Operation highway bridgehead vehicle jump disposition structure and method based on structural distortion coordination control

Abstract

The invention discloses an operation highway bridgehead vehicle jump disposition structure and method based on structural distortion coordination control. The disposition structure is located between a roadbed bearing pile and the bottom of an embankment. A plurality of high-pressure jet grouting pile bodies which have a certain thickness and certain strength and are distributed in a rectangular array mode are formed through high-pressure grouting. The adjacent high-pressure jet grouting pile bodies mesh with each other to form a grouting reinforcement layer parallel to a road surface. The top of the roadbed bearing pile extends into the grouting reinforcement layer, and the upper load is evenly distributed to the roadbed bearing pile and a soft soil foundation through the grouting reinforcement layer. The key point of the method is that the needed grouting reinforcement layer is formed through a single tube high-pressure jet grouting method. According to the structure and method, the upper load can be evenly distributed to the bearing pile and the soft soil foundation, the load borne by the soft soil foundation is effectively reduced, and later settlement of the foundation can be effectively controlled.

Description

technical field [0001] The invention belongs to the field of construction methods, and in particular relates to a vehicle jumping treatment structure and method at the bridge head of an operating highway based on coordinated control of structural deformation. Background technique [0002] Vehicle jumping at the bridge head refers to the uneven settlement difference between bridges, culverts and other structures and the embankment on the back of the abutment or the sudden change of the large longitudinal slope in the operating highway project, which causes the vehicle to bump and jump when passing the road-bridge junction quickly, such as figure 1 shown. At present, the soft soil roadbed is usually reinforced by grouting, and the upper part of the bridge abutment is added to deal with it, but the key link that affects the phenomenon of vehicle jumping at the bridge head has not been specified. [0003] High-pressure jet grouting is a common soft soil foundation reinforcement...

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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the phenomenon of vehicle jumping at the bridge head in the prior art has not been effectively controlled, and to provide a vehicle jumping treatment structure at the bridge head of the operating highway based on the coordinated control of structural deformation, forming a pile-soil joint action subgrade bearing system, Meet the integrity requirements of the stress and deformation state of the roadbed, effectively control the continued settlement of the roadbed in the later stage, and ensure the disposal effect of the bridge head jumping vehicle

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