A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
High-pressure jet grouting combined uplift pile for existing building and construction method
The invention discloses a high-pressure jet grouting combined uplift pile for an existing building and a construction method. The combined uplift pile comprises a high-pressure jet grouting pile and areinforcement body. The high-pressure jet grouting pile comprises a pile end, a pile body and a pile top. The reinforcement body comprises a steel pipe and a steel strand. One end of the steel pipe extends into the pile end, and the other end of the steel pipe reversely extends to be flush with the pile top and then is fixed to a bearing platform. The steel strand extends out of the top end of the steel pipe and then penetrates out of the bearing platform. The part, located in the pile top, of the steel strand is fixed to a lower anchor plate through a lower anchorage device. The part, penetrating out of the bearing platform, of the steel strand is fixed to an upper anchor plate through an upper anchorage device. According to the uplift pile combining the steel pipe and high-pressure jetgrouting, the characteristics of respective materials can be brought into play, large uplift bearing force can be provided, and the uplift pile is relatively economical compared with a traditional uplift pile. Prestress is applied to the steel pipe through the steel strand, the uplift pile is actively stressed, the vertical displacement of a foundation slab can be conveniently reduced, and structure cracking is avoided.
本发明公开了一种用于既有建筑上的高压旋喷组合抗拔桩及施工方法，该组合抗拔桩包括高压旋喷桩、加筋体，高压旋喷桩包括桩端、桩身和桩顶，加筋体包括钢管及钢绞线，钢管的一端延伸至桩端内，另一端反向延伸至与桩顶齐平后与承台固定，钢绞线伸出钢管的顶端后穿出承台，位于桩顶内的钢绞线由下锚具固定在下锚板上，穿出承台的钢绞线通过上锚具固定在在上锚板上。本发明通过钢管与高压旋喷组合的抗拔桩，可发挥各自材料的特性，可提供较大的抗拔承载力，比传统抗拔桩较为经济。通过钢绞线对钢管施加预应力，使抗拔桩主动受力，有利于减少基础底板的竖向位移，避免结构开裂。
High-pressure jet grouting combined uplift pile for existing building and construction method
The invention discloses a high-pressure jet grouting combined uplift pile for an existing building and a construction method. The combined uplift pile comprises a high-pressure jet grouting pile and areinforcement body. The high-pressure jet grouting pile comprises a pile end, a pile body and a pile top. The reinforcement body comprises a steel pipe and a steel strand. One end of the steel pipe extends into the pile end, and the other end of the steel pipe reversely extends to be flush with the pile top and then is fixed to a bearing platform. The steel strand extends out of the top end of the steel pipe and then penetrates out of the bearing platform. The part, located in the pile top, of the steel strand is fixed to a lower anchor plate through a lower anchorage device. The part, penetrating out of the bearing platform, of the steel strand is fixed to an upper anchor plate through an upper anchorage device. According to the uplift pile combining the steel pipe and high-pressure jetgrouting, the characteristics of respective materials can be brought into play, large uplift bearing force can be provided, and the uplift pile is relatively economical compared with a traditional uplift pile. Prestress is applied to the steel pipe through the steel strand, the uplift pile is actively stressed, the vertical displacement of a foundation slab can be conveniently reduced, and structure cracking is avoided.
本发明公开了一种用于既有建筑上的高压旋喷组合抗拔桩及施工方法，该组合抗拔桩包括高压旋喷桩、加筋体，高压旋喷桩包括桩端、桩身和桩顶，加筋体包括钢管及钢绞线，钢管的一端延伸至桩端内，另一端反向延伸至与桩顶齐平后与承台固定，钢绞线伸出钢管的顶端后穿出承台，位于桩顶内的钢绞线由下锚具固定在下锚板上，穿出承台的钢绞线通过上锚具固定在在上锚板上。本发明通过钢管与高压旋喷组合的抗拔桩，可发挥各自材料的特性，可提供较大的抗拔承载力，比传统抗拔桩较为经济。通过钢绞线对钢管施加预应力，使抗拔桩主动受力，有利于减少基础底板的竖向位移，避免结构开裂。
High-pressure jet grouting combined uplift pile for existing building and construction method
用于既有建筑上的高压旋喷组合抗拔桩及施工方法
ZHANG LINBO (author) / WANG QINGZHONG (author) / FANG YUNSONG (author)
2020-08-21
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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