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A platform for research: civil engineering, architecture and urbanism
Foundation pit support structure and construction method thereof
The invention relates to a foundation pit support structure and a construction method thereof. The foundation pit support structure comprises cast-in-place piles. The foundation pit support structureis characterized by further comprising a positioning pile located on the earth-facing side of each cast-in-place pile, wherein the upper end of each positioning pile is connected with steel cables, and the other ends of the steel cables are connected with the upper end of each cast-in-place pile. When a foundation pit is excavated, the steel cables provide horizontal pull force for the cast-in-place piles, the pressure of a soil body borne by the cast-in-place piles in the excavation process of the foundation pit can be improved, so that the possibility of soil body collapse caused by dumpingof the cast-in-place piles and a formed support connected to the cast-in-place piles is reduced. The foundation pit is excavated twice in total, the foundation pit is excavated to the middle height ofeach cast-in-place pile at the first time, and the foundation pit is excavated to the lower end of each cast-in-place pile at the second time. In the two-time excavation process, the pull force provided by the steel cables to the cast-in-place piles provides higher stability to the cast-in-place piles. After the foundation pit is excavated, a pull force is provided for the support formed by the cast-in-place piles, and the displacement of the support caused by the soil body pressure is reduced.
本发明涉及一种基坑支护结构及其施工方法，其包括一种基坑支护结构，包括灌注桩，其特征在于，还包括位于灌注桩迎土侧的定位桩，所述定位桩的上端连接钢索，所述钢索的另一端连接灌注桩上端。开挖基坑时，钢索为灌注桩提供的水平拉力，可提高在基坑开挖过程中灌注桩承受的土体对灌注桩的压力，从而减低灌注桩及其连接成型的支护倾倒导致土体塌陷的可能。其中，基坑开挖总共分两次，第一次是将基坑开挖至灌注桩中部高度，第二次是将基坑开挖至灌注桩下端，这两次开挖过程，钢索对灌注桩提供的拉力为灌注桩提供了更高的稳定性。在基坑开挖后，为灌注桩构成的支护提供拉力，减小土体压力对造成支护的位移。
Foundation pit support structure and construction method thereof
The invention relates to a foundation pit support structure and a construction method thereof. The foundation pit support structure comprises cast-in-place piles. The foundation pit support structureis characterized by further comprising a positioning pile located on the earth-facing side of each cast-in-place pile, wherein the upper end of each positioning pile is connected with steel cables, and the other ends of the steel cables are connected with the upper end of each cast-in-place pile. When a foundation pit is excavated, the steel cables provide horizontal pull force for the cast-in-place piles, the pressure of a soil body borne by the cast-in-place piles in the excavation process of the foundation pit can be improved, so that the possibility of soil body collapse caused by dumpingof the cast-in-place piles and a formed support connected to the cast-in-place piles is reduced. The foundation pit is excavated twice in total, the foundation pit is excavated to the middle height ofeach cast-in-place pile at the first time, and the foundation pit is excavated to the lower end of each cast-in-place pile at the second time. In the two-time excavation process, the pull force provided by the steel cables to the cast-in-place piles provides higher stability to the cast-in-place piles. After the foundation pit is excavated, a pull force is provided for the support formed by the cast-in-place piles, and the displacement of the support caused by the soil body pressure is reduced.
本发明涉及一种基坑支护结构及其施工方法，其包括一种基坑支护结构，包括灌注桩，其特征在于，还包括位于灌注桩迎土侧的定位桩，所述定位桩的上端连接钢索，所述钢索的另一端连接灌注桩上端。开挖基坑时，钢索为灌注桩提供的水平拉力，可提高在基坑开挖过程中灌注桩承受的土体对灌注桩的压力，从而减低灌注桩及其连接成型的支护倾倒导致土体塌陷的可能。其中，基坑开挖总共分两次，第一次是将基坑开挖至灌注桩中部高度，第二次是将基坑开挖至灌注桩下端，这两次开挖过程，钢索对灌注桩提供的拉力为灌注桩提供了更高的稳定性。在基坑开挖后，为灌注桩构成的支护提供拉力，减小土体压力对造成支护的位移。
Foundation pit support structure and construction method thereof
一种基坑支护结构及其施工方法
YE XIONGWEI (author) / FU WEI (author) / JIN XIAOGENG (author) / GUO LIANGBIN (author) / YUAN SHENGYI (author) / HONG JIELONG (author) / NI MI (author) / MU KAIYUAN (author)
2020-09-18
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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