Construction process for special-shaped concrete tower column of asymmetric cable-stayed bridge

Abstract

The invention discloses a construction process for a special-shaped concrete tower column of an asymmetric cable-stayed bridge, the construction process comprises the following steps: step 1, tower base construction: a main tower base is in the form of a prismatic table which is inwards inclined by 45 degrees, a support template pouring concrete construction process is adopted for construction, and a customized steel template with the thickness of 8mm is adopted as a tower base template; the construction process has the beneficial effects that the processes of pouring, climbing, curing and the like in each construction stage of the special-shaped concrete tower column of the asymmetric cable-stayed bridge are strictly controlled before and after construction, so that the construction precision of the special-shaped concrete tower column of the asymmetric cable-stayed bridge is improved; the bending moment phenomenon caused by overlarge self weight or construction load capacity of the tower bridge is effectively avoided, the tower column root is prevented from being fractured due to large tension, meanwhile, the stability of the main tower can further avoid the phenomenon that the design value of the finished bridge root exceeds the standard due to the fact that the side pressure stress exceeds the standard, and the construction efficiency and quality of the special-shaped concrete tower column of the asymmetric cable-stayed bridge are greatly improved and ensured.

Description

technical field [0001] The invention relates to the technical field of construction of special-shaped concrete tower columns of asymmetrical cable-stayed bridges, in particular to a construction technology of special-shaped concrete tower columns of asymmetrical cable-stayed bridges. Background technique [0002] In the bridge construction process, in order to ensure the smooth progress of the bridge construction process, it is often necessary to construct the special-shaped concrete tower columns of the asymmetrical cable-stayed bridge in advance. [0003] However, in the construction process of the special-shaped concrete tower columns of the current asymmetric cable-stayed bridge, due to the insufficient construction technology, the construction quality of the special-shaped concrete tower columns of the asymmetric cable-stayed bridge is poor, and it is easy to be caused by the weight of the tower bridge itself or the excessive construction load. At the same time, it is e...

AI Technical Summary

Problems solved by technology

[0003] However, in the construction process of the special-shaped concrete tower columns of the current asymmetric cable-stayed bridge, due to the insufficient construction technology, the construction quality of the special-shaped concrete tower columns of the asymmetric cable-stayed bridge is poor, and it is easy to be caused by the weight of the tower bridge itself or the excessive construction load. At the same time, it is easy to break due to the large tensile force at the root of the tower column. At the same time, it is also easy to cause the root of the bridge to exceed the standard due to lateral compressive stress due to the instability of the main tower after erection. The phenomenon that the design value exceeds the standard greatly reduces the construction efficiency and quality of the special-shaped concrete tower column of the asymmetrical cable-stayed bridge