Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of pre-carbonized modified composite pile
The invention discloses a pre-carbonized modified composite pile. A pile hole is drilled at a set pile position; a stirring pile machine is started to a lifting state, and a curing agent is sprayed while an auger bit is lifted; the stirring pile machine repeatedly drills down and drills up, so that soil and the curing agent are stirred uniformly to form mixed soil; the bit is pulled out of the pile hole, the pile hole is closed, and CO2 gas with temperature higher than 50 DEG C is introduced into the pile hole; the mixed soil is pre-carbonized and modified to obtain modified soil; the modifiedsoil is crushed outside the pile hole, the curing agent is added, and the water content is adjusted to obtain mixed modified soil; the mixed modified soil is filled into the pile hole in layers and compacted, and then a permeable steel pipe is drilled into; the pile hole is closed, and CO2 is introduced into the pile hole through the permeable steel pipe; and after the mixed modified soil is carbonized, a gravel pile is made in the permeable steel pipe, and the gravel pipe is compounded with the mixed modified soil after carbonization to form a pile. Through the pre-carbonization modificationof soil of a soft soil layer, the engineering performance of the soil is improved, the strength of the pile is greatly improved, the pile-forming speed is high, and the project cost is low.
本发明公开了一种预碳化改性复合桩，在设定桩位上打桩孔；启动搅拌桩机至提升状态，并在螺旋钻头提升的同时喷固化剂；搅拌桩机反复下钻和提钻，使土体和固化剂搅拌均匀形成混合土体；钻头撤出桩孔，封闭桩孔并向桩孔内通入温度高于50℃的CO气体；使混合土体预碳化改性获得改性土；将改性土在桩孔外破碎，掺入固化剂、调整含水率获得混合改性土；将混合改性土分层填入桩孔并夯实，然后钻入透气钢管；将桩孔封闭，通过透气钢管向桩孔内注入CO；混合改性土碳化后，在透气钢管内做碎石桩，碎石桩与碳化后的混合改性土复合成桩。通过对软土层土体预碳化改性处理，提高土体工程性能，大幅提高桩体强度，而且成桩速度快，工程造价低。
Preparation method of pre-carbonized modified composite pile
The invention discloses a pre-carbonized modified composite pile. A pile hole is drilled at a set pile position; a stirring pile machine is started to a lifting state, and a curing agent is sprayed while an auger bit is lifted; the stirring pile machine repeatedly drills down and drills up, so that soil and the curing agent are stirred uniformly to form mixed soil; the bit is pulled out of the pile hole, the pile hole is closed, and CO2 gas with temperature higher than 50 DEG C is introduced into the pile hole; the mixed soil is pre-carbonized and modified to obtain modified soil; the modifiedsoil is crushed outside the pile hole, the curing agent is added, and the water content is adjusted to obtain mixed modified soil; the mixed modified soil is filled into the pile hole in layers and compacted, and then a permeable steel pipe is drilled into; the pile hole is closed, and CO2 is introduced into the pile hole through the permeable steel pipe; and after the mixed modified soil is carbonized, a gravel pile is made in the permeable steel pipe, and the gravel pipe is compounded with the mixed modified soil after carbonization to form a pile. Through the pre-carbonization modificationof soil of a soft soil layer, the engineering performance of the soil is improved, the strength of the pile is greatly improved, the pile-forming speed is high, and the project cost is low.
本发明公开了一种预碳化改性复合桩，在设定桩位上打桩孔；启动搅拌桩机至提升状态，并在螺旋钻头提升的同时喷固化剂；搅拌桩机反复下钻和提钻，使土体和固化剂搅拌均匀形成混合土体；钻头撤出桩孔，封闭桩孔并向桩孔内通入温度高于50℃的CO气体；使混合土体预碳化改性获得改性土；将改性土在桩孔外破碎，掺入固化剂、调整含水率获得混合改性土；将混合改性土分层填入桩孔并夯实，然后钻入透气钢管；将桩孔封闭，通过透气钢管向桩孔内注入CO；混合改性土碳化后，在透气钢管内做碎石桩，碎石桩与碳化后的混合改性土复合成桩。通过对软土层土体预碳化改性处理，提高土体工程性能，大幅提高桩体强度，而且成桩速度快，工程造价低。
Preparation method of pre-carbonized modified composite pile
一种预碳化改性复合桩的制备方法
CUI CHUNYI (Autor:in) / YU CHUNYANG (Autor:in) / YI NANGAI (Autor:in) / ZHAO JIUYE (Autor:in) / XIN YU (Autor:in) / LIANG ZHIMENG (Autor:in) / WANG BENLONG (Autor:in)
26.06.2020
Patent
Elektronische Ressource
Chinesisch
Preparation method of carbonized brick and carbonized brick
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