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A platform for research: civil engineering, architecture and urbanism
Hole pile construction method under karst geological condition
The invention relates to a hole pile construction method under a karst geological condition. The hole pile construction method under the karst geological condition comprises the following steps that in the process of excavating rock soil on the ground to form a pile hole, when the pile hole is intersected with an underground karst cave, a retaining wall template is prepared, an underground karst cave opening intersected with the pile hole is covered by using the retaining wall template, then filler is filled on one side, close to the underground karst cave, of the retaining wall template, thefiller comprises concrete, a cofferdam is formed after the concrete is solidified, and then the rock soil continues to be excavated out to form the pile hole. By adopting the technical scheme of the hole pile construction method under the karst geological condition, supporting is carried out due to the fact that the retaining wall template is arranged in time in the pile hole excavation construction process, and reinforcement is carried out through the fact that the cofferdam is arranged, so that the phenomena of grout leakage and hole collapse are effectively avoided, the construction safetyis improved, the erosion effect of underground water on a pile foundation is blocked, the bearing capacity of the pile foundation structure is effectively guaranteed, the durability of the pile foundation is enhanced, meanwhile, the semi-rock semi-flowing soft plastic red clay is effectively prevented from flowing into the hole pile which is not completely formed, and smooth implementation of thehole pile construction work is guaranteed.
本发明涉及一种在溶岩地质条件下孔桩施工方法，在地面上挖掘出岩土形成桩孔的过程中，当桩孔与地下溶洞相交时，制备护壁模板，使用护壁模板封盖与桩孔相交的地下溶洞洞口处，然后向护壁模板接近地下溶洞一侧充填填充物，填充物包括混凝土，待混凝土凝固后形成围堰，再继续挖掘出岩土形成桩孔。采用本发明的技术方案，通过在桩孔挖掘施工过程中及时设置护壁模板进行支护，并通过设置围堰进行加固，有效避免出现漏浆、塌孔现象，提高了施工安全性，并且阻挡了地下水对桩基础的侵蚀作用，有效地保证了桩基础结构的承载力，使得桩基础耐久性加强，同时有效防止半岩半流动软塑红粘土涌入未完全成形的孔桩内，保证了孔桩施工工作的顺利开展。
Hole pile construction method under karst geological condition
The invention relates to a hole pile construction method under a karst geological condition. The hole pile construction method under the karst geological condition comprises the following steps that in the process of excavating rock soil on the ground to form a pile hole, when the pile hole is intersected with an underground karst cave, a retaining wall template is prepared, an underground karst cave opening intersected with the pile hole is covered by using the retaining wall template, then filler is filled on one side, close to the underground karst cave, of the retaining wall template, thefiller comprises concrete, a cofferdam is formed after the concrete is solidified, and then the rock soil continues to be excavated out to form the pile hole. By adopting the technical scheme of the hole pile construction method under the karst geological condition, supporting is carried out due to the fact that the retaining wall template is arranged in time in the pile hole excavation construction process, and reinforcement is carried out through the fact that the cofferdam is arranged, so that the phenomena of grout leakage and hole collapse are effectively avoided, the construction safetyis improved, the erosion effect of underground water on a pile foundation is blocked, the bearing capacity of the pile foundation structure is effectively guaranteed, the durability of the pile foundation is enhanced, meanwhile, the semi-rock semi-flowing soft plastic red clay is effectively prevented from flowing into the hole pile which is not completely formed, and smooth implementation of thehole pile construction work is guaranteed.
本发明涉及一种在溶岩地质条件下孔桩施工方法，在地面上挖掘出岩土形成桩孔的过程中，当桩孔与地下溶洞相交时，制备护壁模板，使用护壁模板封盖与桩孔相交的地下溶洞洞口处，然后向护壁模板接近地下溶洞一侧充填填充物，填充物包括混凝土，待混凝土凝固后形成围堰，再继续挖掘出岩土形成桩孔。采用本发明的技术方案，通过在桩孔挖掘施工过程中及时设置护壁模板进行支护，并通过设置围堰进行加固，有效避免出现漏浆、塌孔现象，提高了施工安全性，并且阻挡了地下水对桩基础的侵蚀作用，有效地保证了桩基础结构的承载力，使得桩基础耐久性加强，同时有效防止半岩半流动软塑红粘土涌入未完全成形的孔桩内，保证了孔桩施工工作的顺利开展。
Hole pile construction method under karst geological condition
一种在溶岩地质条件下孔桩施工方法
JIANG KUN (author) / LU HUA (author) / CHEN XIAOLIN (author) / LIU XUAN (author) / WAN TINGRONG (author) / ZHANG SIBIN (author) / QIN HE (author) / YUAN XIAO (author) / LIU YUE (author) / WEI XINFENG (author)
2020-08-18
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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