Jacking equipment for bridge construction

Abstract

The invention discloses a jacking device for bridge construction. The structure includes a base, a switch, an oil pump, a pressure gauge, a liquid supply pipe, and a jacking device. The upper side of the front end of the base is embedded and connected with the lower side of the switch. The side bolts are connected, the pressure gauge is embedded in the upper side of the left end of the base, the liquid supply pipe is connected between the pressure gauge and the jacking device, the jacking device is located on the left side of the base, and the jacking device includes an outer ring, a jacking rod, and an auxiliary device , the right side of the outer ring is threadedly connected with the liquid supply pipe, and the clamping head is pushed into the inside of the sleeve against the limit block by the push spring on the outside of the fixing rod through the clamp rod fixed on the inside of the sleeve to clamp the ejector rod, preventing the jack The local pressure of the bridge caused by a sudden failure increases the safety factor of the construction. When the bridge descends, the sealing layer squeezes the top block and pushes the push rod to make the fitting blocks fit together. Through static friction, the pressure buffer of the fitting block to the bridge is increased. .

Description

technical field [0001] The invention belongs to the field of bridge construction, and more specifically relates to a jacking device for bridge construction. Background technique [0002] Bridge jacking equipment is used to lift the bridge as a whole. It is usually used when the bridge needs to be diverted to give way, or when the bridge shifts due to impact, thermal expansion and contraction, partial load, etc., causing safety hazards. The equipment is lifted for subsequent construction. The lifting equipment is usually composed of a hydraulic jack, a generator and a hydraulic pump. Through digital control, the hydraulic jack is lifted at the same time and the bridge is lifted to lift the bridge upward. However, due to hydraulic jacking, the hydraulic rod will A strong compressive stress is formed at the bridge jacking point. At the same time, due to the variety of bridge structures, especially in box-type bridges, due to the excessive compressive stress of the hydraulic jac...

AI Technical Summary

Problems solved by technology

[0002] Bridge jacking equipment is used to lift the bridge as a whole. It is usually used when the bridge needs to be diverted to give way, or when the bridge shifts due to impact, thermal expansion and contraction, partial load, etc., causing safety hazards. The equipment is lifted for subsequent construction. The lifting equipment is usually composed of a hydraulic jack, a generator and a hydraulic pump. Through digital control, the hydraulic jack is lifted at the same time and the bridge is lifted to lift the bridge upward. However, due to hydraulic jacking, the hydraulic rod will A strong compressive stress is formed at the bridge jacking point. At the same time, due to the variety of bridge structures, especially in box-type bridges, due to the excessive compressive stress of the hydraulic jack on the load-bearing position of the bridge center, the local compressive stress will be too large, and due to Multiple hydraulic jacks are pressurized at the same time, and one of them leaks or is damaged, which will increase the compressive stress of the rest of the box bridge, resulting in damage to the lower part of the bridge body, or even bridge collapse.

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