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Large open caisson combined sinking process for sand-rock composite stratum
The invention belongs to the technical field of open caisson sinking, and discloses a sand-rock composite stratum large open caisson combined sinking process which comprises the following steps: S1, reinforcing a soil body in a construction range through a high-pressure jet grouting pile; s2, a shallow foundation pit is constructed on the reinforced soil body; and S3, an open caisson is manufactured in the shallow foundation pit, manufacturing of the multiple sections of open caissons and sinking of the open caissons are alternately conducted, the open caissons are sunk in the stratum with the small water seepage amount through a drainage sinking method, and the open caissons are sunk in the stratum with the large water seepage amount through a non-drainage sinking method. The open caisson can sink in different stratums in the most suitable mode, the sinking speed of the open caisson is ensured, the problem that the sinking speed of the large open caisson in some stratums is obviously reduced when the large open caisson sinks in a traditional method is solved, the construction efficiency of the large open caisson is improved, smooth construction of the large open caisson is ensured, and the construction cost is reduced. And obvious social and economic benefits are obtained.
本发明属于沉井下沉技术领域，公开了一种砂‑岩复合地层大型沉井组合式下沉工艺，包括：S1、通过高压旋喷桩对施工范围内的土体进行加固；S2、在加固后的土体上进行浅基坑的施工；S3、在浅基坑内制做沉井，若干节沉井的制做和沉井的下沉交替进行，在渗水量小的地层中采用排水下沉法对沉井进行下沉，在渗水量大的地层中采用不排水下沉法对沉井进行下沉。使沉井在不同地层都能够以最适合的方式进行下沉，确保了沉井下沉的速度，避免了大型沉井在使用传统方法下沉时在一些地层下沉速度明显降低的问题，提高了大型沉井的施工效率，确保了大型沉井的顺利施工，取得明显的社会、经济效益。
Large open caisson combined sinking process for sand-rock composite stratum
The invention belongs to the technical field of open caisson sinking, and discloses a sand-rock composite stratum large open caisson combined sinking process which comprises the following steps: S1, reinforcing a soil body in a construction range through a high-pressure jet grouting pile; s2, a shallow foundation pit is constructed on the reinforced soil body; and S3, an open caisson is manufactured in the shallow foundation pit, manufacturing of the multiple sections of open caissons and sinking of the open caissons are alternately conducted, the open caissons are sunk in the stratum with the small water seepage amount through a drainage sinking method, and the open caissons are sunk in the stratum with the large water seepage amount through a non-drainage sinking method. The open caisson can sink in different stratums in the most suitable mode, the sinking speed of the open caisson is ensured, the problem that the sinking speed of the large open caisson in some stratums is obviously reduced when the large open caisson sinks in a traditional method is solved, the construction efficiency of the large open caisson is improved, smooth construction of the large open caisson is ensured, and the construction cost is reduced. And obvious social and economic benefits are obtained.
本发明属于沉井下沉技术领域，公开了一种砂‑岩复合地层大型沉井组合式下沉工艺，包括：S1、通过高压旋喷桩对施工范围内的土体进行加固；S2、在加固后的土体上进行浅基坑的施工；S3、在浅基坑内制做沉井，若干节沉井的制做和沉井的下沉交替进行，在渗水量小的地层中采用排水下沉法对沉井进行下沉，在渗水量大的地层中采用不排水下沉法对沉井进行下沉。使沉井在不同地层都能够以最适合的方式进行下沉，确保了沉井下沉的速度，避免了大型沉井在使用传统方法下沉时在一些地层下沉速度明显降低的问题，提高了大型沉井的施工效率，确保了大型沉井的顺利施工，取得明显的社会、经济效益。
Large open caisson combined sinking process for sand-rock composite stratum
砂-岩复合地层大型沉井组合式下沉工艺
CHEN RUIWEN (author) / YE LIJUN (author) / HUO ZHENFENG (author) / WANG XINGLONG (author) / JIN RONG (author)
2023-10-13
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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