A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Crackless uplift pile and construction method thereof
The invention relates to the technical field of basement anti-floating, and discloses a crack-free uplift pile and a construction method thereof.The crack-free uplift pile comprises a pile body, prestressed tendons and end anchor heads, the prestressed tendons are arranged in the pile body in pairs, and the paired prestressed tendons are symmetrically distributed with the center line of the pile body as the axis; end anchor heads are arranged at the top ends of the prestressed tendons; the structure further comprises a bottom connecting rib and a first spiral rib, the bottom connecting rib is fixedly connected between the bottom ends of the prestressed ribs arranged in pairs, and the first spiral rib is arranged on the outer side of the bottom connecting rib in a winding mode. The pile body is compressed by prestress to increase the local compression bearing capacity of the pile body, and when the pile body floats, the prestress is released, so that the pile body is prevented from generating cracks; when the prestressed tendons are tensioned, the bottom connecting ribs can be attached to the condensed pile body to bear the anchoring effect of a traditional anchoring head, the anchoring reliability and safety are guaranteed, the concrete material characteristics of the pile body are fully utilized, overall pile body concrete compression is achieved, and the manufacturing cost is reduced.
本发明涉及地下室抗浮技术领域，公开了一种无裂缝抗拔桩及其施工方法，无裂缝抗拔桩包括桩体、预应力筋和端部锚头，预应力筋成对布置在桩体内，并且成对的预应力筋以桩体的中心线为轴对称分布，各预应力筋的顶端均布置有端部锚头；还包括底部连接筋和第一螺旋筋，底部连接筋固定连接在成对布置的预应力筋的底端之间，第一螺旋筋缠绕布置于底部连接筋的外侧。利用预应力压紧桩体来增加桩体的局部受压承载力，当桩体浮动时预应力释放，避免桩体产生裂缝；当预应力筋被张拉时，底部连接筋会贴合至已经凝结的桩体上，承担传统的锚固头的锚固作用，保证了锚固的可靠性和安全性，充分利用桩体的混凝土材料特性，实现桩体混凝土整体受压，减少了造价。
Crackless uplift pile and construction method thereof
The invention relates to the technical field of basement anti-floating, and discloses a crack-free uplift pile and a construction method thereof.The crack-free uplift pile comprises a pile body, prestressed tendons and end anchor heads, the prestressed tendons are arranged in the pile body in pairs, and the paired prestressed tendons are symmetrically distributed with the center line of the pile body as the axis; end anchor heads are arranged at the top ends of the prestressed tendons; the structure further comprises a bottom connecting rib and a first spiral rib, the bottom connecting rib is fixedly connected between the bottom ends of the prestressed ribs arranged in pairs, and the first spiral rib is arranged on the outer side of the bottom connecting rib in a winding mode. The pile body is compressed by prestress to increase the local compression bearing capacity of the pile body, and when the pile body floats, the prestress is released, so that the pile body is prevented from generating cracks; when the prestressed tendons are tensioned, the bottom connecting ribs can be attached to the condensed pile body to bear the anchoring effect of a traditional anchoring head, the anchoring reliability and safety are guaranteed, the concrete material characteristics of the pile body are fully utilized, overall pile body concrete compression is achieved, and the manufacturing cost is reduced.
本发明涉及地下室抗浮技术领域，公开了一种无裂缝抗拔桩及其施工方法，无裂缝抗拔桩包括桩体、预应力筋和端部锚头，预应力筋成对布置在桩体内，并且成对的预应力筋以桩体的中心线为轴对称分布，各预应力筋的顶端均布置有端部锚头；还包括底部连接筋和第一螺旋筋，底部连接筋固定连接在成对布置的预应力筋的底端之间，第一螺旋筋缠绕布置于底部连接筋的外侧。利用预应力压紧桩体来增加桩体的局部受压承载力，当桩体浮动时预应力释放，避免桩体产生裂缝；当预应力筋被张拉时，底部连接筋会贴合至已经凝结的桩体上，承担传统的锚固头的锚固作用，保证了锚固的可靠性和安全性，充分利用桩体的混凝土材料特性，实现桩体混凝土整体受压，减少了造价。
Crackless uplift pile and construction method thereof
一种无裂缝抗拔桩及其施工方法
WU YONGSHENG (author) / YANG SONGQING (author) / HE JINFU (author) / LI HONGBO (author) / LIU DONGMING (author) / GUO YONGZHI (author) / FENG DONGFANG (author) / LI HAO (author) / ZHAO PENG (author) / GE FU (author)
2024-08-13
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen