Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Pile foundation construction method based on karst geologic structure
The invention relates to the field of grouting construction, in particular to a pile foundation construction method based on a karst geologic structure, which comprises the following steps of: 1, drilling a plurality of pile holes in a karst area, and keeping the distance between adjacent pile holes to be 2m-3m; 2, concrete is injected into the pile hole and solidified into a friction pile; 3, after the concrete is solidified into the friction pile, the grouting pipe is dredged with high-pressure water within 7-8 h; 4, after all the friction piles are formed and the strength of the friction piles reaches 70% or above, grouting operation is conducted; during grouting, grouting holes in the same position are subjected to alternate and equivalent grouting, when no grouting pressure is detected, an intermittent grouting mode is adopted, and the pile end intermittent grouting time is 5-6 h; 5, when the total grouting amount and the grouting pressure both meet the design requirements, grouting can be stopped; and 6, after the load detection of the friction piles reaches the standard, raft plates are poured on the tops of all the friction piles in the same karst area. By implementing the scheme, the problem that the friction pile located in the karst area settles is solved.
本发明涉及注浆施工领域，具体涉及一种基于分布有岩溶地质结构的桩基施工方法，骤1：在岩溶区域钻若干桩孔，相邻桩孔之间的间距为2m‑3m；步骤2：对桩孔注入混凝土，并使其凝固成摩擦桩；步骤3：当混凝土凝固成摩擦桩后7‑8h内用高压水疏通注浆管；步骤4：当所有摩擦桩成桩后且摩擦桩的强度达到70％以上后进行注浆操作；注浆时相同位置的注浆孔进行轮流且等量注浆的方式，当检测到无注浆压力时，采用间歇式注浆方式，桩端间歇注浆时间为5‑6h；步骤5：当注浆总量和注浆压力均达到设计要求可终止注浆；步骤6：当摩擦桩载荷检测达标后，在同一岩溶区域的所有摩擦桩的顶部浇筑筏板。通过实施本方案，解决了位于岩溶区域的摩擦桩发生沉降的问题。
Pile foundation construction method based on karst geologic structure
The invention relates to the field of grouting construction, in particular to a pile foundation construction method based on a karst geologic structure, which comprises the following steps of: 1, drilling a plurality of pile holes in a karst area, and keeping the distance between adjacent pile holes to be 2m-3m; 2, concrete is injected into the pile hole and solidified into a friction pile; 3, after the concrete is solidified into the friction pile, the grouting pipe is dredged with high-pressure water within 7-8 h; 4, after all the friction piles are formed and the strength of the friction piles reaches 70% or above, grouting operation is conducted; during grouting, grouting holes in the same position are subjected to alternate and equivalent grouting, when no grouting pressure is detected, an intermittent grouting mode is adopted, and the pile end intermittent grouting time is 5-6 h; 5, when the total grouting amount and the grouting pressure both meet the design requirements, grouting can be stopped; and 6, after the load detection of the friction piles reaches the standard, raft plates are poured on the tops of all the friction piles in the same karst area. By implementing the scheme, the problem that the friction pile located in the karst area settles is solved.
本发明涉及注浆施工领域，具体涉及一种基于分布有岩溶地质结构的桩基施工方法，骤1：在岩溶区域钻若干桩孔，相邻桩孔之间的间距为2m‑3m；步骤2：对桩孔注入混凝土，并使其凝固成摩擦桩；步骤3：当混凝土凝固成摩擦桩后7‑8h内用高压水疏通注浆管；步骤4：当所有摩擦桩成桩后且摩擦桩的强度达到70％以上后进行注浆操作；注浆时相同位置的注浆孔进行轮流且等量注浆的方式，当检测到无注浆压力时，采用间歇式注浆方式，桩端间歇注浆时间为5‑6h；步骤5：当注浆总量和注浆压力均达到设计要求可终止注浆；步骤6：当摩擦桩载荷检测达标后，在同一岩溶区域的所有摩擦桩的顶部浇筑筏板。通过实施本方案，解决了位于岩溶区域的摩擦桩发生沉降的问题。
Pile foundation construction method based on karst geologic structure
一种基于分布有岩溶地质结构的桩基施工方法
YAN CHUNYONG (Autor:in) / AO JUN (Autor:in) / PAN WEI (Autor:in) / WEI HONGLIANG (Autor:in) / CHENG SHANCHAO (Autor:in) / LIU DALIN (Autor:in) / WANG SHENGQI (Autor:in)
18.08.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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