up to the height of 0.6m; after rolling and compacting the soil to dense, a trough shall be cut to embed profile settlement pipes; the width of the trough is 20-30cm, the depth of the trough is up to the slab layer top surface. when backfilling the medium coarse sand up to 0.2m high, the settlement pipes shall be laid (in the settlement pipe and at the connection of the pipe, the indium steel wire rope shall be put inside for pulling the gauge head part). On the top of pipes the medium coarse sand shall be filled and compacted up to the rolling compaction surface. After settlement pipes are laid down,
0.5m×0.5m×0.95m lean concrete protection piers shall be available at both ends and observation stakes shall be installed at pipe orifices. It is
recommended to use C15 lean concrete to cast observation stakes with cross section of 0.5m×0.5m×1.0m. Semicircular wear-resisting stainless steel gauge head shall be embedded on pile top.
3. 沉降观测装置的具体埋设位置应符合设计要求，且埋设稳定。观测期间应
对观测装置采取有效的保护措施。The specific embedding position of settlement observation devices shall comply with design requirements and the embedment shall be stable. Effective protection measures shall be adopted for observation devices during observation period.
（三）观测精度observation accuracy
沉降水准的测量精度为±l mm，读数取位至0．1 mm；剖面沉降观测的精度不低于8 mm／30 m。The survey accuracy of the settlement water level is ±1 mm; the reading accuracy is 0.1 mm; and the survey accuracy of the profile settlement shall be ate lest 8 mm/30 m.
（四）沉降观测频度frequency of settlement observation
沉降观测的频次不低于一般路基的规定。当环境条件发生变化或数据异常时，应及时观测。The settlement observation frequency shall not be lower than general regulations for subgrade. When the environment conditions change or data is abnormal, observation shall be conducted in time.
日期：2007-01-09 Date:2007-01-09
翻译： Translated by: 芦丽萍，王瑾，朱荣，巩亚强 Sophy, Vivian, Michelle, Simon 审核 proofread
Page 36 of 85 （五）评估方法和判定标准assessment method and judgment standard
1. 评估工作应根据下列资料综合分析：assessment shall performed according
to following data:
（1） 过渡段不同结构物的基础沉降观测资料。Foundation settlement
observation data of different structures at transition sections.
（2） 过渡段区域的工程地质纵横断面图、设计图纸和说明书、沉降计算报
告(包括不同阶段的设计沉降值与时间的关系曲线)等相关设计资料。Relevant design data of transition sections such as engineering geological longitudinal and cross section drawings, design drawings and design descriptions, settlement calculation report (including designed settlement-time curve of different phases), etc.
（3） 施工过程、施工核查以及填料、级配、地基和压实检验情况等施工资
料。 Construction data such as construction process, construction check and inspection status of filling materials, gradation, foundation and compaction, etc.
（4） 施工质量控制过程和抽检情况等监理资料。Supervision data like
construction quality control process and status of sample inspection, etc. 2. 过渡段沉降的预测评估方法参照路基执行。Settlement assessment method
of transition section shall refer to that of subgrade.
3. 过渡段不同结构物间的预测差异沉降不应大于5 mm。预测沉降引起沿线路方向的折角不应大于1／1 000。The differential settlement of different structures at transition sections shall not exceed 5mm. the angle in alignment direction caused by the forecasted settlement shall not exceed 1/1000.
八、 组织与管理 organization and management
（一） 主要工作内容 main work content
1、 沉降监测基准网的布设、测量及成果处理，形成稳固可靠的沉降观测基准网；establishment, survey and results processing of the settlement monitoring reference net in order to form a stable and reliable settlement monitoring reference net; 2、 制定《基础工程沉降观测指导方案》；compile Guiding Scheme for Foundation Work Settlement Observation;
日期：2007-01-09 Date:2007-01-09
翻译： Translated by:
芦丽萍，王瑾，朱荣，巩亚强 Sophy, Vivian, Michelle, Simon
审核 proofread
Page 37 of 85 3、 按《基础工程沉降观测指导方案》要求制定《基础工程沉降观测实施方案》； compile Implemented Scheme for Foundation Work Settlement Observation according to requirements of Guiding Scheme for Foundation Work Settlement Observation; 4、 布设沉降观测点及观测断面，埋设观测元器件；沉降观测点及观测断面的沉降观测；install settlement observation points and settlement observation sections; embed observation elements; performing settlement observation of settlement observation points and settlement observation sections;
5、 沉降观测数据的处理、审核、汇总；processing, review and collection of settlement observation data;
6、 沉降变形图表的绘制、分析及沉降趋势预测；draw and analyze settlement deformation diagram, and predicate settlement tendency;
7、 无碴轨道铺设时机评估和相应工程措施建议。Assessment of slab track installation time and relevant engineering measures and recommendations.
（二）工作分工与职责 work split and responsibilities
1、 建设单位 the client
（1） 主要负责组织协调工作，组织协调勘察设计、施工、监理和咨询等单位实施。Mainly in charge of organization and coordination work; organize and coordinate the implementation of the design institutes, contractors, supervision units and consultancy unit.
