sA高边坡张拉验收试验报告.doc

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1、【精品文档】如有侵权，请联系网站删除，仅供学习与交流sA高边坡张拉验收试验报告.精品文档.福建省永安至武平高速公路A3合同段K27+550+770左侧边坡锚固工程张拉验收试验报告中铁九局A3合同段项目经理部2008年 月 日福建省永安至武平高速公路K27+550+770左侧边坡预应力锚索验收试验报告前 言该边坡设计最高约40米左右，自然边坡地形反坡；为类土质边坡，局部为岩质表层，边坡主体由全风化-弱风化花岗岩组成，集中程度高，；，在坡体中部设预应力锚固工程并增设宽平台，结合孔窗式护面墙工程处理。该边坡锚固工程为：在边坡第一、二、三级分别设置锚索框架防护；其中边坡第一级上排锚索长14m、下排锚索

2、长12m，锚固段均为8m，单孔锚索设计拉力700KN；边坡第二级上排锚索长14m、下排锚索长12m、锚固段均为8m、单孔锚索设计拉力700KN；边坡第三级上排锚索长16m、下排锚索长14m、锚固段均为8m，单孔锚索设计拉力700KN。本次试验点的选择根据该段边坡地质类别和锚索数量，依据省高指【2002】297号文件精神：“验收试验锚索（杆）数量不少于工程锚索（杆）总数的5%且不少与3根”，该段边坡根据普遍性和代表性，共选择了3孔做验收试验，具体位置及锚索长度详见附表01。附表01 K27+550+770段左侧边坡验收试验锚索基本参数孔号孔径（mm）设计锚索长（m）锚固段长度（m）岩层类别设计荷

3、载（KN）N54150128全风化弱风化花岗岩700N21150168全风化弱风化花岗岩700N45150148全风化弱风化花岗岩700一、 验收试验目的锚固工程验收试验目的是在于检验该锚固工程的施工质量是否达到设计要求，以确保边坡的安全。通过验收试验，可以获知锚索受力大于设计荷载时的短期锚固性能，以及满足设计条件时锚索的安全系数，验收试验完成并证明合格后，方能进行该边坡其他工程孔的锁定施工。二、 验收试验依据1、锚杆喷射混凝土支护技术规程（GB50086-2001）；2、福建省不良地质路段路堑边坡防护加固工程施工实施细则（试行）； 3、福建省高速公路边坡锚固工程施工技术暂行规定。 4、A3施

4、工设计相关图纸。三、验收试验方案1、试验孔的钻造与锚索制安为确保锚固工程不至于恶化边坡岩土工程条件和保证孔壁的粘结性能，钻孔采用无水干钻。钻进过程中对每个孔的地层变化、钻进状态（钻压、钻速）、地下水及一些特殊情况做了现场施工记录，锚孔钻造达到设计深度后，稳钻2分钟，防止孔底尖灭。在钻孔完成后，使用高压空气将孔内岩粉及水体清出孔外，以免降低水泥浆体与孔壁土体的粘结强度。锚索采用6根15.24mm低松弛无黏结钢铰线，强度级别为1860Mpa 。锚索编束前，确保每根钢铰线顺直，不扭不叉，排列均匀，严格按设计尺寸制作。钢铰线采用机械切割。锚索顶端接装导向帽，以便下锚顺利。锚索体每1.0m设置一个对中支

5、架。注浆管捆扎在锚索体中间，直到导向帽位置。锚孔注浆采用孔底反浆方式注浆，现场作好施工记录。采用压力分散型锚索,锚索编束由多单元锚索组成，每个单元锚索分别由两根等长无黏结钢铰线内锚于钢质承载体组成，钢铰线通过特制的挤压套和挤压簧对称的锚固于钢质承载体上，单根的连接强度大于200KN。钢质承载体采用45号钢材加工制作，其厚度不小于20mm 。对于压力分散型锚索的锚固段，不设紧箍环。每单元钢铰线用不同颜色做标记。反力装置采用钢筋混凝土C25砼。2、试验张拉设备采用YDCW1500型千斤顶、量程200mm和YBZ4-500型高压电动油泵。 3、锚头位移采用游标卡尺（量程200mm），结合百分表（量程

