泥湾基坑防护检算资料20120603.doc

1、工程概况金温扩能改造工程标泥湾中桥中心里程DK148+412.400，全桥长111.67m，位于浙江省青田县鹤城镇泥湾村。新建金华台承台边与既有线1#墩承台边距离为11.01m（中-中），温州台与既有铁路中心线距离为22m（中-中），线路右侧为石门中学。新建桥梁临近营业线施工的施工范围，即DK148+356.565DK148+468.235范围内。2、基坑开挖防护方案经现场施工情况反映，基坑地质为粉土，质地松散，遇水易坍塌，且临近营业线，为保证营业线施工安全，承台基坑施工拟采用钢板桩围堰方案。考虑靠近营业线一侧进行钢板桩打入施工，可能危及营业线运营安全，故将靠近营业线一侧钢板桩改为挖孔防护桩，并在桩顶设圈梁连接。结合钢板桩的特性、施工方法等方面进行考虑，选用宽0.6m的ISP-钢板桩，ISP-钢板桩宽度适中，抗弯性能好。3、总体施工流程3.1、施工流程施工准备（挖孔防护桩可与桥梁桩基同时施做）测量定位导向桩制作打钢板桩土方开挖圈梁施工/钢板桩内支撑排水垫层钢筋绑扎模板安装混凝土浇筑回填土方钢板桩拔除3.2、钢板桩施工方法3.2.1、单桩逐根打入法施打钢板桩先由测量人员定出钢板桩围堰的轴线，清理障碍物至-1m。导向桩直接使用钢板桩，然后挂绳线作为导线，打桩时利用导线控制钢板桩的轴线。准备桩帽及送桩：打桩机吊起钢板桩，人工扶正就位。先用打拔桩机夹住钢板桩头部振动1min2min，使钢板桩周围的土松动，产生“液化”，减少土对桩的摩阻力，然后慢慢的往下负荷施压。3.2.2、拔桩先用打拔桩机夹住钢板桩头部振动1min2min，使钢板桩周围的土松动，产生“液化”，减少土对桩的摩阻力，然后慢慢的往上振拔。拔桩时注意桩机的负荷情况，发现上拔困难或拔不上来时，应停止拔桩，振动1min2min后再往下锤0.5m1.0m再往上振拔，如此反复可将桩拔出来。3.3、挖孔防护桩施工方法同桥梁桩基施工方法相同，在此不做介绍4防护桩计算4.1、钢板桩入土深度计算金华台、1#墩、2#墩钢板桩入土深度计算上部土质为淤泥质粉质黏土，内摩擦角，容重下部土质为粉质黏土，内摩擦角为，容重为上部土主动土压力系数下部土主动土压力系数下部土被动土压力系数根据建筑边坡工程技术规范公式（F.0.4-1） 得反弯点距地面距离Yn上部土的总主动土压力总被动土压力根据建筑边坡工程技术规范钢板桩入土最小深度Dmin为根据建筑边坡工程技术规范公式（F.0.3-3）钢板桩入土深度D施工时采用12m，入土深度为11m。钢围檩受力验算I40a工字钢 内支撑经计算，钢板桩围檩安全系数为1.4，内支撑安全系为4.8，能满足施工要求。4.2、挖孔防护桩入土深度计算挖孔防护桩直径为1m4.2.1、挖孔防护桩埋入深度验算4.2.1.1、金华台防护桩上部土的重度为17KN/m3，内摩擦角为20度上部土的总主动土压力下部土的内摩擦为25度，下部土的重度为13KN/m3。根据建筑边坡工程技术规范公式（F.0.4-1） 得反弯点距地面距离Yn总被动土压力根据建筑边坡工程技术规范得桩基入土最小深度Dmin为根据建筑边坡工程技术规范公式（F.0.3-3）桩基入土深度D防护桩桩长设计15m。防护桩顶设0.5m厚，宽1m的圈梁把钻孔桩连成一个整体。4.2.1.2、1#墩防护桩上部主动土压力下部被动土压力根据建筑边坡工程技术规范桩基入土最小深度Dmin为根据建筑边坡工程技术规范公式（F.0.3-3）桩基入土深度D防护桩桩长设计15m。防护桩顶设0.5m厚，宽1m的圈梁把钻孔桩连成一个整体。4.2.1.3、2#墩防护桩上部主动土压力下部被动土压力根据建筑边坡工程技术规范桩基入土最小深度Dmin为根据建筑边坡工程技术规范公式（F.0.3-3）桩基入土深度D防护桩桩长设计15m。防护桩顶设0.5m厚，宽1m的圈梁把钻孔桩连成一个整体。4.2.1.4、温州台防护桩靠近龙须岩隧道进口一侧防护桩入土深度验算查表得内摩擦角为20度上部土的重度为17KN/m3B点主动土压力上部土的总主动土压力下部土的内摩擦为25度，下部土的重度为13KN/m3。根据建筑边坡工程技术规范公式（F.0.4-1） 得反弯点距地面距离Yn总被动土压力根据建筑边坡工程技术规范得桩基入土最小深度Dmin为根据建筑边坡工程技术规范公式（F.0.3-3）桩基入土深度D防护桩桩长设计25m。防护桩顶设0.5m厚，宽1m的圈梁把钻孔桩连成一个整体。远离龙须岩隧道进口一侧防护桩入土深度验算上部主动土压力下部被动土压力根据建筑边坡工程技术规范桩基入土最小深度Dmin为根据建筑边坡工程技术规范公式（F.0.3-3）桩基入土深度D防护桩桩长设计15m。防护桩顶设0.5m厚，宽1m的圈梁把钻孔桩连成一个整体。（英文版 ） Two regulations promulgated for implementation 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 supporting each other, the < code > adhere to a positive advocate, focusing on morality is of Party members and Party leading cadres can see, enough to get a high standard; < rule > around the party discipline, disciplinary ruler requirements, listed as "negative list, focusing on vertical gauge, draw the party organizations 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 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. < code > and < Regulations > revised the necessity and revised history of the CPC Central Committee the amendment to the Chinese Communist Party members and leading cadres honest politics several guidelines > and < Chinese Communist Party discipline and Punishment Regulations > 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, ideological 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 party's leadership, to solve the masses of the people reflect a focus on the problem. The new revision of the < code > and < rule >, reflects the party's 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 party's eighteen years comprehensive strictly practice. (a) revised two regulations of the party need of < the ICAC guidelines > in < in 1997 Leaders as members of the Communist Party of China clean politics certain criteria (Trial) > 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 deepening, 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; 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 cadres above. < rule > is in 1997 < Chinese Communist Party disciplinary cases (Trial) > 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 administering 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 Constitution 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 < the criterion of a clean and honest administration > and < rule > the two is likely to be more relevant regulations first amendment. By