（2） 组织阶段评估工作，负责对沉降观测技术方案、精度标准及沉降观测成果及评估报告的最终审核确认。Organize phase assessment work; in charge of the final review and confirmation for settlement observation technical schemes and accuracy standard, settlement observation results and assessment report.
（3） 检查、监督、协调、处理变形观测及评估工作中的有关问题。Check, supervise, coordinate and handle relevant problems during deformation observation and assessment work.
2、 咨询单位 consultancy unit
（1） 根据相关规定，制订沉降变形观测及评估的指导方案。Establishing guiding scheme for settlement and deformation observation and assessment according to relevant regulations.
（2） 负责观测及评估的技术指导和培训。In charge of the technical guidance and
日期：2007-01-09 Date:2007-01-09
翻译： Translated by:
芦丽萍，王瑾，朱荣，巩亚强 Sophy, Vivian, Michelle, Simon
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Page 38 of 85 training for observation and assessment.
（3） 协助业主进行组织阶段评估工作，负责对沉降观测技术方案、精度标准及沉降观测成果及评估报告的审核确认。Assist the Client to organize phase assessment work; in charge of review and confirmation for settlement observation technical schemes and accuracy standard, settlement observation results and assessment report.
3、 勘察设计单位 survey and design institutes
（1） 设计单位负责《基础工程沉降观测实施方案》的设计，提出变形观测断面、观测点布置、测量精度标准等设计要求；The design institutes are responsible for the design of Implemented Scheme for Foundation Work Settlement Observation and shall raise the design requirements like deformation observation sections, layout of observation points and survey accuracy standard, etc.
（2） 负责对沉降观测设计方案进行技术交底。Be responsible for technical interpretation of settlement observation design scheme.
（3） 提交线路设计纵断面图、工程地质纵横断面图、设计图纸和说明书；沉降变形计算报告（包括不同阶段的设计沉降值与时间的关系曲线）等。Submit the longitudinal alignment drawings, geological longitudinal and cross section drawings, design drawings and design descriptions, settlement calculation report (including designed settlement-time curve of different phases), etc.
（4） 负责现场配合指导施工单位的沉降观测工作；解决沉降观测过程中出现的技术问题；co-operate and guide the settlement observation work of contractors on site; solve problems occurred during settlement observation.
（5） 负责收集各施工单位沉降观测资料，对沉降观测资料进行分析和趋势预测，根据分析和预测结果提出相应的工程措施，提交各阶段的沉降观测及预测分析评估成果报告；collect settlement observation data of contractors; analyze the settlement observation data and predicate the tendency; propose relevant engineering measures according analysis and predicated results; submit the settlement observation and the predicated and analyzed assessment result report of different phases; 负责根据变形观测结果，对设计沉降计算进行实时修正，并将设计计算的结果提交建设单位。Perform real-time modification for designed settlement calculation according to deformation observation results and submit the calculation results to the
日期：2007-01-09 Date:2007-01-09
翻译： Translated by:
芦丽萍，王瑾，朱荣，巩亚强 Sophy, Vivian, Michelle, Simon
审核 proofread
Page 39 of 85 Client.
4、 施工单位 Contractor
（1） 施工单位是基础工程沉降观测的具体实施者。负责配备、组织沉降观测仪器和人员，负责沉降观测点及观测断面的埋设、观测，观测数据的预处理及观测质量评估；
Contractor is the specific implementer of foundation engineering settlement observation, which is in charge of equipping and organizing settlement observation machines and persons, in charge of laying and observing the settlement observation point and section, pre-handling observation data and evaluating observation quality. （2） 负责每月按规定时间提交满足要求的沉降观测资料给设计单位和旭普林公司；
In charge of submitting settlement observation data met demands to design units and Zublin Company in given time per month. （3） 配合设计单位制订变形观测实施方案。
Cooperate with design units to make deformation observation implement scheme. （4） 负责变形监测网的建立。
In charge of establishing deformation monitor net.
（5） 根据设计和本技术指南提出的相关要求，设置沉降变形观测点，进行沉降观测，并及时提交观测数据。
Set settlement deformation observation point, observe settlement and submit observation data in time according to related design requirements and this technical guide.
（6） 负责施工过程中的观测点及观测元器件等观测设施的保护，确保施工过程中不受扰动或破坏。
In charge of protecting observation equipments like observation point and observation facility during construction to ensure them not to be disturbed and destroyed.
5、 监理单位 Supervision Unit
（1） 监理单位是基础工程沉降观测实施的监控单位，对重要环节进行旁站监理。
Supervision unit which is monitor and control unit for foundation engineering
日期：2007-01-09 Date:2007-01-09
翻译： Translated by:
芦丽萍，王瑾，朱荣，巩亚强 Sophy, Vivian, Michelle, Simon
审核 proofread
Page 40 of 85