50层住宅楼基坑监测.doc

50层住宅楼基坑监测 50层住宅楼基坑监测提要：围护桩变形：在基坑周边内埋设9根测斜管，测斜管的长度为15米，以观测围护桩在土方开挖及地下室施工期间的侧向变形 更多精品源自方案 50层住宅楼基坑监测 ⑴、本工程为一级基坑，应对下列项目进行监测： ①、水平位移和垂直位移：坡顶和支护结构顶部 ②、地表裂缝：坡顶向范围内 ③、地下水位观测：出水点和降水井 ④、支护结构内力：支护结构应力最大处 ⑤、锚杆拉力：外锚头 ⑥、分层沉降：层面分界处沉降标 ⑵、水平位移：在基坑周边内设置13个水平位移观测点，以观测基坑侧壁在土方开挖及地下室施工期间的侧向变形。 ⑶、沉降：在支护外侧，沿基坑周边每隔20～30m布置一个沉降观测点，观测地下室施工对周围土体的影响。沿重要地下管线或道路每15m布置一个沉降观测点。 ⑷、水位观测：在基坑外侧布置8个水位观测井，观测地下室施工降水对基坑周边水位的影响。 ⑸、围护桩变形：在基坑周边内埋设9根测斜管，测斜管的长度为15米，以观测围护桩在土方开挖及地下室施工期间的侧向变形。 ⑹、分层沉降观测：在基坑周边设置10组分层沉降标。每组沉降标内每一层设置一个标志。 ⑺、围护桩内力：应选择有代表性的围护桩与支撑，使用钢筋应变计测定围护桩与支撑的内力。 ⑻、观测频率：基坑开挖过程中，每周进行水平、沉降变形观测2～3次，地下室底板浇捣完毕后，水不、沉降变形观测每周一次。地下室施工至场地标高后，观测一次即告结束。遇到瀑雨或位移较大等异常情况时，应适当加密观测次数，具体由设计人员确定。 ⑼、监控预警值指标：基坑支护结构最大水平位移大于45㎜，或其水平位移速率已连续3天大于3㎜/d。 ⑽、观测报告：观测书面报告应在现场观测完成后24小时内提交业主及设计单位。 ⑾、观测项目在基坑开挖前应测得初始值，且应不少于2次。 ⑿、本支护结构安全保证时间为基坑开挖后九个月。 Measures for the routine management of moral education in Middle SchoolsMethod of conventional management of moral education in middle schoolFirst, the guiding ideology:School moral education is an organic whole of the whole education work, always adhere to the school adhere to the moral education, education for this product, and actively promote the quality education, the school building efficient curriculum system of moral education, moral education, improve the sense of attraction and appeal, enhance the moral education work for through and timeliness. Teach everyone, service education and management education, and school moral education work must be with family education and community education closely together, to form a concerted pattern, and strive to create a good atmosphere for education, and to promote the all-round development of students, to establish a scientific moral education full of vigor the For long-term mechanism.Two, the goal of moral education:To guide the students to form the correct world outlook, outlook on life, values, to cultivate students unity and mutual assistance, honest and trus