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Large-span steel connecting bridge and integral hoisting method thereof

A large-span, bridge-connecting technology, applied in the on-site preparation of pillars and building components, construction, etc., to shorten the construction time, overcome the limitations of the construction site, and reduce the impact.

Inactive Publication Date: 2010-09-29
CHINA CONSTR SECOND ENG BUREAU LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a long-span steel bridge and its overall hoisting technology, to solve the technical problem of the connection between the steel bridge and the original building; and to solve the problem of fast hoisting of the long-span steel bridge in a narrow space

Method used

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  • Large-span steel connecting bridge and integral hoisting method thereof
  • Large-span steel connecting bridge and integral hoisting method thereof
  • Large-span steel connecting bridge and integral hoisting method thereof

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Embodiment Construction

[0036] Examples see Figure 1 to Figure 8 As shown, the first phase and the second phase of an office building are constructed in phases, and the second phase is a new structure. It is necessary to add steel connecting bridges between the eighth, ninth and tenth floors of the original steel structure and the new steel structure (two bridges in total, one in the east and one in the east, symmetrically arranged). Axial dimensions of the bridge: span 36.1m, width 2.7m, height 8.01m, divided into two floors, the bottom elevation is 32.87m, the steel bridge top elevation is 40.880m, and the entire steel bridge weighs about 122 tons. The long-span steel connecting bridge is a steel truss composed of upper chord 1, middle chord 2, lower chord 3, steel column 4 and connecting rods. The connecting rods include horizontal connecting rods 5 and oblique connecting rods 12. One end of the bridge is connected to the new building through high-strength bolts, and the other end is connected t...

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Abstract

The invention relates to a large-span steel connecting bridge and an integral hoisting method thereof. One end of a steel connecting bridge is connected with an original building through a high-strength bolt, and the other end is connected with a new building through a lead core rubber support saddle; an integral hoisting method is adopted for the hoisting of the steel connecting bridge, before a caterpillar crane enters a main hoisting position, a truck crane is used for raising the steel connecting bridge so as to move the steel connecting bridge to the installation position, and until the steel center stays in the main hoisting range of the caterpillar crane, the steel connecting bridge is integrally hoisted to the place through the caterpillar crane. Through a shock-isolation support saddle and a damper, the large-span steel connecting bridge can be arranged between the original building and the new building when the installation position is not previously reserved, the difficulties such as the restriction of the construction field, the restriction of the underground structural complexity and the restriction of the narrow integral hoisting space structure and the like can be overcome during the hoisting process, the normal use of the original building is ensured, and the construction period is shortened. The method can be widely applicable to the construction of the connecting bridge which is established on the present building.

Description

technical field [0001] The invention relates to a long-span steel connecting bridge and its overall hoisting technology, in particular to a steel connecting bridge erected between an existing building and a new building. Background technique [0002] The erection of steel bridges is generally constructed simultaneously with the main building or planned at the beginning of the design of the main building. However, in actual engineering, after the completion of the main building, the project needs to be connected with the original building during use or later. At this time , the original building did not reserve the relevant components connected with the steel bridge, so the connection between the steel bridge and the original building became the difficulty of erecting the steel bridge. Improper connection will change the stress mode of the original building, causing Potential structural safety hazards, the connection method provided by the invention can effectively reduce th...

Claims

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Application Information

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IPC IPC(8): E04B1/19E04B1/342E04B1/38E04B1/58E04G25/04E04G21/14
Inventor 翟雷张桂敏荣军成安凤杰杨凯明胡大川张辉贺国强韩阳
Owner CHINA CONSTR SECOND ENG BUREAU LTD
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