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A platform for research: civil engineering, architecture and urbanism
Prestressed pile of liquefied natural gas storage tank and production method of prestressed pile
The invention relates to a prestressed pile of a liquefied natural gas storage tank and a production method thereof, and belongs to the technical field of construction of foundations of liquefied natural gas storage tanks, the prestressed pile of the liquefied natural gas storage tank comprises a pile foundation, the pile foundation is a reinforced concrete pile and comprises a reinforcement cage and concrete poured on the periphery of the reinforcement cage, and a plurality of retard-bonded prestressed tendons are pre-buried in the pile foundation. A plurality of retard-bonded prestressed tendons are bound on the reinforcement cage through binding wires and are poured and buried by concrete; wherein the two ends of the retard-bonded prestressed tendon are arranged to be a fixed end and a tensioning end respectively, the fixed end is pre-buried in concrete of the pile foundation, and the tensioning end is exposed on the top of the pile foundation. The retard-bonded prestressed tendons are additionally arranged on the basis of the reinforced concrete pile, retard-bonded prestress is arranged in the area with the large bending moment in the pile foundation, due to the effect of prestress, compressive stress can be generated in the area with the large bending moment to balance tensile stress generated by the bending moment, generation and expansion of cracks can be effectively resisted, and the effect of the retard-bonded prestressed tendons is achieved. And the width of the pile top concrete crack does not exceed the standard.
本发明涉及一种液化天然气储罐预应力桩及其生产方法，属于液化天然气储罐基础施工技术领域，其中该液化天然气储罐预应力桩包括桩基，桩基为钢筋混凝土桩，包括钢筋笼及其周边浇筑的混凝土，桩基预埋有若干根缓粘结预应力筋，若干根缓粘结预应力筋通过扎丝绑扎在钢筋笼上，并且由混凝土浇筑填埋；其中，缓粘结预应力筋的两端分别设置为固定端和张拉端，固定端预埋在桩基的混凝土内，张拉端暴露在桩基顶部上。本发明在钢筋混凝土桩的基础上增设了缓粘结预应力筋，将缓粘结预应力布置在桩基内弯矩较大的区域，由于预应力的作用，可以在弯矩较大的区域产生压应力平衡弯矩产生的拉应力，能够有效地抵抗裂纹产生和扩展，确保桩顶混凝土裂缝宽度不超标。
Prestressed pile of liquefied natural gas storage tank and production method of prestressed pile
The invention relates to a prestressed pile of a liquefied natural gas storage tank and a production method thereof, and belongs to the technical field of construction of foundations of liquefied natural gas storage tanks, the prestressed pile of the liquefied natural gas storage tank comprises a pile foundation, the pile foundation is a reinforced concrete pile and comprises a reinforcement cage and concrete poured on the periphery of the reinforcement cage, and a plurality of retard-bonded prestressed tendons are pre-buried in the pile foundation. A plurality of retard-bonded prestressed tendons are bound on the reinforcement cage through binding wires and are poured and buried by concrete; wherein the two ends of the retard-bonded prestressed tendon are arranged to be a fixed end and a tensioning end respectively, the fixed end is pre-buried in concrete of the pile foundation, and the tensioning end is exposed on the top of the pile foundation. The retard-bonded prestressed tendons are additionally arranged on the basis of the reinforced concrete pile, retard-bonded prestress is arranged in the area with the large bending moment in the pile foundation, due to the effect of prestress, compressive stress can be generated in the area with the large bending moment to balance tensile stress generated by the bending moment, generation and expansion of cracks can be effectively resisted, and the effect of the retard-bonded prestressed tendons is achieved. And the width of the pile top concrete crack does not exceed the standard.
本发明涉及一种液化天然气储罐预应力桩及其生产方法，属于液化天然气储罐基础施工技术领域，其中该液化天然气储罐预应力桩包括桩基，桩基为钢筋混凝土桩，包括钢筋笼及其周边浇筑的混凝土，桩基预埋有若干根缓粘结预应力筋，若干根缓粘结预应力筋通过扎丝绑扎在钢筋笼上，并且由混凝土浇筑填埋；其中，缓粘结预应力筋的两端分别设置为固定端和张拉端，固定端预埋在桩基的混凝土内，张拉端暴露在桩基顶部上。本发明在钢筋混凝土桩的基础上增设了缓粘结预应力筋，将缓粘结预应力布置在桩基内弯矩较大的区域，由于预应力的作用，可以在弯矩较大的区域产生压应力平衡弯矩产生的拉应力，能够有效地抵抗裂纹产生和扩展，确保桩顶混凝土裂缝宽度不超标。
Prestressed pile of liquefied natural gas storage tank and production method of prestressed pile
一种液化天然气储罐预应力桩及其生产方法
CHEN TUANHAI (author) / XIAO LI (author) / YANGFAN (author) / ZHAO MINGRUI (author) / ZHEN CONG (author) / HUANG HUAN (author) / LI XINXIN (author) / ZHANG BOCHAO (author) / JI NINGNING (author) / XIA MENGYING (author)
2024-09-17
Patent
Electronic Resource
Chinese