A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Anti-thaw-collapse pile foundation in high-temperature frozen soil region, construction method and bearing performance improving method thereof
The invention provides an anti-thaw-collapse pile foundation in a high-temperature frozen soil area, a construction method and a bearing performance improving method of the anti-thaw-collapse pile foundation, and relates to the technical field of pile foundations in frozen soil areas. The temperature of frozen soil around a pile is adjusted in a combined adjusting and controlling mode of prearranging a refrigerating device in a pile body and coating a refrigerating coating, so that the influence of warm and humid climate of the Tibet Plateau on the pile foundation is weakened, and the pile foundation is protected. The long-term service environment of the pile foundation is improved. And meanwhile, the bottom end of the pile body is provided with the expansion head structure protruding out of the peripheral wall of the pile body, so that the pile body is better anchored in a frozen soil foundation around the pile body, the bearing performance and the pulling resistance of the pile body are improved, the freezing pulling force brought by a movable layer is effectively relieved, and the stability and the reliability of the thaw collapse prevention pile foundation are guaranteed. In addition, a plurality of grooves are further formed in the peripheral wall of the pile body, the contact area between the pile body and the surrounding soil body is successfully increased, meshing and interlocking are formed through the grooves and the frozen soil on the peripheral side, the binding force between the pile body and the surrounding soil body is enhanced, and the freezing force effect is effectively improved.
本申请提供一种高温冻土区防融沉桩基、施工方法及其承载性能提升方法，涉及冻土区桩基技术领域，通过在桩体中预设制冷装置和涂刷制冷涂层的组合调控方式调节桩周冻土的温度，从而弱化青藏高原暖湿化气候对桩基的影响，改善桩基长期服役环境。同时，通过在桩体的底端设置一个凸出于桩体周壁的扩大头结构，使得桩体更好地锚固于桩周冻土地基中，提高了桩体的承载性能和抗拔能力，有效地缓解了活动层带来的冻拔力，保证了防融沉桩基的稳定性和可靠性。此外，桩体的周壁上还设置有多个凹槽，成功地增加了桩体与周围土体之间的接触面积，并通过凹槽与周侧的冻土形成咬合和互锁，增强了桩体与周围土体的结合力，有效提高了冻结力的作用。
Anti-thaw-collapse pile foundation in high-temperature frozen soil region, construction method and bearing performance improving method thereof
The invention provides an anti-thaw-collapse pile foundation in a high-temperature frozen soil area, a construction method and a bearing performance improving method of the anti-thaw-collapse pile foundation, and relates to the technical field of pile foundations in frozen soil areas. The temperature of frozen soil around a pile is adjusted in a combined adjusting and controlling mode of prearranging a refrigerating device in a pile body and coating a refrigerating coating, so that the influence of warm and humid climate of the Tibet Plateau on the pile foundation is weakened, and the pile foundation is protected. The long-term service environment of the pile foundation is improved. And meanwhile, the bottom end of the pile body is provided with the expansion head structure protruding out of the peripheral wall of the pile body, so that the pile body is better anchored in a frozen soil foundation around the pile body, the bearing performance and the pulling resistance of the pile body are improved, the freezing pulling force brought by a movable layer is effectively relieved, and the stability and the reliability of the thaw collapse prevention pile foundation are guaranteed. In addition, a plurality of grooves are further formed in the peripheral wall of the pile body, the contact area between the pile body and the surrounding soil body is successfully increased, meshing and interlocking are formed through the grooves and the frozen soil on the peripheral side, the binding force between the pile body and the surrounding soil body is enhanced, and the freezing force effect is effectively improved.
本申请提供一种高温冻土区防融沉桩基、施工方法及其承载性能提升方法，涉及冻土区桩基技术领域，通过在桩体中预设制冷装置和涂刷制冷涂层的组合调控方式调节桩周冻土的温度，从而弱化青藏高原暖湿化气候对桩基的影响，改善桩基长期服役环境。同时，通过在桩体的底端设置一个凸出于桩体周壁的扩大头结构，使得桩体更好地锚固于桩周冻土地基中，提高了桩体的承载性能和抗拔能力，有效地缓解了活动层带来的冻拔力，保证了防融沉桩基的稳定性和可靠性。此外，桩体的周壁上还设置有多个凹槽，成功地增加了桩体与周围土体之间的接触面积，并通过凹槽与周侧的冻土形成咬合和互锁，增强了桩体与周围土体的结合力，有效提高了冻结力的作用。
Anti-thaw-collapse pile foundation in high-temperature frozen soil region, construction method and bearing performance improving method thereof
高温冻土区防融沉桩基、施工方法及其承载性能提升方法
CHEN JIANBING (author) / ZHANG QI (author) / JIN LONG (author) / DONG YUANHONG (author) / ZHU DONGPENG (author) / ZHANG TIANQI (author) / PENG HUI (author) / WANG MINGTIAN (author) / DU HAOWEI (author) / LI ZIJUN (author)
2024-10-01
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
/
F03D
Windkraftmaschinen
,
WIND MOTORS
/
F25B
Kältemaschinen, Kälteanlagen oder Kälteverfahren
,
REFRIGERATION MACHINES, PLANTS, OR SYSTEMS
/
F28D
Wärmetauscher, soweit in keiner anderen Unterklasse vorgesehen, in denen die Wärmetauschmittel nicht in direkte Berührung miteinander kommen
,
HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
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