Large-span steel connecting bridge and integral hoisting method thereof

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...

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