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Follow-up support cushion block for jacking construction of buildings

A technology for supporting pads and buildings, which is used in construction, bridge construction, erection/assembly of bridges, etc., can solve the problems of difficult installation, high risk, poor flatness of the superstructure, etc., and achieves easy installation and use, high safety and reliability. The effect of good safety and reliability

Active Publication Date: 2012-10-03
SHANGHAI URBAN CONSTRUCTION MUNICIPAL ENGINEERING (GROUP) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 1. In this method (system), a micrometer is used to measure the distance between the supporting device and the superstructure to control the lifting of the supporting device. This design concept is difficult to realize in actual construction
Different from the field of machining technology, in the field of building construction technology, it is generally impossible to achieve high precision, and the flatness of the bottom of the upper structure is relatively poor. In this environment, there will be large errors in the use of micrometers
[0006] 2. Even if the above-mentioned error factors are put aside, the above-mentioned follow-up support system still has problems that cannot be overcome
[0007] 3. The servo motor mounted on the following support device is relatively large, which makes the plane size of the follow support device large and difficult to install during use
[0008] From the above discussion, it can be seen that the automatic following support system and method have certain insurmountable defects in actual use, and there are still relatively large risks when applied to bridge jacking construction.

Method used

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  • Follow-up support cushion block for jacking construction of buildings
  • Follow-up support cushion block for jacking construction of buildings
  • Follow-up support cushion block for jacking construction of buildings

Examples

Experimental program
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Effect test

Embodiment 1

[0027] see figure 1 In the bridge structure involved in this embodiment, the superstructure is a three-span variable-section prestressed concrete continuous box girder 1, and the bottom of the continuous box girder 1 is supported by pier 2. Based on this structure, this embodiment adopts the direct jacking method, that is, the bridge pier 2 is used as the counter force basis, and the jacking hydraulic cylinder 4 is installed between the bridge pier 2 and the bottom of the continuous box girder 1, and is controlled synchronously by the PLC computer, and the whole box is lifted. Girder (the upper part of the box girder needs to be reinforced) to achieve the purpose of raising the elevation of the main bridge deck.

[0028] see figure 2 , the main structure following the supporting pad 9 in this embodiment is a steel box with the same height as the minimum height of the jacking hydraulic cylinder 4 . The steel box is in the shape of a cuboid, and is composed of a mounting base...

Embodiment 2

[0043] see figure 2 In this embodiment 2, a number of reinforcing ribs 10 are arranged in the supporting pad 9, and the reinforcing ribs 10 are vertically welded on the installation base 12, and the end faces on both sides are welded to the inner surface of the side plate 11 or welded to each other. And follow the support pad 9 is divided into several cavities 3. In each cavity 3, a following hydraulic cylinder 5 is set and fixed. The lower end surfaces of the reinforcing ribs 10 are flush with the lower end surfaces of the side plates 11 and combined to form a lower supporting surface following the supporting pads 9 .

[0044] Due to the need to support the upper structure, the following hydraulic cylinders 5 are usually used in groups. In this embodiment 2, a set of following hydraulic cylinders 5 is set in the following support pad 9, which can effectively save installation space; and reinforcing ribs 10 are set between the following hydraulic cylinders 5, which not only...

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Abstract

The invention relates to a technique of heightening a bridge, in particular to a follow-up support cushion block for the jacking construction of buildings. At least one follow-up hydraulic cylinder is arranged inside the follow-up support cushion block; at least one cavity body is arranged inside the follow-up support cushion block; the cavity body comprises a cavity opening arranged on a lower support surface; the follow-up hydraulic cylinder is fixedly arranged inside the cavity body; the follow-up hydraulic cylinder is arranged vertically to the support surface; the jacking end can extend out / completely shrink into the cavity body from the cavity opening, and a connection device fixedly connected with the upper structure is arranged on the upper support surface of the follow-up support cushion block. The follow-up support cushion block for jacking construction of the buildings has the advantages of high safety reliability, good synchronism, maneuverability and overall load-bearing performance, and can be used as a follow-up support mechanism capable of effectively supporting an upper heightening bridge and preventing the upper bridge from slipping off when the oil pressure of the cylinder suddenly disappears or an oil pipe bursts.

Description

technical field [0001] The invention relates to bridge heightening technology, in particular to a follow-up support pad used for building jacking construction. Background technique [0002] At present, in the reconstruction of rivers, railways and highways, the clearance of bridges and the connection between the alignment of existing bridges and the alignment of new bridges are difficult issues in the reconstruction. At present, many highway bridges across rivers in China are facing the problem of reconstruction due to insufficient clearance under the bridges. For the reconstruction of old bridges, the traditional method is to demolish and rebuild the old bridges, which will consume a lot of financial and material resources, and the long construction period will have a great impact on society. As a new type of bridge reconstruction technology, bridge jacking technology has the advantages of reasonable economy, short construction period, and less impact on the social environ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D22/00
Inventor 赵国强丁瑜于国伦桂钰陈俊良
Owner SHANGHAI URBAN CONSTRUCTION MUNICIPAL ENGINEERING (GROUP) CO LTD