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A platform for research: civil engineering, architecture and urbanism
Integrated combined cofferdam with low water resistance ratio on soft soil foundation and construction method of integrated combined cofferdam
The invention discloses a low-water-resistance-ratio integrated combined cofferdam on a soft soil foundation and a construction method of the low-water-resistance-ratio integrated combined cofferdam. The low-water-resistance-ratio integrated combined cofferdam is of a bagged sand, steel pipe pile and inner support structure. On one hand, in the direction of the cross section, each layer of woven bag is divided into three independent grid bins which are sewn into a whole, the woven bags at the grid bins and the full-length woven bags are tightly sewn at equal strength, and the situation of cavities or disengagement is not allowed, so that it is ensured that after the middles of the woven bags are cut by the steel pipe piles, the left part and the right part of the woven bags are still complete closed bodies. The outer side of the cofferdam is subjected to multi-stage riprap back pressure, and the cofferdam can keep overall stability after the woven bags are cut. And on the other hand, after the steel pipe piles are constructed, the piles have a lateral restraining effect on deformation of the cofferdam, the bagged sand on the outer side can only generate vertical settlement deformation along the interfaces of the steel pipe piles, the whole cofferdam system is still established, and therefore the purpose of effectively reducing the width of the cross section of the cofferdam on the soft soil foundation can be achieved.
本发明公开了一种软土地基上低阻水比的一体式组合围堰及其施工方法，为袋装砂+钢管桩+内支撑结构形式。一方面，在横断面方向，每一层编织袋分三个彼此独立的格仓并缝制成一个整体，格仓处的编织袋与通长编织袋等强度密缝，不允许出现空洞或脱开情况，以确保编织袋中间被钢管桩割破后左右两部分编织袋依然为各自完整的封闭体。围堰外侧多级抛石反压，编织袋被割破后围堰能够保持整体稳定。另一方面，钢管桩施工后，桩对围堰的变形起到侧向约束作用，外侧袋装砂只能产生沿钢管桩界面的竖向沉降变形，整个围堰体系仍然成立，从而可达到在软土地基上有效减小围堰横断面宽度的目的。
Integrated combined cofferdam with low water resistance ratio on soft soil foundation and construction method of integrated combined cofferdam
The invention discloses a low-water-resistance-ratio integrated combined cofferdam on a soft soil foundation and a construction method of the low-water-resistance-ratio integrated combined cofferdam. The low-water-resistance-ratio integrated combined cofferdam is of a bagged sand, steel pipe pile and inner support structure. On one hand, in the direction of the cross section, each layer of woven bag is divided into three independent grid bins which are sewn into a whole, the woven bags at the grid bins and the full-length woven bags are tightly sewn at equal strength, and the situation of cavities or disengagement is not allowed, so that it is ensured that after the middles of the woven bags are cut by the steel pipe piles, the left part and the right part of the woven bags are still complete closed bodies. The outer side of the cofferdam is subjected to multi-stage riprap back pressure, and the cofferdam can keep overall stability after the woven bags are cut. And on the other hand, after the steel pipe piles are constructed, the piles have a lateral restraining effect on deformation of the cofferdam, the bagged sand on the outer side can only generate vertical settlement deformation along the interfaces of the steel pipe piles, the whole cofferdam system is still established, and therefore the purpose of effectively reducing the width of the cross section of the cofferdam on the soft soil foundation can be achieved.
本发明公开了一种软土地基上低阻水比的一体式组合围堰及其施工方法，为袋装砂+钢管桩+内支撑结构形式。一方面，在横断面方向，每一层编织袋分三个彼此独立的格仓并缝制成一个整体，格仓处的编织袋与通长编织袋等强度密缝，不允许出现空洞或脱开情况，以确保编织袋中间被钢管桩割破后左右两部分编织袋依然为各自完整的封闭体。围堰外侧多级抛石反压，编织袋被割破后围堰能够保持整体稳定。另一方面，钢管桩施工后，桩对围堰的变形起到侧向约束作用，外侧袋装砂只能产生沿钢管桩界面的竖向沉降变形，整个围堰体系仍然成立，从而可达到在软土地基上有效减小围堰横断面宽度的目的。
Integrated combined cofferdam with low water resistance ratio on soft soil foundation and construction method of integrated combined cofferdam
一种软土地基上低阻水比的一体式组合围堰及其施工方法
HUANG XUEYANG (author) / LIU LIYING (author) / YANG CHUNSHAN (author) / CHEN WENMING (author) / WANG CHUANZHI (author) / MA HUI (author)
2023-06-13
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
Combined cofferdam and construction method of combined cofferdam
| European Patent Office | 2023