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A platform for research: civil engineering, architecture and urbanism
Drilling grouting composite prefabricated dumbbell pile and construction method thereof
The invention relates to the technical field of composite prefabricated concrete piles, in particular to a drilling grouting composite prefabricated dumbbell pile and a construction method thereof. Comprising prefabricated dumbbell piles and grouting materials filling gaps between the prefabricated piles and hole walls, the prefabricated dumbbell piles can be formed by splicing a plurality of prefabricated dumbbell pile sections according to different lengths, firstly, holes are formed in advance through a mechanical drilling machine, the diameter of the formed holes is equal to the diameter of diameter expansion connecting sections of the prefabricated dumbbell piles, and the prefabricated dumbbell piles are sunk; and pouring cement paste or a cement soil grouting material into the hole so as to completely fill a gap between the precast pile body and the hole wall. The vertical bearing capacity of the single precast pile can be remarkably improved by fully utilizing the pile side friction resistance and the pile bottom end resistance through the precast dumbbell pile and the grouting material for filling the gap between the precast pile body and the hole wall; according to the construction method of firstly forming the hole and then sinking the prefabricated dumbbell pile, the pile sinking difficulty is reduced, meanwhile, the influence of pile deviation on the pile forming quality of the composite prefabricated pile is avoided, the construction quality of the composite prefabricated pile can be improved, and the advantages are obvious.
本发明涉及复合预制混凝土桩技术领域，具体涉及一种钻孔灌浆复合预制哑铃桩及其施工方法。包括预制哑铃桩和填充预制桩与孔壁间隙的灌浆料，预制哑铃桩可根据不同长度由多节预制哑铃桩段相互拼接而成，首先由机械钻机预先成孔，成孔直径等于预制哑铃桩扩直径连接段直径，沉入预制哑铃桩，再往孔内灌入水泥浆或水泥土灌浆料，以完全填充预制桩身与孔壁间隙。本发明能够通过预制哑铃桩和填充预制桩身与孔壁间隙的灌浆料充分利用桩侧摩阻力及桩底端阻力，显著提高预制桩单桩竖向承载力；先成孔后沉入预制哑铃桩的施工方法，降低了沉桩难度，同时避免了桩偏位对复合预制桩成桩质量的影响，提能够升复合预制桩施工质量，优势明显。
Drilling grouting composite prefabricated dumbbell pile and construction method thereof
The invention relates to the technical field of composite prefabricated concrete piles, in particular to a drilling grouting composite prefabricated dumbbell pile and a construction method thereof. Comprising prefabricated dumbbell piles and grouting materials filling gaps between the prefabricated piles and hole walls, the prefabricated dumbbell piles can be formed by splicing a plurality of prefabricated dumbbell pile sections according to different lengths, firstly, holes are formed in advance through a mechanical drilling machine, the diameter of the formed holes is equal to the diameter of diameter expansion connecting sections of the prefabricated dumbbell piles, and the prefabricated dumbbell piles are sunk; and pouring cement paste or a cement soil grouting material into the hole so as to completely fill a gap between the precast pile body and the hole wall. The vertical bearing capacity of the single precast pile can be remarkably improved by fully utilizing the pile side friction resistance and the pile bottom end resistance through the precast dumbbell pile and the grouting material for filling the gap between the precast pile body and the hole wall; according to the construction method of firstly forming the hole and then sinking the prefabricated dumbbell pile, the pile sinking difficulty is reduced, meanwhile, the influence of pile deviation on the pile forming quality of the composite prefabricated pile is avoided, the construction quality of the composite prefabricated pile can be improved, and the advantages are obvious.
本发明涉及复合预制混凝土桩技术领域，具体涉及一种钻孔灌浆复合预制哑铃桩及其施工方法。包括预制哑铃桩和填充预制桩与孔壁间隙的灌浆料，预制哑铃桩可根据不同长度由多节预制哑铃桩段相互拼接而成，首先由机械钻机预先成孔，成孔直径等于预制哑铃桩扩直径连接段直径，沉入预制哑铃桩，再往孔内灌入水泥浆或水泥土灌浆料，以完全填充预制桩身与孔壁间隙。本发明能够通过预制哑铃桩和填充预制桩身与孔壁间隙的灌浆料充分利用桩侧摩阻力及桩底端阻力，显著提高预制桩单桩竖向承载力；先成孔后沉入预制哑铃桩的施工方法，降低了沉桩难度，同时避免了桩偏位对复合预制桩成桩质量的影响，提能够升复合预制桩施工质量，优势明显。
Drilling grouting composite prefabricated dumbbell pile and construction method thereof
一种钻孔灌浆复合预制哑铃桩及其施工方法
WU ZHONGHUI (author) / A YING (author) / YUAN YUAN (author) / ZHANG MING (author) / DENG JUAN (author) / LI JIANPING (author)
2023-09-08
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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