revising, really put the authority 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 importance 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 Inspection 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 issues 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 people, 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, municipalities) 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 solicitation 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 Central 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, < code > and < Regulations > revision of the basic principles of two party regulations revision work and implement the party's eighteen, ten eight plenary, the spirit of the Fourth Plenary Session of the Eleventh Central Committee and General Secretary Xi Jinping important instructions on the revised < low political criterion > and < Regulations >, highlighting the ruling party characteristics, serious discipline, the discipline quite in front of the law, based on the current, a long-term, advance as a whole, with Bu Xiuding independent < rule > and < rule >. 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 the 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 Central 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 < code > and < rule > 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 fundamental 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 party. The Party of rule of virtue "de", mainly refers to the party's ideals and beliefs, excellent traditional style. The revised the < code > closely linked to the "self-discipline", insisting on the positive initiative, for all members, highlight the "vital few", emphasized self-discipline, focusing on the morality, 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 practice 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 Party members and cadres in the aspect of self-discipline and abide by the discipline to make clearly defined, especially the party's eighteen years strict political discipline and political rules, organization and discipline and to implement the central eight provisions of the spirit against the four 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 < code > and < rule > modified and needs to grasp several key problems (a) < code > < code > adhere to according to 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 pursuit, 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 content of the" negative list moved into synchronization amendment < cases >. 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 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 < code > is the ruling Party since the first insists on a positive advocate forAll Party members and the self-discipline norms, moral declaration issued to all members of the party and the National People's solemn commitment. > < criterion of a clean and honest administration consists of 4 parts, 18, more than 3600 words. After the revision of the < code >, 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, fundamental purpose, the fine traditions and work style, noble sentiments, such as "four must" the principle of requirements, strong tone of self-discipline, The higher request for 6 and supervised tenet, the foothold in permanent Bao the party's advanced nature and purity, to reflect the revised standards requirements. Members of self-discipline norms around the party members how to correctly treat and deal with the "public and private", "cheap and rot" thrifty and extravagance "bitter music", put forward the "four norms". Party leader cadre clean fingered self-discipline norms for the leadership of the party members and cadres of the "vital few", around the "clean politics", from civil servant of the color, the exercise of power, moral integrity, a good family tradition and other aspects of the leadership of the party members and cadres of the "four norms" < > < norm norm. "The Party