0块支架预压方案.pdf

0#块预压示意图白米塘桥 0#块支架预压方案1、支架预压的目的、检查支架的安全性，确保施工安全；、消除地基非弹性变形和支架非弹性变形的影响，有利于桥面线形控制。支架搭设完经检查验收合格后，铺设纵横主梁及木方，对支架进行相当于1.2 倍箱梁自重的荷载预压，以检查支架的承载能力，减少和消除支架体系的非弹性变形及地基的沉降影响。支架压重材料采用相应重（1032 吨）的沙袋进行预压。2、支架预压部位及重量0#块中横梁处因位于墩柱顶，重量传递由墩柱砼承担，不需支架受力，可以不用预压。预压部位位于0#块悬臂段及翼缘板处，见附图。预压重量为：0#块砼方量-（横隔板砼方量-人孔砼方量）2.6t/m31.2 系数 =586m3-（6m 14.9m3m-1.2m1.8m3m 2 个）2.6t/m31.2系数 =1032吨；3、支架预压及加载方法、支架预压方法支架预压是为了消除地基的弹性及非弹性变形，确保支架的安全性。支架预压采用与实际 0#块重量 1.2 倍重的沙袋进行预压。、加载方法加载采用逐级加载。预压按总荷载的050%100%120%100%50%0 进行加载及卸载，检查各杆件焊缝有无开裂情况，同时记录加载施力和位移数据。加载比率（%）0 50 100 120 加载重量（t）0 430 860 1032 持荷时间（h）0 4 4 72 加载时注意控制加载速度，各点压重要均匀对称均衡进行。3、沉降监测、沉降监测方法沉降监测测量采用直接在搭好的支架上布置观测点，并用红油漆做好标记，观测点的布置应提前考虑预压时砼预制块摆放的位置，避免因预制块压盖住观测点。文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3在预压加载和卸载过程中对支架处的观测点要进行跟踪观测。预压前测量原始标高，预压过程中0、50%、100%级加载完成后需稳压4 小时进行观测，然后在进行下一级的加载；120%级加载完成后稳压4 小时进行观测，然后满载持荷 3 天，每天上午和下午需进行观测；3 天满载观测累计沉降量不大于3mm 时可认为预压稳定，可以报检进行卸载；卸载分为 100%、50%、0 级，每一级卸载完成后立即进行观测，并进行下一级的卸载。0#块支架预压观测点的布置分为支架上部和承台顶两个部分，其中支架上部两侧共布置 10 个观测点，承台顶沿四周共布置4 个观测点，具体详见附图。、施工预拱度的设置为了使梁在完成后达到规定的标高,箱梁底模板调整时要考虑设置预拱度。设置预拱度通常要考虑以下因素：梁自重产生的弹性变形1；支架以上垫块的压缩量2；支架在设计荷载作用下的弹性变形量3=H2-H1；支架在设计荷载作用下的非弹性变形量4=H0-H2；地基在设计荷载作用下的弹性变形量5=h2-h1；基础在设计荷载作用下的非弹性变形和6=h0-h2；预应力钢绞线张拉后引起的箱梁上拱度7；预应力损失引起的箱梁变形8。经预压后，其中 4、6 均已消除，在设置预拱度时只考虑1、2、3、5、7 和8。4、支架搭设和预压注意事项、支架搭设按照本方案设计所要求的材料和方法进行。支架基础牢固不下沉。、支架搭设方法要考虑拆除支架方便且安全。、支架搭设和预压过程中，设有专职安全员值班，一是随时检查处理支架搭设和预压时出现的变化，紧急情况及时向作业人员发出停止或撤离信号，并向上级单位领导报告；二是阻止非施工人员进入支架预压区以防发生意外。文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3文档编码:CT7L2Z9L2Y9 HT10G3M4T5H8 ZM6O2C8B2M3