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A platform for research: civil engineering, architecture and urbanism
Cement soil bamboo joint pile construction method
In order to solve the problems of small pile diameter, poor quality, low construction efficiency and the like of a cement soil mixing pile, the invention provides a cement soil bamboo joint pile construction method which is based on a bamboo joint pile construction device. The bamboo joint pile construction device is composed of a drill rod, a power head, a lifting mechanism and a drill bit. Mixing rods are arranged on the drill bit. High-pressure nozzles are arranged at the outer ends of one mixing rod, and the high-pressure nozzles are used for spraying high-pressure cement slurry; and a low-pressure nozzle located below the high-pressure nozzles is further arranged on the drill bit, and the low-pressure nozzle is used for spraying low-pressure cement slurry. The cement soil bamboo jointpile construction method mainly comprises the steps that (1) the power head drives the drill rod and the drill bit to sink into a soil layer; (2) the drill bit reaches the bottom of a pile, the high-pressure cement slurry is sprayed to the soil layer through the high-pressure nozzles, and upwards lifting and rotating are conducted till the designed height of a bamboo joint is reached; and (3) thelow-pressure cement slurry is sprayed to the soil layer through the low-pressure nozzle, meanwhile lifting and rotating and mixing through the mixing rods are conducted till the lower end of a secondbamboo joint is reached, the steps are repeated, and the bamboo joint pile is formed through spraying and mixing combination and switching.
为了解决水泥土搅拌桩桩径小、质量差、施工效率低等问题，本发明提供了一种水泥土竹节桩施工方法，基于竹节桩施工装置，竹节桩施工装置由钻杆、动力头、提升机构以及钻头组成，钻头上设置有搅拌杆，搅拌杆外端部设置有高压喷嘴，高压喷嘴用于喷射高压水泥浆，钻头上还设置有位于高压喷嘴下方的低压喷嘴，低压喷嘴用于喷射低压水泥浆；施工方法主要包括：1）动力头带动钻杆及钻头向下沉入土层；2）钻头到达桩底，通过高压喷嘴向土层喷射高压泥浆，同时向上提升旋转，直至竹节设计高度；3）通过低压喷嘴向土层喷射低压水泥浆，同时旋转提升、搅拌杆搅拌，直至第二竹节下端，重复上述步骤，通过喷搅结合及切换形成竹节桩。
Cement soil bamboo joint pile construction method
In order to solve the problems of small pile diameter, poor quality, low construction efficiency and the like of a cement soil mixing pile, the invention provides a cement soil bamboo joint pile construction method which is based on a bamboo joint pile construction device. The bamboo joint pile construction device is composed of a drill rod, a power head, a lifting mechanism and a drill bit. Mixing rods are arranged on the drill bit. High-pressure nozzles are arranged at the outer ends of one mixing rod, and the high-pressure nozzles are used for spraying high-pressure cement slurry; and a low-pressure nozzle located below the high-pressure nozzles is further arranged on the drill bit, and the low-pressure nozzle is used for spraying low-pressure cement slurry. The cement soil bamboo jointpile construction method mainly comprises the steps that (1) the power head drives the drill rod and the drill bit to sink into a soil layer; (2) the drill bit reaches the bottom of a pile, the high-pressure cement slurry is sprayed to the soil layer through the high-pressure nozzles, and upwards lifting and rotating are conducted till the designed height of a bamboo joint is reached; and (3) thelow-pressure cement slurry is sprayed to the soil layer through the low-pressure nozzle, meanwhile lifting and rotating and mixing through the mixing rods are conducted till the lower end of a secondbamboo joint is reached, the steps are repeated, and the bamboo joint pile is formed through spraying and mixing combination and switching.
为了解决水泥土搅拌桩桩径小、质量差、施工效率低等问题，本发明提供了一种水泥土竹节桩施工方法，基于竹节桩施工装置，竹节桩施工装置由钻杆、动力头、提升机构以及钻头组成，钻头上设置有搅拌杆，搅拌杆外端部设置有高压喷嘴，高压喷嘴用于喷射高压水泥浆，钻头上还设置有位于高压喷嘴下方的低压喷嘴，低压喷嘴用于喷射低压水泥浆；施工方法主要包括：1）动力头带动钻杆及钻头向下沉入土层；2）钻头到达桩底，通过高压喷嘴向土层喷射高压泥浆，同时向上提升旋转，直至竹节设计高度；3）通过低压喷嘴向土层喷射低压水泥浆，同时旋转提升、搅拌杆搅拌，直至第二竹节下端，重复上述步骤，通过喷搅结合及切换形成竹节桩。
Cement soil bamboo joint pile construction method
一种水泥土竹节桩施工方法
ZHOU GUANGQUAN (author) / YAO ZHANYONG (author) / ZHOU CHONG (author) / SHEN BIN (author) / WANG XINXIAN (author) / WANG ZHAOJUN (author)
2021-02-02
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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