Construction Process and Method of Bridge Expansion Joint 

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chenchen12495
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Joined: 8/9/2016
Topic  Construction Process and Method of Bridge Expansion Joint       Flag »  Reply »

1, bridge expansion joints before the construction of bridge expansion joints in the construction, the need for a series of construction preparations. For the preparation of the bridge, the current in order to ensure the construction control is simple and can achieve high quality, generally require the expansion of the construction of the bridge in the black pavement after continuous paving completed; for the expansion joints,road transverse maintenance equipment before the construction of the expansion joints Quality inspection, in strict accordance with the manufacturer's requirements for loading and unloading, placement and transportation, for bending, torsion of the expansion joints can not be used; for the bridge expansion joints construction of concrete, must use high-quality cement and aggregate, and through the Index test qualified, under normal circumstances the strength of concrete than the beam of a higher level, when necessary, can be mixed with a certain amount of admixture; for the installation of positioning values ??in different temperature conditions may produce different values, the need to install the positioning value must Satisfied at the maximum temperature when the expansion joints are left with the minimum working width and a certain surplus, at the minimum temperature can not exceed the maximum clearance requirements of traffic.

Construction process and method of bridge expansion joint Before doing the preparatory work related to the construction of the bridge expansion joints, the following is the construction of the bridge expansion joints. In general, the construction of bridge expansion joints is divided into four steps: slotting, installation, pouring concrete and curing.Beam expansion joints construction,cracked garage floor repair the first should be in accordance with the requirements of the construction drawings to determine the width of the slot, accurate lofting, cutting machine with cutting, and pay attention to protect the suture other than the suture, to prevent the saw when the stone powder pollution pavement.

In the installation of the bridge should be installed to take into account the installation of the temperature and the factory temperature is greater access, if any, in the installation of expansion joints should be adjusted before the positioning of the gap. In the installation of "160mm telescopic device,asphalt emulsion machine should be in accordance with the telescopic device displacement protection box position, cut off the interference of embedded steel. In the installation of expansion joints, should be used gantry hanger and angle positioning, to both sides of the asphalt concrete surface level prevail, control the scale of the telescopic device. When selecting a template, use foam boards, fibreboards, thin iron plates, etc., and should be firm and tight.

  Thursday, March 9, 2017 at 11:29:40 PM

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