Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
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 (Autor:in) / YAO ZHANYONG (Autor:in) / ZHOU CHONG (Autor:in) / SHEN BIN (Autor:in) / WANG XINXIAN (Autor:in) / WANG ZHAOJUN (Autor:in)
02.02.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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