Wedge-shaped Geocell cement reinforced soil structure for road-bridge connection and construction method thereof

Abstract

The invention relates to a wedge-shaped Geocell cement reinforced soil structure for road-bridge connection and a construction method thereof. The structure comprises cement stabilized soil (4), fillers and Geocells (3), wherein one ends of the Geocells (3) are fixed a bridge arch table back (2), the other ends of the Geocells (3) are fixed on a roadbed (5), the Geocells (3) are arranged in multi-layer way from top to bottom, the fillers and the cement stabilized soil (4) are filled between two adjacent layers of Geocells (3), the cement stabilized soil (4) is filled at one ends, closed to the bridge arch table back (2), of the Geocells (3), the length of the cement stabilized soil at the top layer is (1 / 2)-(3 / 4) of that of the Geocell at the top layer, the other parts of the Geocells (3) are filled with the fillers, and the lengths of the cement stabilized soil (4) and the Geocells (3) are gradually reduced in a layer-by-layer way so as to form a wedge shape or a frustum. The wedge-shaped Geocell cement reinforced soil structure and the method can effectively reduce a problem of bumping at a bridge-head, improve comfort and safety of traveling, simultaneously and extremely reduce maintenance cost for processing the bridge-head, and are obvious in economic benefit.

Description

technical field [0001] The invention relates to a roadbed paved by stabilizing soil, in particular to a wedge-shaped geocell cement-reinforced soil structure and a construction method for road-bridge connection. Background technique [0002] At present, for the treatment of the road disease of bridge head jumping at home and abroad, bridge head slabs are often installed in the transition section of the road bridge, or foundation reinforcement treatment, such as shallow layer replacement, compacted sand piles, cement mixing piles, CFG piles, and pipes. methods such as piles. From the perspective of engineering practice, differential settlement and transverse cracks are prone to occur on the road surface at the junction of the end of the bridge head slab and the subgrade, and the problem of "secondary car jumping" is prone to occur. Problem: When the soft foundation treatment method is adopted, due to the high filling height of the embankment at the bridgehead section, th...

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Problems solved by technology

From the perspective of engineering practice, differential settlement and transverse cracks are prone to occur on the road surface at the junction of the end of the bridge head slab and the subgrade, and the problem of "secondary car jumping" is prone to occur. Problem: When the soft foundation treatment method is adopted, due to the high filling height of the embankment at the bridgehead section, the differential settlement of the bridgehead cannot be basically eliminated; while the flexible reinforcement technology of geosynthetics is used in the connecting section between the geosynthetics and the back of the bridgehead. The reinforcement rigidity is not enough, and the reinforced body is too stressed to affect the reinforcement effect.

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