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(1 中冶成都勘察研究總院有限公司, 成都 610023; 2 成都天府國際生物城投資開發(fā)有限公司,成都 610219; 3 中國建筑西南設(shè)計研究院有限公司, 成都 610042)
摘要: 依托成都天府國際生物城污水處理廠 PSB 精軋螺紋鋼預(yù)應(yīng)力擴(kuò)大頭抗浮錨桿項目,介紹了 PSB 精軋螺紋鋼預(yù)應(yīng)力擴(kuò)大頭抗浮錨桿的結(jié)構(gòu)特點(diǎn)、施工工藝及施工方法。 探討了在西南泥巖地區(qū)采用 PSB 精軋螺紋鋼預(yù)應(yīng)力擴(kuò)大頭抗浮錨桿在提高錨桿錨固效果、提高錨桿承載力、施加預(yù)應(yīng)力控制錨桿裂縫以提錨桿耐久性等方面的實(shí)際效果。 研究結(jié)果表明:采用 PSB 精軋螺紋鋼筋節(jié)約了鋼筋用量,提高了單根錨桿承載力;PSB 精軋螺紋鋼筋預(yù)應(yīng)力擴(kuò)大頭抗浮錨桿在成都天府國際生物城污水處理廠項目的成功應(yīng)用,解決了泥巖地區(qū)基巖裂隙水豐富情況下采用普通錨桿容易失效問題;利用預(yù)應(yīng)力施工技術(shù)控制錨桿裂縫,解決了錨桿耐久性問題,且節(jié)省了工期、節(jié)約了成本,具有良好的社會效益。
關(guān)鍵詞: 擴(kuò)大頭抗浮錨桿; PSB 精軋螺紋鋼; 預(yù)應(yīng)力; 裂縫控制
中圖分類號:TU94 文獻(xiàn)標(biāo)志碼:A 文章編號:1002?848X(2022)14?0146?05
DOI:10?? 19701 / j?? jzjg?? LS210032
Engineering application of the pre?stressed anti?floating anchor with enlarged head project of PSB finishing rolling rebar
LUO Donglin1, LI Xinwei2, LIAO Hongye1, FENG Yuan3
(1 Chengdu Survey Geotechnical Research Institute Co. , Ltd. of MCC, Chengdu 610023, China; 2 Chengdu Tianfu International Bio?town Investment & Development Co. , Ltd. , Chengdu 610219, China; 3 China Southwest ArchitectureDesign And Research Institute Co. , Ltd. , Chengdu 610042, China)
Abstract:Based on the pre?stressed anti?floating anchor with enlarged head project of PSB finishing rolling rebar in the sewage treatment plant of Chengdu Tianfu International bio?town, the structural characteristics, construction technology and construction method of the pre?stressed anti?floating anchor with enlarged head project of PSB finishing rolling rebar were introduced. The practical effects of the pre?stressed anti?floating anchor with enlarged head project of PSB finishing rolling rebar in southwest mudstone area on improving the anchoring effect of anchor, improving the bearing capacity of anchor, and applying prestress to control anchor cracks to improve the durability of anchor were discussed. The results show that the use of PSB finishing rolled rebar saves the amount of reinforcement and improves the bearing capacity of single anchor rod. The successful application of the pre?stressed anti?floating anchor with enlarged head project of PSB finishing rolling rebar in the sewage treatment plant of Chengdu Tianfu International bio?town solves the problem of easy failure of ordinary anchor rod under the condition of abundant bedrock fissure water in mudstone area. The prestressed construction technology was used to control the crack of anchor rod, which solves the problem of anchor rod durability, saves the construction period and cost, and has good social benefits.
Keywords:anti?floating anchor with enlarged head; PSB finishing rolled screw steel; prestressed; crack control
第一作者:羅東林,學(xué)士,高級工程師,主要從事巖土工程施工,勘察設(shè)計及咨詢,Email:a13881808803@ 126. com。通信作者:李欣洧,學(xué)士,高級工程師,主要從事建筑工程咨詢、管理,Email:lixinwei@ cdbtgroup. com。[引用本文] 羅東林,李欣洧,廖宏業(yè),等. PSB 精軋螺紋鋼預(yù)應(yīng)力擴(kuò)大頭抗浮錨桿的工程應(yīng)用研究[J]. 建筑結(jié)構(gòu),2022,52(14):146?150,123. LUO Donglin,LI Xinwei,LIAO Hongye,et al. Engineering application of the pre?stressedanti?floating anchor with enlarged head project of PSB finishing rolling rebar[ J]. Building Structure,2022,52(14):146?150,123.
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