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北京市地方标准编号：DB11/489-2016备案号：J13247-2016建筑基坑支护技术规程Technicalspecificationforretainingandprotectingofbuildingfoundationexcavation2016-08-10发布2016-12-01实施北京市住房和城乡建设委员会北京市质量技术监督局联合发布DB北京市地方标准建筑基坑支护技术规程Technicalspecificationforretainingandprotectingofbuildingfoundationexcavation编号：DB11/489-2016备案号：J13247-2016北京市勘察设计研究院有限公北京城建科技促进会批准部门：北京市质量技术监督局实施日期：2016年12月1日2016北京3关于发布北京市地方标准《建筑基坑支护技术规程》的通知京建发〔2016〕409号各区住房城乡建设委,各集团、总公司，各有关单位：根据北京市质量技术监督局《关于印发2014年北京市地方标准制修订项目计划的通知》（京质监标发〔2014〕36号）的要求，由北京城建科技促进会主编的《建筑基坑支护技术规程》已经北京市质量技术监督局批准，北京市质量技术监督局、北京市住房和城乡建设委员会共同发布，编号为DB11/489-2016，代替《建筑基坑支护技术规程》DB11/489-2007，自2016年12月1日起实施。同意第3.1.9条、第6.3.6条、第7.3.20条、第8.1.2条、第8.2.5条作为强制性条文，必须严格执行。该标准由北京市住房和城乡建设委员会、北京市质量技术监督局共同负责管理，由北京城建科技促进会负责解释工作。特此通知。北京市住房和城乡建设委员会2016年11月29日4关于同意北京市地方标准《建筑基坑支护技术规程》备案的函建标标备〔2016〕70号北京市住房和城乡建设委员会：你委《关于北京市工程建设地方标准建筑基坑支护技术规程、申请备案的函》（京建科标备便〔2015〕08号），收悉。经研究，同意该标准作为“中华人民共和国工程建设地方标准”备案，其备案号为：J13247-2016。其中，同意第3.1.9条、第6.3.6条、第7.3.20条、第8.1.2条、第8.2.5条作为强制性条文。该标准的备案号，将刊登在国家工程建设标准化信息网和近期出版的《工程建设标准化》刊物上。住房和城乡建设部标准定额司2016年4月6日DB11/489-20165前言本规程为强制性标准，其中第3.1.9，6.3.6，7.3.20，8.1.2，8.2.5等条（款）为强制性条文，必须严格执行。根据北京市质量技术监督局“关于印发2014年北京市地方标准制修订项目计划的通知”（京质监标发〔2014〕36号文）的要求，由北京城建科技促进会组织有关单位在经广泛调查研究，认真总结工程实践经验，参考有关标准，并广泛征求意见的基础上，对《建筑基坑支护技术规程》（DB11/489-2007）进行了全面修订。本规程的主要技术内容是：总则、术语和符号、基本规定、放坡、支挡式结构、土钉墙、地下水控制、基坑开挖、监测、附录A基坑支护设计文件内容、附录B锚杆钢腰梁按简支梁考虑时选型参考表、附录C渗透稳定性验算。其中附录A~附录C均为规范性附录。本规程修订的主要技术内容是：对原规程中强制性条文第3.1.2，3.1.4，3.1.5（1）、（2），3.1.6，3.1.7，3.7.3，3.7.4，3.7.5，3.7.6，3.7.8，3.7.13，6.3.6，6.4.2等条（款）进行了条款的部分内容调整或条款号调整；对第3章勘察要求进行了修改；将原规程第5章标题改为支挡式结构，增加了双排桩的设计内容，并对其他节的内容进行了补充；将原规程3.7节独立成章，作为第8章；新增第9章；删除了原规程中附录B、附录C内容，新增加附录B及附录C内容。本规程由北京市住房和城乡建设委员会和北京市质量技术监督局共同负责管理，由北京市住房和城乡建设委员会归口并负责组织实施。由北京城建科技促进会负责具体技术内容的解释。执行过程中如有意见和建议，请寄送至北京城建科技促进会（地址：北京市西城区广莲路1号北京建工大厦A座910室；邮政编码：100055）DB11/489-20166本规程主编单位：中国建筑科学研究院北京市勘察设计研究院有限公司北京建华建材技术研究院有限公司北京城建科技促进会本规程参编单位：中航勘察设计研究院有限公司中兵勘察设计研究院北京航天勘察设计研究院有限公司北京建材地质工程公司北京建工集团有限责任公司北京城建勘测设计研究院有限责任公司建设综合勘察研究设计院有限公司中基发展建设工程有限责任公司中国新兴建筑工程总公司中建二局第三建筑工程有限公司北京市地质工程设计研究院北京市地质工程公司北京金水源岩土工程有限公司北京中联勘工程技术有限责任公司北京新创展基础工程有限公司北京健安诚岩土工程有限公司本规程主要起草人员：张雁沈小克杨斌周与诚杨生贵孙保卫李虹（以下以姓氏笔画为序）马永琪习铁宏王笃礼王建明王秀丽王晓辉化建新石健闫德刚孙华波刘永勤齐如明何世鸣张德萍张明中张微张春和杨素春杨发兵邹登亮DB11/489-20167李钟李军李耀刚陈志辉陈树军汪一帆金淮郑庆峰赵杰伟徐教宇郭密文郭跃龙秦沛聂畅通蒋新民熊宗喜戴连双本规程主要审查人员：肖绪文张建民任庆英张晋勋刘军叶锋张钦喜DB11/489-20168目次1总则···········································································12术语和符号··································································22.1术语······································································22.2符号······································································33基本规定·····································································63.1设计原则································································63.2勘察要求······························································103.3支护结构选型························································123.4水平荷载······························································133.5质量检测······························································204放坡·········································································214.1放坡设计······························································214.2放坡施工······························································214.3质量检测······························································225支挡式结构································································235.1一般规定······························································235.2结构分析······························································245.3基坑稳定性验算·····················································245.4双排桩设计···························································305.5截面承载力计算·····················································325.6锚杆计算······························································335.7构造要求······························································375.8施工····································································415.9质量检测······························································45DB11/489-201696土钉墙······································································476.1一般规定······························································476.2设计····································································476.3施工····································································566.4质量检测······························································607地下水控制································································617.1一般规定······························································617.2截水····································································627.3降水····································································637.4集水明排······························································727.5回灌····································································738基坑开挖···································································758.1一般规定······························································758.2开挖···················································