6、30mm）测量框架反力构件位移。4、根据试验要求，最大试验荷载为锚索设计荷载的1.5倍，验收试验应分级加荷，起始荷载为锚索设计荷载的30%，分级加荷值分别为设计荷载的0.5、0.75、1.0、1.2、1.33、1.5倍。整个试验连续进行逐级加载，前一级荷载稳定后，方可施加下一级荷载，直到最大试验荷载为止。每级观测时间为10min，在每级加荷等级观测时间内，测读锚头位移项目累计变位量不大于0.1mm 方可施加下一级荷载。否则延长观测时间，最后一级试验荷载也应维持10min,如果在历时10min内位移量超过1mm，则该荷载再维持50min并在15、20、25、30、45和60min时记录其伸长量，

7、锚索加荷等级与观测时间见锚索试验记录表（附后）。对已预张拉的锚索进行验收试验，卸荷后按以上规定分级加荷试验。四、验收标准、本试验各项技术指标及规程以中国建设标准化协会标准土层锚杆设计与施工规范（CECS2L：90）为准，参考不良地质路段路堑边坡防护加固工程施工实施细则（试行）、高速公路边坡锚固工程施工技术暂行规定。1、验收试验中，从50%设计荷载到最大试验荷载之间所测得的总位移量，应当超过该荷载范围内锚筋自由段长度预应力筋理论弹性伸长量的80%，且小于自由段与1/2锚固段长度之和的预应力筋的理论弹性伸长值。且锚筋实测伸长量与理论计算伸长量的误差不大于理论计算伸长量的6%。大量的工程实践证明，对

8、于土质或类土质及锚固破碎地层，考虑锚孔轴向压缩与锚固段孔壁剪切变型特性，其实际上限值偏大5-10。2、在最后一级荷载作用下的位移观测期内，锚头位移稳定即在10min内位移不超过1mm，或者2h内蠕变量不大于2mm。3、如果试验结果同时满足上述1、2两款条件，则认为验收试验锚索合格；如果发现有试验锚索不能同时满足上述1、2两款条件，则需增加抽样三孔锚索进行验收试验。直至验收试验锚索全部同时满足上述1、2两款条件，方可认为验收试验锚索合格。、理论伸长量计算：本次验收试验理论弹性伸长量计算式，依据“公路桥涵施工技术规范JTJ041-200.12.8.3”条规定计算。 L=PpL/ApEp式中：Pp预

9、应力筋的平均张拉力；L预应力筋的长度；Ap预应力筋的截面积；Ep预应力筋的弹性模量（N/mm2）；本次试验钢铰线：Ap取140 mm2，Ep取200N/mm2 五、试验结果分析1、本次试验，整个试验连续进行，逐级加载，前级荷载稳定后始可施加下一级荷载。直到最大试验荷载为止。在最后一级观测期内，锚头位移稳定，锚固体及框架等反力结构未拉压破坏，整个试验过程无异常现象。根据验收试验标准试验结果见附表02附表02 K27+550+770左侧边坡锚索试验结果汇总表孔 号锚索长度（m）锚固段长度（m）设计荷载（KN）80%理论伸长值（mm）50%-150%伸长值（mm ）自由段和1/2锚固段理论弹性伸长值

10、（mm）伸长量检验说明N541287004053.462.54053.462.5合格N211687006070.587.56070.587.5合格N451487005060.7755060.775合格六、试验资料及分析曲线试验记录表中提供了试验荷载（吨位及油压表读数），相应荷载下的锚头位移读数。根据记录表绘制的荷载Q（KN）-位移S（mm）曲线见附图，本次预应力锚索验收试验充分验证本工点锚索施工质量安全可靠、设计科学合理，达到边坡加固稳定的目的。七、附件：1、试验记录表2、鉴定证书3、各试验孔曲线图（英文版 ） Two regulations promulgated for implement

11、ation is in the party in power for a long time and the rule of law conditions, the implementation of comprehensive strictly strategic plan, implementation in accordance with the rules and discipline to manage the party, strengthen inner-party supervision of major initiatives. The two regulations sup

