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(中機(jī)國際工程設(shè)計(jì)研究院有限責(zé)任公司， 長沙 410007)
［摘要］目前預(yù)應(yīng)力抗浮錨桿存在施工工藝復(fù)雜、滲水隱患大、工程造價高等問題，限制了其在工程中的運(yùn)用。介紹了一種全長壓力型后張預(yù)應(yīng)力抗浮錨桿，此預(yù)應(yīng)力抗浮錨桿通過在錨桿頂端設(shè)置預(yù)應(yīng)力傳遞裝置，將地下室底板受到的水浮力傳遞給錨桿；該預(yù)應(yīng)力傳遞裝置一方面為預(yù)應(yīng)力筋提供張拉平臺，另一方面承擔(dān)錨桿在地下室底板中的錨固。預(yù)應(yīng)力抗浮錨桿在地下室底板混凝土澆筑前完成張拉，保持了地下室底板的完整性，消除了滲水隱患。最后對此預(yù)應(yīng)力抗浮錨桿設(shè)計(jì)的關(guān)鍵技術(shù)進(jìn)行了研究。
［關(guān)鍵詞］預(yù)應(yīng)力抗浮錨桿；張拉反力；預(yù)應(yīng)力傳遞裝置；壓力型錨桿；局部受壓；抗沖切能力
中圖分類號：TU318 文獻(xiàn)標(biāo)識碼：A文章編號：1002-848X(2021)21-0007-04
Study on structural design of full-length compression post-tensioned prestressed anti-floating anchor
TAN Guangyu, JIANG Yaohua, FANG Weiming, GAO Mingyu, LI Na, SHI Fengtao, WANG Yuzan, XIAO Longjun
(China Machinery International Engineering Design & Research Institute Co., Ltd., Changsha 410007， China)
Abstract: At present, prestressed anti-floating anchor has problems such as complex construction technology, high water seepage hazards, and high engineering costs, which limit its application in engineering. A full-length compression post-tensioned prestressed anti-floating anchor was introduced. The prestressed anti-floatation anchor can transfer the water buoyancy of the basement floor to the anchor by setting a prestressed transmission device at the top of the anchor. On the one hand, the prestressed transmission device provides a tensioning platform for the prestressed reinforcement, and on the other hand, and it undertakes the anchoring in the basement floor. The tension of the prestressed anti-floating anchor was completed before concrete pouring of the basement floor, which maintains the integrity of the basement floor and eliminates the hidden danger of water seepage. Finally, the key technology of the prestressed anti-floating anchor design was studied.
Keywords:prestressed anti-floating anchor； tension reaction force； prestressed transmission device； compression anchorage； local compression； punching resistance capacity
作者簡介：譚光宇，碩士，教授級高級工程師，Email：371643439@qq.com。
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