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A platform for research: civil engineering, architecture and urbanism
SMW method pile and grouting steel pipe supporting combined support construction method
The invention relates to the technical field of foundation pit support, and discloses a SMW method pile and grouting steel pipe supporting combined support construction method. The method comprises the following steps: 1) design and construction of a SMW method pile; 2) construction of steel pipes; 3) steel pipe grouting; 4) casting of a top beam; 5) sectionally excavating soil in layers; 6) construction of a preassemble type steel plate, a reinforcing bar cushion layer and a water-tight steel plate; on the basis of a SMW method pile support, the steel pipe for supporting an upper end of the SMW method pile is arranged, and the SMW method pile supports a side wall soil layer of the foundation pit; the other end of the steel pipe is embedded in the soil to form support to a top part of theSMW method pile, moreover, the other end of the steel pipe comprises a plurality of grout discharging holes, when cement grout is injected into the steel pipe through high pressure, the cement grout flows out through the grout discharging holes, the cement grout hardens the soil layer, thus, bearing capacity of the soil in such range is improved, supporting effect of the steel pipe to the SMW method pile is better, consequently, the supporting effect of the SMW method pile to the side wall soil layer of the foundation pit can be better, and a problem that a top of the foundation pit is liableto deform is solved.
本发明涉及基坑支护的技术领域，公开了SMW工法桩结合注浆钢管支撑支护施工方法，包括以下步骤：1)设计施工SMW工法桩；2)施工钢管；3)钢管注浆；4)浇筑冠梁；5)分层分段挖开土体；6)施工预装式钢板、呸筋垫层以及止水钢板；在SMW工法桩支护的基础上，设置用于支撑SMW工法桩上端的钢管，而SMW工法桩为基坑侧壁土层提供支撑；钢管的另一端嵌入土体，形成对SMW工法桩顶部的支撑，且钢管的另一端具有多个出浆孔，当对钢管通过高压注入水泥浆液时，水泥浆液通过出浆孔流出，水泥浆液将土层硬化，提高该范围内土体的承载力，使钢管对SMW工法桩的支撑效果更佳，从而使SMW工法桩对基坑侧壁土层的支撑效果更佳，解决了基坑坑顶易变形的问题。
SMW method pile and grouting steel pipe supporting combined support construction method
The invention relates to the technical field of foundation pit support, and discloses a SMW method pile and grouting steel pipe supporting combined support construction method. The method comprises the following steps: 1) design and construction of a SMW method pile; 2) construction of steel pipes; 3) steel pipe grouting; 4) casting of a top beam; 5) sectionally excavating soil in layers; 6) construction of a preassemble type steel plate, a reinforcing bar cushion layer and a water-tight steel plate; on the basis of a SMW method pile support, the steel pipe for supporting an upper end of the SMW method pile is arranged, and the SMW method pile supports a side wall soil layer of the foundation pit; the other end of the steel pipe is embedded in the soil to form support to a top part of theSMW method pile, moreover, the other end of the steel pipe comprises a plurality of grout discharging holes, when cement grout is injected into the steel pipe through high pressure, the cement grout flows out through the grout discharging holes, the cement grout hardens the soil layer, thus, bearing capacity of the soil in such range is improved, supporting effect of the steel pipe to the SMW method pile is better, consequently, the supporting effect of the SMW method pile to the side wall soil layer of the foundation pit can be better, and a problem that a top of the foundation pit is liableto deform is solved.
本发明涉及基坑支护的技术领域，公开了SMW工法桩结合注浆钢管支撑支护施工方法，包括以下步骤：1)设计施工SMW工法桩；2)施工钢管；3)钢管注浆；4)浇筑冠梁；5)分层分段挖开土体；6)施工预装式钢板、呸筋垫层以及止水钢板；在SMW工法桩支护的基础上，设置用于支撑SMW工法桩上端的钢管，而SMW工法桩为基坑侧壁土层提供支撑；钢管的另一端嵌入土体，形成对SMW工法桩顶部的支撑，且钢管的另一端具有多个出浆孔，当对钢管通过高压注入水泥浆液时，水泥浆液通过出浆孔流出，水泥浆液将土层硬化，提高该范围内土体的承载力，使钢管对SMW工法桩的支撑效果更佳，从而使SMW工法桩对基坑侧壁土层的支撑效果更佳，解决了基坑坑顶易变形的问题。
SMW method pile and grouting steel pipe supporting combined support construction method
SMW工法桩结合注浆钢管支撑支护施工方法
ZHANG CHENGWU (author) / LEI BIN (author) / ZUO RENYU (author) / HOU DEJUN (author) / ZHAO YUANYUAN (author) / ZHU YUQING (author) / SHA ZHENHUI (author) / HUANG TIANHE (author)
2020-08-07
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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