12、porting each other, the adhere to a positive advocate, focusing on morality is of Party members and Party leading cadres can see, enough to get a high standard; around the party discipline, disciplinary ruler requirements, listed as negative list, focusing on vertical gauge, draw the party organizat

13、ions and Party members do not touch the bottom line . Here, the main from four square face two party rules of interpretation: the first part introduces two party Revised regulations the necessity and the revision process; the second part is the interpretation of the two fundamental principles of the

14、 revision of laws and regulations in the party; the third part introduces two party regulations modified the main changes and needs to grasp several key problems; the fourth part on how to grasp the implementation of the two regulations of the party. and revised the necessity and revised history of

15、the CPC Central Committee the amendment to the Chinese Communist Party members and leading cadres honest politics several guidelines and column 1 by 2015 to strengthen party laws and regulations focus. Two party regulations revision work lasted a Years, pooling the wisdom of the whole party, ideolog

16、ical consensus, draw historical experience, respect for the wisdom of our predecessors, which reflects the unity of inheritance and innovation; follow the correct direction, grasp the limited goals, adhere to the partys leadership, to solve the masses of the people reflect a focus on the problem. Th

17、e new revision of the and , reflects the partys 18 and the eighth session of the third, the spirit of the fourth plenary session, reflecting the experience of studying and implementing the General Secretary Xi Jinping series of important speech, reflects the partys eighteen years comprehensive stric

18、tly practice. (a) revised two regulations of the party need of in based on revised, the promulgation and implementation of January 2010, to strengthen the construction of the contingent of leading cadres play an important role. But with the party to manage the party strictly administering the deepen

19、ing, has not been able to fully meet the actual needs. Content is too complicated, eight prohibition, 52 are not allowed to hard to remember, and also difficult to put into practice; the second is concisely positive advocated by the lack of prohibited provisions excessive, no autonomy requirements;

20、the third is banned terms and discipline law, both with the party discipline, disciplinary regulations repeat and Criminal law and other laws and regulations repeat; the fourth is to clean the theme is not prominent, not for the existing problems, and is narrow, only needle of county-level leading c

21、adres above. is in 1997 based on revision, in December 2003 the promulgation and implementation, to strengthen the construction of the party play very important role. Along with the development of the situation, which many provisions have been unable to fully meet the comprehensive strictly administ

22、ering the practice needs. One is Ji law, more than half of the provisions and criminal law and other countries laws and regulations Repetition; two is the political discipline regulations is not prominent, not specific, for violation of the party constitution, damage the authority of Party Constitut

23、ion of misconduct lack necessary and serious responsibility to pursue; third is the main discipline for the leading cadres, does not cover all Party members. Based on the above situation, need to and the two is likely to be more relevant regulations first amendment. By revising, really put the autho

24、rity of Party discipline, the seriousness in the party tree and call up the majority of Party members and cadres of the party constitution of party compasses party consciousness. (II) two party regulations revision process the Central Committee of the Communist Party of China attaches great importan

25、ce to two regulations revision . Xi Jinping, general books recorded in the Fifth Plenary Session of the eighth session of the Central Commission for Discipline Inspection, on the revised regulations made clear instructions. According to the central deployment, the Central Commission for Discipline I

26、nspection from 2014 under six months begin study two regulations revision. The Standing Committee of the Central Commission for Discipline Inspection 4 review revised. Comrade Wang Qishan 14 times held a special meeting to study two regulations revision, amendment clarifies the direction, major issu

27、es of principle, path and target, respectively held a forum will listen to part of the province (area) secretary of the Party committee, Secretary of the Discipline Inspection Commission, part of the central ministries and state organs Department The first party committee is mainly responsible for p

28、eople, views of experts and scholars and grassroots party organizations and Party members. Approved by the Central Committee of the Communist Party of China, on 7 September 2015, the general office of the Central Committee of the Party issued a notice to solicit the provinces (autonomous regions, mu

29、nicipalities) Party, the central ministries and commissions, state ministries and commissions of the Party (party), the General Political Department of the military, every 3 people organization of Party of two regulations revision opinion. Central Commission for Discipline Inspection of extensive so

