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【免费下载】T/CECS 117-2017 给水排水工程混凝土构筑物变形缝技术规范

  • 2026-11-11 12:15:40
【免费下载】T/CECS 117-2017 给水排水工程混凝土构筑物变形缝技术规范

   T/CECS 117-2017给水排水工程混凝土构筑物变形缝技术规范 为中国工程建设标准化协会团体标准,2017 年 6 月 27 日发布,2017 年 10 月 1 日实施,替代旧版 CECS 117:2000《给水排水工程混凝土构筑物变形缝设计规程》,由北京市市政工程设计研究总院有限公司主编,全国六大市政院联合参编,中国计划出版社出版,是水池、泵房、箱涵、渠道等给排水水工构筑物变形缝专项标准,同时覆盖设计、材料、构造、施工、验收全流程,区别于旧版仅侧重设计的定位,是市政给排水构筑物结构、防水专业高频引用规范。本规范适用于城镇、工业项目给水排水混凝土贮水池、管渠、泵房等构筑物的伸缩缝、沉降缝、防震缝;不适用于有强腐蚀、高温、高辐射等特殊工况构筑物,特殊环境变形缝方案需要专项论证,综合管廊可参照但优先执行管廊专项规范。

规范共 7 章 + 15 个附录,核心板块分为变形缝设置原则、材料性能、节点构造、施工与验收四大模块。基本规定明确三类变形缝设置触发条件:温度收缩设置伸缩缝、地基差异荷载突变设置沉降缝、抗震设防区域设置防震缝;明确伸缩缝最大间距、沉降缝设置位置、防震缝缝宽取值逻辑,区分地上、半地下、埋地水池的不同控制指标,对诱导缝(引发缝)给出适用条件,解决大型清水池、滤池长池体防裂设计痛点。

材料章节是本规范重点管控内容,统一止水带、填缝板、嵌缝密封料三大主材技术指标。橡胶止水带区分中埋式、外贴式、可卸式,规定拉伸强度、伸长率、压缩永久变形、耐水老化、耐酸碱指标,明确水池内水介质适配橡胶品类;填缝板要求低压缩回弹、耐水不腐烂;密封胶区分迎水面、背水面,规定粘结强度、位移能力、浸水耐久性,严禁普通建筑密封胶直接用于水池内迎水面变形缝,配套附录提供材料检测取样、相容性试验方法。

变形缝构造章节给出标准断面:缝宽按缝类型、结构厚度、沉降差分级选取;明确中埋止水带居中定位、转角加强、止水带接头搭接焊接要求;细化水池底板、池壁、顶板、与管道相交、转角、高低差位置的标准化防水节点,区分单道止水、双道止水适用场景,高地下水位、清水池等重要构筑物优先采用双道止水设防体系,对缝内填缝、嵌缝、保护层顺序作出统一规定,杜绝构造层次颠倒引发渗漏。

施工及验收板块填补旧版空白,明确止水带固定、混凝土浇筑保护、密封胶施工环境、基面处理、养护要求,规定隐蔽验收主控项目,止水带破损、接头不合格直接判定返工。对比 CECS117:2000,新版增加诱导缝、可卸止水构造、材料耐微生物腐蚀、施工质量验收条文,适配大型市政水厂、污水厂工程需求。

链接:https://pan.quark.cn/s/b6e2f5504011

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