Butt strap structure construction method for bridgehead bumping

Abstract

The invention discloses a butt strap structure construction method for bridgehead bumping. The butt strap structure construction method is characterized by comprising the following construction stepsof: (1) constructing cement mixing piles; (2) excavating a surface soil body of the concrete butt strap part; (3) implanting longitudinal drainage plates and water stop plates into the soil body; (4)paving a sandstone cushion layer at the part where transverse drainage plates is placed, and tamping the sandstone cushion layer; (5) inserting the transverse drainage plates into the grooves of the longitudinal drainage plates and the water stop plates; (6) drilling a water pumping holes in the left sides of the longitudinal drainage plates; (7) communicating the steel bars buried in the longitudinal drainage plates with a cathode of a power source, meanwhile, communicating the steel bars buried in the water stop plates with an anode of the power source, and pumping water synchronously through water pumping holes; (8) laying light filler on the transverse drainage plates, and arranging geotechnical cloth on the light filler; (9) inserting a dowel bar into the groove of a pavement slab; and (10) filling the deformation joint with hemp threads, and then laying a steel cover plate at the top of the deformation joint.

Description

technical field [0001] The invention relates to the field of bridges, and more specifically relates to a construction method for a lapping structure used for bridge head jumping. Background technique [0002] Vehicle jumping at the bridge head often occurs in soft soil areas. The reason is that the bridge deck is reinforced with bored piles and other rigid piles, and the road is treated with foundation treatment methods, such as composite foundations such as cement mixing piles or vacuum pre-stacking. Due to the great difference in the settlement of the two soils, the settlement of the rigid pile is relatively small, while the settlement of the soil is relatively large under the traditional foundation treatment method, so there will be a difference in settlement between the two, resulting in the bridge head jumping phenomenon. How to reduce the post-construction settlement of the bridge head and ensure that the structure of the bridge head will not be damaged due to poor set...

AI Technical Summary

Problems solved by technology

Due to the great difference in the settlement of the two soils, the settlement of the rigid pile is relatively small, while the settlement of the soil is relatively large under the traditional foundation treatment method, so there will be a difference in settlement between the two, resulting in the bridge head jumping phenomenon

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