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Construction method for sinking of open caisson bedrock section
The construction method for sinking of the open caisson bedrock section comprises the following specific steps that S1, an open caisson is manufactured, and the open caisson is composed of a caisson wall and a blade foot; s2, the open caisson enters a bedrock section, a plurality of jacks are selected and arranged below a blade foot of the open caisson in a surrounding mode, and supporting cushion blocks used for supporting the blade foot are arranged at the tops of the jacks; s3, a prefabricated cushion block is arranged at the bottom of the jack, and the height of a blade foot is increased; s4, the operation range of each jack is divided, plungers of the jacks are shrunk one by one, section cutting is conducted on the bed rock section in the operation range, a new cushion block is prefabricated, and operation is cyclically conducted to the final sinking depth; s5, removing the prefabricated cushion blocks below the jacks one by one until all the prefabricated cushion blocks are removed; and S6, the jacks are replaced through the replacement cushion blocks, and the open caisson is subjected to pouring and bottom sealing. The sinking construction of the open caisson at the bedrock section does not need to adopt a blasting technology, the sinking operation of the open caisson at the bedrock section can be realized, and the delay of the construction period is avoided.
本发明公开了一种沉井基岩段下沉的施工方法，其包括如下具体步骤：S1、制作沉井，沉井由井壁和刃脚组成；S2、沉井进入基岩段，选择并在沉井的刃脚下方环绕设置有多个千斤顶，并在千斤顶顶部设置有用于支撑刃脚的支撑垫块；S3、对千斤顶底部设置预制垫块，抬升刃脚高度；S4、划分各千斤顶的作业范围，逐一收缩千斤顶的柱塞，对该作业范围内的基岩段进行断面切割并新家预制垫块，循环作业至最终下沉深度；S5、逐一去除千斤顶下方的预制垫块直至全部移除；S6、通过置换垫块置换千斤顶，对沉井浇筑封底。本发明在沉井在基岩段下沉施工，不再需要采用爆破技术，也能够实现沉井在基岩段的下沉作业，避免延误工期。
Construction method for sinking of open caisson bedrock section
The construction method for sinking of the open caisson bedrock section comprises the following specific steps that S1, an open caisson is manufactured, and the open caisson is composed of a caisson wall and a blade foot; s2, the open caisson enters a bedrock section, a plurality of jacks are selected and arranged below a blade foot of the open caisson in a surrounding mode, and supporting cushion blocks used for supporting the blade foot are arranged at the tops of the jacks; s3, a prefabricated cushion block is arranged at the bottom of the jack, and the height of a blade foot is increased; s4, the operation range of each jack is divided, plungers of the jacks are shrunk one by one, section cutting is conducted on the bed rock section in the operation range, a new cushion block is prefabricated, and operation is cyclically conducted to the final sinking depth; s5, removing the prefabricated cushion blocks below the jacks one by one until all the prefabricated cushion blocks are removed; and S6, the jacks are replaced through the replacement cushion blocks, and the open caisson is subjected to pouring and bottom sealing. The sinking construction of the open caisson at the bedrock section does not need to adopt a blasting technology, the sinking operation of the open caisson at the bedrock section can be realized, and the delay of the construction period is avoided.
本发明公开了一种沉井基岩段下沉的施工方法，其包括如下具体步骤：S1、制作沉井，沉井由井壁和刃脚组成；S2、沉井进入基岩段，选择并在沉井的刃脚下方环绕设置有多个千斤顶，并在千斤顶顶部设置有用于支撑刃脚的支撑垫块；S3、对千斤顶底部设置预制垫块，抬升刃脚高度；S4、划分各千斤顶的作业范围，逐一收缩千斤顶的柱塞，对该作业范围内的基岩段进行断面切割并新家预制垫块，循环作业至最终下沉深度；S5、逐一去除千斤顶下方的预制垫块直至全部移除；S6、通过置换垫块置换千斤顶，对沉井浇筑封底。本发明在沉井在基岩段下沉施工，不再需要采用爆破技术，也能够实现沉井在基岩段的下沉作业，避免延误工期。
Construction method for sinking of open caisson bedrock section
一种沉井基岩段下沉的施工方法
ZHOU JIANMING (author) / KONG LINGJU (author) / LIN XIAOXUAN (author) / ZHENG XINGFA (author) / LIU YUCHENG (author) / LEE CHANG-IN (author) / LUO HUI (author) / LIN CHAOYANG (author) / ZHANG ZHIQIAN (author) / LIN QIAN (author)
2023-06-02
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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