CN-121992778-A - Road-to-bridge pile and column integrated construction method

Abstract

The invention discloses an integral construction method of a road-to-bridge pile, which comprises the following construction steps of cleaning an original road surface, utilizing an old road surface as a construction site, directly forming holes on the original road surface by using a rotary drilling pile, processing and installing a permanent steel casing of a concrete column, processing, inserting and linking a reinforcement cage, integrally pouring cement concrete of the pile, and fully maintaining and detecting the pile after pouring is completed. The construction method uses the original road surface as a construction site, reduces engineering quantity and construction time of road surface roadbed excavation, site leveling rolling and the like, ensures the stability of the construction site, adopts the technology of integral hole forming and one-time concrete pouring on the original road surface pile, has high construction efficiency, shortens the construction period, adopts an embedded permanent upright post steel pile casing, has good structural stability, improves the stability of an upright post, ensures the integrity and uniformity of pile concrete through cement concrete pile integrated pouring construction, and improves the construction quality.

Inventors

• ZHANG HONGWU
• WANG XIANAN
• LI BO
• HAO YAOHU
• GAO XUEKAI
• ZHANG BICHANG
• WEN HAO
• RONG YAPENG

Assignees

• 山西省交通科技研发有限公司

Dates

Publication Date

20260508

Application Date

20251231

Claims (2)

1. 1. The road-to-bridge pile column integrated construction method is characterized by comprising the following steps of: Preparing construction, namely taking an original road structure as a construction platform; rotary digging and pore forming, namely adopting a rotary digging and pore forming technology on an original road surface, wherein the elevation of the bottom of the pore is the designed elevation of the bottom of the pile foundation; The embedded upright post permanent steel pile casing is installed, namely the processed steel upright post pile casing is lowered to a hole site, the length of the upright post steel pile casing exceeds 1 meter of the length of the upright post, and the upper part of the pile foundation is protected by 1 meter; inserting and linking the reinforcement cages, namely sequentially inserting pile foundation reinforcement cages and upright reinforcement cages, and linking; The reinforced concrete integral pouring is carried out, namely pile reinforced concrete integral pouring construction is carried out; And excavating roadbed soil among columns and carrying out corrosion prevention and attractive treatment on permanent upright column steel casings.
2. 2. The construction method for the road-to-pier column according to claim 1, wherein the same-label concrete is adopted for pile integrally casting construction, so that the compactness and uniformity of the concrete are ensured.

Description

Road-to-bridge pile and column integrated construction method Technical Field The invention belongs to the technical field of bridge construction, and particularly relates to an integral construction method for a road-to-bridge pile column. Background When a newly built road is crossed with an existing road, the condition that the roadbed is required to be changed into a bridge can be possibly met, the road-to-bridge construction steps comprise the steps of preparing work before construction, performing semi-closed and semi-constructed organization work, manually digging holes in the upper parts of pier columns, adopting a bored pile mode for pile foundations, taking the excavated roadbed as a support, erecting a template, implementing an upper structure box girder part, 2, digging a embankment to a designated pile foundation construction surface, adopting the bored pile mode for pile foundations, implementing another semi-bridge by repeating the steps, implementing auxiliary facilities, excavating the subgrade under the bridge, and recovering the normal operation. The construction method has the following problems that 1, the pier column artificial hole excavation needs to be carried out after pile foundation construction is completed, the construction period is long, particularly, the road to be changed and the bridge to be operated by road passing is not facilitated, a temporary passage protecting way with long passing time needs to be additionally arranged, 2, the pile head is broken, the upper part of the pier column of the pier is subjected to artificial hole excavation, certain potential safety hazards exist, 3, the pile head breaking quality, the pier column steel bar linking, the concrete pouring and other links are difficult to control, the construction quality is difficult to guarantee and the like due to narrow space. Therefore, the construction of the road-to-bridge requires a construction method which is safe in construction, reliable in quality and relatively short in period. Disclosure of Invention The invention provides an integral construction method of a road-bridge pile column, which is characterized in that an original road surface is used as an operation platform to directly form a hole (the elevation of the bottom of the hole is the design elevation of the bottom of a pile foundation, the diameter of a pier column is consistent), an embedded type column steel pile casing is arranged in advance on a column section, then the column steel reinforcement cage is placed and connected, and then the column concrete is poured into an integral form, and after the soil body between columns is taken out, the embedded type permanent steel pile casing protection is subjected to corrosion prevention and attractive treatment. The method mainly comprises the following concrete construction steps: The construction preparation comprises the steps of cleaning the original road surface, utilizing the original road structure as a construction platform, saving measures such as site leveling and rolling, and the like. And (3) rotary drilling, namely, using a rotary drilling machine to perform hole forming on the old road, and ensuring the perpendicularity and depth of the hole, wherein the elevation of the bottom of the hole is the designed elevation of the bottom of the pile foundation. And installing the embedded permanent upright post steel pile casing, namely lowering the machined upright post steel pile casing to a hole site, wherein the length of the pile casing exceeds 1 meter of the length of the column, protecting 1 meter of the upper part of the pile foundation, and ensuring the verticality and the fixation of the bottom of the pile casing. And the reinforcement cage is processed, inserted and connected, namely the pile foundation reinforcement cage and the upright post reinforcement cage are processed, and the size and the shape of the reinforcement cage are ensured to meet the design requirements. And sequentially inserting the reinforcement cages into the pile casings and linking the reinforcement cages. And (3) reinforced concrete pouring, namely after the reinforcement cage is inserted and linked, carrying out integral pouring construction of the reinforced concrete, and ensuring compactness and uniformity of the concrete. And (3) after the pouring is finished, proper curing is performed to ensure the strength and stability of the concrete. And meanwhile, necessary detection is carried out, so that the construction quality is ensured to meet the design requirement. And excavating soil among the columns, namely excavating the soil among the columns and excavating the soil among the columns after the upper structure is completed after the strength of the column concrete meets the requirement. And (5) anti-corrosion and attractive treatment of the embedded permanent steel casing. The construction method has the main characteristics and advantages of high construction efficiency, full utilization