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Replacement structure and construction method of active ultra-wide beam support

A wide beam and bearing technology, applied in bridges, bridge construction, bridge maintenance and other directions, can solve problems such as inconvenient placement of jacks and replacement and installation of bearings, affecting the effect of jacks supporting bridges, and easy sliding and misalignment of jacks. Possibility of deviation, protection from damage, reduced effect of arrangement

Active Publication Date: 2022-07-12
湖北省路桥集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are many problems in the replacement process of bridge supports, especially when replacing the super-wide beam supports in active service. When the jack is used, sliding and misalignment are prone to occur, which affects the effect of the jack supporting the bridge, and the jack used for the replacement of the support The lifting bracket is affected by the limitation of the bridge itself and the construction environment on site, so it is difficult to guarantee the reliability
At the same time, the ultra-wide beam body needs to be lifted to a certain height to deal with the diseased bearings. Since the gap between the bottom of the beam body and the platform cap (or bridge pier cover beam) is small, there is often insufficient space for the layout of jacks on the top of the bridge pier, and it is not convenient to place jacks and support replacement installation problems

Method used

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  • Replacement structure and construction method of active ultra-wide beam support
  • Replacement structure and construction method of active ultra-wide beam support
  • Replacement structure and construction method of active ultra-wide beam support

Examples

Experimental program
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Effect test

Embodiment 1

[0028] The replacement structure for the active ultra-wide beam body support includes the pier column protection hoop body 12 on the outer surface of the pier column 13 below the ultra-wide beam body 1 and the jacking platform on both sides of the pier column 13, and a lifting platform arranged on the top of the pier column 13. The platform 4 is replaced by the support between the lifting platforms and attached to the pier protection hoop body 12 . The support 6 is located between the extra-wide beam body 1 and the pier column 13 .

[0029] The jacking platform includes a rubber cushion 2, a double I-shaped jacking beam 3, a jack group 7, a support table 8, a temporary support pier 9 and a temporary enlarged foundation pier 11, and the temporary enlarged foundation pier 11 is arranged on the ground. 15, the temporary support pier 9 is arranged on the temporary enlarged foundation pier 11, the support table 8 is arranged on the temporary support pier 9, the jack group 7 is arra...

Embodiment 2

[0033] The construction method for the replacement structure of the active ultra-wide beam body support includes the following steps:

[0034] 1) as figure 2 As shown in the figure, the ground 15 around the bottom of the pier 13 is leveled and hardened, and the prepared section steel unit is used to bolt the hoop on the outside of the pier 13 to form the pier protection hoop body 12, which is bolted or welded in advance at the corresponding position. The horizontal anchor bolt 5, the connecting rod 10 and the horizontal fixed hinge support 14 are properly installed.

[0035] 2) as image 3 , Figure 4 As shown, the ground 15 on both sides of the pier column 13 is reinforced and a formwork is erected, and concrete is poured to form a temporary enlarged foundation pier 11 with pre-embedded anchor bolts. For the buttress 9, a steel support table 8 is installed on the top of the temporary buttress 9, and then the support table 8 is connected with the pier column protection hoo...

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Abstract

The present invention relates to a replacement structure for an active super-wide beam body bearing, which includes: a rubber cushion, a double I-shaped jacking beam, a jack group, a support table, a temporary support pier and a temporary enlarged foundation pier, wherein the temporary enlarged foundation pier is arranged on the On the ground, the temporary support pier is arranged on the temporary enlarged foundation pier, the support table is arranged on the temporary support pier, the jack group is arranged on the support table, and the upper surface of the double I-shaped jacking beam is provided with Rubber cushion, double I-shaped jacking beam is set on the jack group. The beneficial effects of the invention are as follows: the pier body is protected from damage during construction, the structure is strong, stable and reliable, a larger construction operation space is provided, and the technical advantages are obvious; more convenient operation space is reserved for replacing the platform; The arrangement of jacks is reduced, the possibility of deviation in the synchronous jacking process is reduced, and the force of the beam body is more uniform, so as to protect the bridge structure from damage.

Description

technical field [0001] The invention relates to the technical field of bridge engineering, in particular to a replacement structure and a construction method for an active ultra-wide beam body bearing. Background technique [0002] The bearing is an important structural component connecting the upper structure and the lower structure of the bridge. It is located between the bridge and the pad. It can reliably transfer the load and deformation of the upper structure of the bridge to the lower structure of the bridge, and is an important force transmission device for the bridge. With the increase of the service life of bridges, the existing bridge supports appear out-of-position, aging damage and other diseases, which form hidden safety hazards and directly affect the normal use of bridges. In order to maintain the normal use of the bridge bearing and maintain the safety of the structure, it is necessary to lift the bridge, carry out maintenance and construction operations suc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D22/00E01D19/04
CPCE01D22/00E01D19/04
Inventor 张威付建国张智勇余永丰
Owner 湖北省路桥集团有限公司