Building method for mound-free suspension bridge

Abstract

The invention relates to a building method for a mound-free suspension bridge, which builds a running lane beam, cables and balloons hanging and lifts running lane beam according to load. During balloon hanging, the size, the number and arrangement positions of the balloons are determined according to bridge type load, an upper end of the running lane beam is connected with balloons through a vertical cable, a lower end of the running lane beam is connected with an anchorage pile anchored to the ground through a locating cable, and adjacent two transverse balloons are connected through the locating cable. When each position is checked to be reliable, the balloons are inflated evenly and synchronously. The balloons lift and hang the running lane beam gradually. When the balloons are inflated to reach designed pressure, a bridge surface is integrally lifted to a designed position, and a bridge span structure is formed. The building method bears load through balloons, changes load delivery depending on mounds, platforms or towers on the lower portion of the traditional bridge structure, adopts a method of bearing load through a base and a foundation, is especially suitable for building of bridges under emergency conditions of rescuing and disaster reliving, and can meeting requirements of building of bridges with different bridge width and spans.

Description

[0001] technical field [0002] The invention relates to a suspension bridge, in particular to a construction method of a pier-free suspension bridge. Background technique [0003] According to different structural systems, conventional bridges generally transfer the load of the superstructure to the foundation and foundation through the substructure such as piers and abutments, or bridge towers and anchorages, so as to realize its function of crossing natural or artificial obstacles. It can be seen that no matter what kind of bridge structure is used, the construction of piers, abutments, bridge towers, and foundation structures is very important. The full use of bridge functions and operational safety are closely related to the substructure. However, in some cases of poor geology, low foundation bearing capacity, deep bedrock burial, complex terrain conditions, etc., the construction of the bridge's lower pier or bridge tower may become the control point of the entire brid...

AI Technical Summary

Problems solved by technology

However, in some cases of poor geology, low foundation bearing capacity, deep bedrock burial, complex terrain conditions, etc., the construction of the bridge's lower pier or bridge tower may become the control point of the entire bridge project, especially for some river-crossing, Due to the limitations of natural conditions, geology and terrain conditions, the construction of the substructure of the bridge becomes very complicated and difficult; even if the substructure is technically feasible, it is often due to the cost of the substructure. Too high and had to abandon the bridge construction plan

In addition, in some special situations such as disaster relief, it is necessary to quickly build bridges to rush through lifelines and transport supplies. At this time, if the conventional bridge construction method is followed, it may delay time and even delay the timing of disaster relief.

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