垛式挡墙施工.doc

垛式挡墙施工1、施工工艺流程（后附流程图）2、施工方法：（1）基坑开挖挡墙基坑开挖应分段进行,基坑开挖前应进行测量放样,开挖方式根据基础地设计情况,选用放坡开挖边坡不得小于1：1,人工开挖基坑不得破坏坡面坡脚,开挖深度符合设计要求.文档收集自网络，仅用于个人学习（2）基底工作热层施工基坑开挖经检查标高及几何尺寸合格后方可换粗颗土及施做隔热层.（3）砼块预制砌块按设计要求提前预制,预制在暖季进行,砌块达到设计要求后运至施工现场,并合理推放.（4）垛式挡土砌筑垛式挡墙基坑处理完后,应立即施作挡墙基础及墙身减少基坑暴露时间.墙趾部分基坑在砌出地面立即回填.墙身分段分层砌筑,每一次砌筑1-1.5米.砌筑时必须两面立杆挂线或墙板挂线,外面线应顺直整齐,在砌筑过程中应经常校正线杆以保证各部尺寸符合图纸要求,砌件分层砌筑,砌筑上层时,不应振动下层,不得在砌体上抛掷、滚动、翻转或敲击石块.砌筑工作中断后进行砌筑时,应将砌层表面加以清扫和湿润.文档收集自网络，仅用于个人学习每层砌筑时,要自外圈定位行列开始,各砌层先砌外圈定位行列,然后砌筑里层,外圈砌块应与里层砌块交错连成一体,里外层分层一致,各层地砌块应安放稳固,砂浆饱满,粘结牢固,砂浆配比符合要求.文档收集自网络，仅用于个人学习墙趾部分基坑,在砌出地面后应立即回填,墙趾填土应与基面顺接坚固,夯实符合要求.墙趾背后隔热层施工应随墙体砌筑间隔进行,即墙身砌筑间隔（1-2天）隔热层施工墙身砌筑.隔热层施工应满足以下要求：A砌体每1m高时应施作保满隔热层,其与墙背贴密实.B墙背后回填时,底层排水孔标高处必须设隔水层.C墙内侧粗粒土回填分层夯实,每层松铺厚度不大于25cm,压实质量附合设计要求.D墙体顶部设粘土隔水层,其厚度不小于30cm.2.施工注意事项 （1）高含冰地段当墙在寒季施工,低含冰地段挡墙在暖季或冬季均可施工. （2）墙体背后回填作业时不得损伤墙体,施工时采用手扶式打夯机夯实. （3）路堑坡面暴露时间寒季不超过15天,夏季不超过7天,必要时要采取临保温隔热措施.（4）按设计要求预留排水孔,伸缩缝、沉降缝设置符合设计要求.（5）暖季挡土墙施工必须有可靠地支护措施,做好护壁、边坡热融滑坍伤人地预防工作.版权申明本文部分内容，包括文字、图片、以及设计等在网上搜集整理.版权为个人所有This article includes some parts, including text, pictures, and design. Copyright is personal ownership.文档收集自网络，仅用于个人学习用户可将本文地内容或服务用于个人学习、研究或欣赏，以及其他非商业性或非盈利性用途，但同时应遵守著作权法及其他相关法律地规定，不得侵犯本网站及相关权利人地合法权利.除此以外，将本文任何内容或服务用于其他用途时，须征得本人及相关权利人地书面许可，并支付报酬.文档收集自网络，仅用于个人学习Users may use the contents or services of this article for personal study, research or appreciation, and other non-commercial or non-profit purposes, but at the same time, they shall abide by the provisions of copyright law and other relevant laws, and shall not infringe upon the legitimate rights of this website and its relevant obligees. In addition, when any content or service of this article is used for other purposes, written permission and remuneration shall be obtained from the person concerned and the relevant obligee.文档收集自网络，仅用于个人学习转载或引用本文内容必须是以新闻性或资料性公共免费信息为使用目地地合理、善意引用，不得对本文内容原意进行曲解、修改，并自负版权等法律责任.文档收集自网络，仅用于个人学习Reproduction or quotation of the content of this article must be reasonable and good-faith citation for the use of news or informative public free information. It shall not misinterpret or modify the original intention of the content of this article, and shall bear legal liability such as copyright.文档收集自网络，仅用于个人学习版权申明本文部分内容，包括文字、图片、以及设计等在网上搜集整理.版权为个人所有This article includes some parts, including text, pictures, and design. Copyright is personal ownership.文档收集自网络，仅用于个人学习用户可将本文地内容或服务用于个人学习、研究或欣赏，以及其他非商业性或非盈利性用途，但同时应遵守著作权法及其他相关法律地规定，不得侵犯本网站及相关权利人地合法权利.除此以外，将本文任何内容或服务用于其他用途时，须征得本人及相关权利人地书面许可，并支付报酬.文档收集自网络，仅用于个人学习Users may use the contents or services of this article for personal study, research or appreciation, and other non-commercial or non-profit purposes, but at the same time, they shall abide by the provisions of copyright law and other relevant laws, and shall not infringe upon the legitimate rights of this website and its relevant obligees. In addition, when any content or service of this article is used for other purposes, written permission and remuneration shall be obtained from the person concerned and the relevant obligee.文档收集自网络，仅用于个人学习转载或引用本文内容必须是以新闻性或资料性公共免费信息为使用目地地合理、善意引用，不得对本文内容原意进行曲解、修改，并自负版权等法律责任.文档收集自网络，仅用于个人学习Reproduction or quotation of the content of this article must be reasonable and good-faith citation for the use of news or informative public fr