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Girder-pier sequential construction method of pier top segment of auxiliary pier of cable stayed bridge

A construction method, the technology of beams first and piers later, is applied in bridges, bridge construction, erection/assembly of bridges, etc., which can solve the problems of high construction cost, long construction time, and large investment, and achieve compact connection, shorten construction period, and save costs Effect

Active Publication Date: 2016-04-13
THE 5TH ENG MBEC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 1. The construction process is complicated: the front fulcrum stay cable hanging basket cannot pass through the auxiliary pier normally, and when passing the auxiliary pier top section of the main beam subsequent section, it is necessary to reinstall the front fulcrum stay cable hanging basket, and continue the cantilever construction. Segments, or use the bracket construction method for construction;
[0007] 2. Long construction time: the subsequent sections of the main girder on the top of the auxiliary pier need to re-install temporary facilities such as the front fulcrum dragline hanging basket or bracket, and the process conversion takes a long time;
[0008] 3. The construction cost is high: the utilization rate of the front fulcrum cable hanging basket is low, and additional manpower and machinery are required, which requires a large investment

Method used

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  • Girder-pier sequential construction method of pier top segment of auxiliary pier of cable stayed bridge
  • Girder-pier sequential construction method of pier top segment of auxiliary pier of cable stayed bridge
  • Girder-pier sequential construction method of pier top segment of auxiliary pier of cable stayed bridge

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Embodiment Construction

[0031] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0032]The embodiment of the present invention provides a construction method for the top section of the auxiliary pier of a cable-stayed bridge, which is characterized in that: the auxiliary pier body is constructed in two parts, and the pier top is reserved for the first construction of the auxiliary pier body. The height of the front fulcrum stay cable hanging basket 4 can walk through, use the cast-in-place support 5 to complete the construction of the main beam at the top of the auxiliary pier pier, remove the cast-in-place support 5, and the front fulcrum stay cable hanging basket 4 can walk through the auxiliary pier, The second construction assists the pier body 1 to the pier top, and installs the support 8. The main beam of the front and rear sections of the auxiliary pier share a set of front fulcrum stay cable hanging basket 4 for co...

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Abstract

The invention discloses a girder-pier sequential construction method of a pier top segment of an auxiliary pier of a cable stayed bridge, and relates to the field of bridge construction. The girder-pier sequential construction method is characterized in that the construction of the pier body of the auxiliary pier is performed twice, and when the pier body of the auxiliary pier is constructed for the first time, a definite height is reserved at the pier top, so that a front fulcrum pull rope cradle can run through the reserved height, after the construction of a main girder of the pier top segment of the auxiliary pier is completed through a cast-in-situ bracket, the cast-in-situ bracket is dismantled, the cradle runs through the auxiliary pier, and during the construction of the part from the pier body of the auxiliary pier to the pier top for the second time, a pedestal is mounted. According to the girder-pier sequential construction method disclosed by the invention, the front segment main girder and the rear segment main girder of the auxiliary pier share one front fulcrum pull rope cradle for construction, human resources and machinery for the dismantlement and the secondary assembly of the front fulcrum pull rope cradle, or human resources and machinery for construction by a bracket construction method are avoided, operation procedures are simplified, the construction period is shortened, and the cost is reduced.

Description

technical field [0001] The invention relates to the field of bridge construction, in particular to a construction method for the pier top section of an auxiliary pier of a cable-stayed bridge with beam first and then pier. Background technique [0002] The span of the cable-stayed bridge is generally large, often more than 200m, and its main span generally crosses rivers and lakes and other navigable rivers with deep water depth and complicated geological conditions. If the cantilever construction method is not used, but the support construction method, push construction method or swivel construction method is adopted, it will bring greater difficulties to the construction, increase the cost of temporary construction facilities, and even affect the navigation of the river. Cantilever construction methods include cantilever assembly method and cantilever pouring method. Among them, the cantilever assembly method is mainly used for cable-stayed bridges with steel girders, and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D21/00E01D21/10
CPCE01D21/00E01D21/10
Inventor 严杰尹振君付浩芦登科陶志力王俊华陈文梅文兵安东航浦遇春
Owner THE 5TH ENG MBEC
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