30、licitation of opinions, careful study, attracting, formed a revised sent reviewers. In October 8 and October 12, Central Committee Political Bureau Standing Committee and the Political Bureau of the Central Committee After consideration of the two regulations revised draft. On October 18, the Centra

31、l Committee of the Communist Party of China formally issued two regulations. Can say, two laws amendment concentrated the wisdom of the whole party, embodies the party. Second, and revision of the basic principles of two party regulations revision work and implement the partys eighteen, ten eight pl

32、enary, the spirit of the Fourth Plenary Session of the Eleventh Central Committee and General Secretary Xi Jinping important instructions on the revised and , highlighting the ruling party characteristics, serious discipline, the discipline quite in front of the law, based on the current, a long-ter

33、m, advance as a whole, with Bu Xiuding independent and . Main principle is: first, adhere to the party constitution to follow. The constitution about discipline and self-discipline required specific, awaken the party constitution of party compasses party consciousness, maintaining the authority of t

34、he constitution. General Secretary Xi Jinping pointed out that no rules, no side round. Party constitution is the fundamental law, the party must follow the general rules. In early 2015 held the eighth session of the Central Commission for Discipline Inspection Fifth Plenary Session of the 16th Cent

35、ral Committee, Xi Jinping again pointed out that constitution is the party must follow the general rules, but also the general rules. the revision of the and is Method in adhere to the regulations established for the purpose of combining rule of virtue is to adhere to the party constitution as a fun

36、damental to follow, the constitution authority set up, wake up the party constitution and party rules the sense of discipline, the party constitution about discipline and self-discipline specific requirements. 4 second is to adhere to in accordance with the regulations governing the party and the pa

37、rty. The Party of rule of virtue de, mainly refers to the partys ideals and beliefs, excellent traditional style. The revised the closely linked to the self-discipline, insisting on the positive initiative, for all members, highlight the vital few, emphasized self-discipline, focusing on the moralit

38、y, and the majority of Party members and the ideological and moral standards. The revised Ji method separately, Ji, Ji Yan to Method, as a negative list, emphasizing the heteronomy, focusing on vertical gauge. Is this one high and one low, a positive reaction, the strict party discipline and practic

39、e results transformation for the integration of the whole party to observe moral and discipline requirements, for the majority of Party members and cadres provides benchmarking and ruler. Third, insist on to. In view of the problems existing in the party at the present stage, the main problems of Pa

40、rty members and cadres in the aspect of self-discipline and abide by the discipline to make clearly defined, especially the partys eighteen years strict political discipline and political rules, organization and discipline and to implement the central eight provisions of the spirit against the four

41、winds and other requirements into Disciplinary provisions. Not one pace reachs the designated position, focusing on in line with reality, pragmatic and effective. After the revision of major changes, major changes in the and modified and needs to grasp several key problems (a) adhere to according to

42、 regulations governing the party and party with morals in combination, for at the present stage, the leadership of the party members and cadres and Party members in existing main problems of self-discipline, put forward principles, requirements and specifications, showing Communists noble moral purs

43、uit, reflected at all times and in all over the world ethics from high from low 5 common requirements. One is closely linked to the self-discipline, removal and no direct relation to the provisions of . the second is adhere to a positive advocate, eight prohibition 52 are not allowed to about the co

44、ntent of the negative list moved into synchronization amendment . Three is for all the party members, will apply object from the leadership of the party members and cadres to expand to all Party members, fully embodies the comprehensive strictly required. The fourth is prominent key minority, seize

45、the leadership of the party members and cadres is the key, and put forward higher requirements than the ordinary Party members. Five is to simplify, and strive to achieve concise, easy to understand, easy to remember. The revised is the ruling Party since the first insists on a positive advocate for

46、All Party members and the self-discipline norms, moral declaration issued to all members of the party and the National Peoples solemn commitment. criterion of a clean and honest administration consists of 4 parts, 18, more than 3600 words. After the revision of the , a total of eight, 281 words, including lead, specification and Party member cadre clean fingered self-discipline norms, etc. Part 3 members low-cost clean and self-discipline, the main contents can be summarized as four must eight code. Lead part, reiterated on ideal and faith,