropriately, thereby Increased project cost

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