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Construction method of overhead line jacking underpass type reinforced concrete frame bridge by auxiliary beam lifting method

A reinforced concrete and overhead line technology, applied in bridges, bridge construction, erection/assembly of bridges, etc., can solve the problem of difficulty in adjusting the position of horizontal lift beams or D-type beams, heavy weight of D-type beams, troublesome bolts, etc. problems, to achieve the effect of convenient jacking operation, reduced friction, and firm positioning

Active Publication Date: 2021-09-07
中铁一局集团(广州)建设工程有限公司 +1
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  • Application Information

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Problems solved by technology

[0004] But in the above-mentioned construction process, the inventor thinks that because the length of the D-shaped beam is generally set longer, and the weight of the D-shaped beam is relatively large, when the D-shaped beam is pressed on the cross-lifting beam, the cross-lifting beam and the D-type When the holes of the connecting bolts on the convenience beam do not correspond, it is difficult to adjust the position of the horizontal lifting beam or the D-shaped convenience beam, which makes it more troublesome to pass the bolts between the horizontal lifting beam and the D-shaped convenience beam

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  • Construction method of overhead line jacking underpass type reinforced concrete frame bridge by auxiliary beam lifting method
  • Construction method of overhead line jacking underpass type reinforced concrete frame bridge by auxiliary beam lifting method
  • Construction method of overhead line jacking underpass type reinforced concrete frame bridge by auxiliary beam lifting method

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Embodiment Construction

[0039] The following is attached Figure 1-7The application is described in further detail.

[0040] The embodiment of the present application discloses a construction method of a reinforced concrete frame bridge with a convenient beam lifting method for jacking and passing through an overhead line. refer to figure 1 , including making vertical buttresses 1, laying horizontal lifting beams 2, connecting beams 3, excavating ducts 4, making frame 5 and jacking frame 5.

[0041] refer to figure 1 , to make the vertical pier 1, choose a suitable position and be located on both sides of the existing line, the existing line is the rail, there are at least two sets of vertical pier 1, and one set of vertical pier 1 is in the same section of the existing line Two vertical buttresses 1 at the position, first excavate pile pits on both sides of the existing line. The pile pits are cylindrical and can be drilled with a drilling machine. Concrete is poured inside to form a vertical pi...

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Abstract

The invention relates to a construction method of an overhead line jacking underpass type reinforced concrete frame bridge by an auxiliary beam lifting method, the construction method comprises the steps of manufacturing a vertical buttress, laying a transverse lifting beam, connecting the auxiliary beam, excavating a duct, manufacturing a frame and jacking the frame. Firstly, an installation vehicle is placed on an existing line, and the installation vehicle comprises a vehicle body, supporting wheels and a lifting arm; a lifting device used for adjusting the height of the lifting arm is arranged on the vehicle body, the vehicle body is connected to the existing line in a rolling mode through supporting wheels, the two ends of the lifting arm are each connected with a sliding block in a sliding mode, a lifting hook used for lifting an auxiliary beam is arranged below the sliding blocks, and a translation device used for driving the sliding hooks to slide on the lifting arm is arranged on the lifting arm. After the auxiliary beam is lifted through the lifting hook, the transverse lifting beam is moved to correspond to the connecting position of the transverse lifting beam and the auxiliary beam, the transverse lifting beam and the auxiliary beam are pre-connected firstly, then the auxiliary beam is put down through the lifting device, and then bolts and nuts connected between the transverse lifting beam and the auxiliary beam are screwed and fixed. The construction method has the effect of facilitating connection between the auxiliary beam and the transverse lifting beam.

Description

technical field [0001] The present application relates to the technical field of frame bridge construction, in particular to a construction method of a reinforced concrete frame bridge with overhead line jacking and underpassing by the convenient beam lifting method. Background technique [0002] The frame bridge is constructed by jacking. Before the jacking construction, the existing lines, such as railways, need to be elevated, so that the road construction under the existing lines can be completed without interrupting the normal operation of the existing lines. Therefore, it is widely used in the underpass of existing lines. [0003] The patent document with the authorized announcement number CN203487475U discloses a line overhead reinforcement structure for the construction of existing line jacking bridges and culverts. The support pier, the longitudinal and horizontal beam reinforcement frame includes multiple horizontal beams arranged from left to right and multiple l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D21/00E01D21/06
CPCE01D21/00E01D21/06
Inventor 欧琼徐成双何修义童建勇韦刚郭胜涛
Owner 中铁一局集团(广州)建设工程有限公司
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