Supporting device capable of controlling slow descent of abutment approach slab

Abstract

The invention relates to a supporting device capable of controlling the slow descent of an abutment approach slab. The technical problem about staggering caused by the limited capacity of slow descent of the approach slab is mainly solved. According to the technical scheme, the supporting device capable of controlling the slow descent of the abutment approach slab comprises a upright supporting column connected with the approach slab, a protective box, a positioning ring, a wedge cushion block, slow descent control mechanisms and ropes; the positioning ring is arranged in the middle of an inner cavity of the protective box and connected with the two side walls of the inner cavity of the protective box through connecting rods, the wedge cushion block is arranged on the lower portion of the inner cavity of the protective box, and the bottom of the wedge cushion block is located in a sliding groove in the protective box. The bottom of the upright supporting column makes direct contact with the oblique plane of the wedge cushion block through the positioning ring, the upper end of the upright supporting column penetrates through a column hole in a panel on the protective box, the side faces of the wedge cushion block are connected with gear shafts of the slow descent control mechanisms through the ropes respectively, and the slow descent control mechanisms are arranged on the two sides on the upper portion of the protective box respectively. The supporting device has the advantages that the overall bearing capacity is high, the deformation is small, the applicability is high, engineering materials are saved, and construction and maintenance are easy.

Description

technical field [0001] The invention relates to a supporting device for controlling the slow down of the abutment slab. Background technique [0002] With the rapid development of road and bridge construction and the improvement of road grades, higher requirements are put forward for the indicators of safety, comfort and speed during the operation of roads and bridges. Vehicle jumping at the bridge head is a relatively common phenomenon during the use and service of roads and bridges, which causes bumps and discomforts for drivers and passengers, and seriously affects the safety and comfort of vehicles. At the same time, it will also greatly decelerate the driving vehicles, causing traffic accidents in different degrees, bringing potential safety hazards to people, and causing adverse social impacts. At the same time, the additional dynamic load caused by the jump and impact of vehicles passing through the road-bridge transition section and the coupling effect of water dama...

AI Technical Summary

Problems solved by technology

However, in fact, the length of the slab is limited after all. The height difference between the abutment and the subgrade can be partially reduced by the slab, but there is still differential settlement between the end of the slab and the subgrade, resulting in vehicle jumping

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