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Bridge jacking system based on releasable prestressed underpinning system and construction method thereof

A prestressed and disassembled technology, applied in bridges, bridge maintenance, bridge reinforcement, etc., can solve the problems of bridge structures that cannot be applied to self-heavy, small bearing capacity, heavy workload, etc., to ensure bearing capacity and facilitate connection and installation , The effect of convenient operation

Inactive Publication Date: 2018-11-23
ANHUI ROAD & BRIDGE GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are certain defects in the existing bridge jacking construction. For example, the column-holding beam jacking construction, which is used as a reaction force platform, has a small bearing capacity and cannot be applied to self-heavy bridge structures. Direct jacking will bring more problems to the entire construction. Large workload, less economical than column-hugged beam structures

Method used

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  • Bridge jacking system based on releasable prestressed underpinning system and construction method thereof
  • Bridge jacking system based on releasable prestressed underpinning system and construction method thereof
  • Bridge jacking system based on releasable prestressed underpinning system and construction method thereof

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Embodiment Construction

[0041] The technical solutions of the present invention will be further described and illustrated through specific examples below.

[0042] Unless otherwise specified, the raw materials used in the examples of the present invention are commonly used raw materials in the field, and the methods used in the examples are conventional devices and conventional methods in the field.

[0043] A bridge jacking system based on a detachable prestressed underpinning system, such as Figure 1-Figure 11As shown, it includes the enlarged cap 8 obtained by enlarging the original cap 7 of the bridge. The enlarged cap 8 is pre-installed with embedded anchor bolts 10, and the enlarged cap 8 is supported by pre-embedded anchor bolts 10. Use a plug-in construction frame 9; install an adjustable hoop prestressed support platform 11 on the plug-in construction frame 9 for support as a bridge jacking reaction platform; the bridge includes a cover beam 2 and a bridge to be lifted on the cover beam 2 ...

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Abstract

The invention relates to the technical field of bridge jacking equipment, comprising an insert-type construction frame for support use, an adjustable hoop prestressed support platform, a shaped capping-beam-elevating formwork support system and transverse limiting devices. The insert-type construction frame for support use is fixed to an expanded cap and is connected via embedded anchor bolts; theinsert-type construction frame for support use is quickly connected via connection sleeves, vertical rods, transverse rods and oblique rods. The adjustable hoop prestressed support platform can be composed of two dual-concave grooves and can reduce construction quantity using a cap as a reaction platform. The shaped capping-beam-elevating formwork support system includes a side formwork, an end formwork and extension slotted forms, and is quickly connected via grooves and tongues as well as connection rods. The transverse limiting devices are arranged at the two ends of a deck and is each composed of a limiting truss, support blocks, a rail for sliding of the support blocks, a fixing plate, and a transverse limiting jack. When the deck shifts transversely, gradual fine correction is madevia the transverse limiting jacks.

Description

technical field [0001] The invention relates to a jacking system, in particular to a bridge jacking system based on a detachable prestressed underpinning system and a construction method thereof. Background technique [0002] With the current economic and social development, land resources are relatively scarce, so the use of resources in space has become the current trend. The space under the bridge has attracted much attention due to its broad utilization prospects and convenient development. This requires the lifting of the original low bridge to meet the subsequent clearance requirements under the bridge. [0003] The existing bridge jacking technology can be divided into broken column jacking technology and non-broken column jacking technology according to whether the column is broken. The former mainly includes upper and lower column-holding beams, lower column-holding beam-cover beam, cap-cover beam and cap-pillar-holding beam; the latter includes direct jacking and...

Claims

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Application Information

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IPC IPC(8): E01D22/00E01D21/00
CPCE01D21/00E01D22/00
Inventor 王新泉
Owner ANHUI ROAD & BRIDGE GRP
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