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1、桩板式挡土墙施工方案一、工程概况本工程共有8段桩板式挡墙见表一表一桩板式挡墙编号桩号范围挡墙全长（米）桩截面长宽（米）桩嵌岩深度（米）挡板厚度（毫米）匝道B段8#0-6350匝道C段1#26350匝道C段4#26350匝道E段1#2226350内环快速路3#26350涂山路2#350涂山路4#26350涂山路7#6350冠梁高均为1米，宽度为该段挡墙桩截面的最小长度。冠梁上方均设置悬挑挡墙高为1.05米，宽0.5到1米不等。两桩之间挡板迎土面，冠梁底部均设置2根竖向100透水管，在底部与一根横向100透水管相接。桩身混凝土为C35掺入水泥用量8%的He高效抗裂剂，挡板、冠梁、悬挑挡墙为普通C3
2、0混凝土。钢材直径小于12的为HPB300, 钢材直径大于等于12的为HRB400, 大于等于16的钢材连接采用强剥肋滚扎直螺纹接头。桩地基承载力：泥岩天然单轴抗压pa二、编制依据1设计图纸2合同及相关文件3相关规范4施工组织设计三、编制目的保证质量，并一次验收合格。安全实现零伤亡工期满足节点工期需要四施工措施1， 挖孔桩施工见挖孔桩专项施工方案2，大体积混凝土施工，根据JGJ55-2000 普通混凝土配合比设计规程中定义大体积混凝土为：混凝土结构物实体最小尺寸等于或大于1m，或预计会因水泥水化热引起混凝土内外温差过大而导致裂缝的混凝土。米，所有的桩均属于大体积混凝土。见大体积混凝土专项施工方
3、案3，材料的转运，为保证处理材料及时到场，不影响工期对不通道路的桩板挡墙处修临时道路，临时道路宽3米，结构如图：五施工进度根据整个项目的总体安排，本分部分项工程计划完成时间见表二：表二桩板式挡墙编号桩号范围挡墙全长（米）计划完成时间（天）匝道B段8#0-43匝道C段1#43匝道C段4#43匝道E段1#43内环快速路3#43涂山路2#130涂山路4#72涂山路7#43六、总体施工流程 测量放线桩基础施工桩上身施工挡板施工回填土石方施工冠梁施工悬挑挡墙施工施工方法施工准备。首先测定桩位、修筑临时道路、平整场地。桩基础施工见挖孔桩专项施工方案在桩检测合格后开始桩上身施工桩上身施工工艺为绑扎钢筋安装模
4、板浇筑混凝土绑扎钢筋时应按图绑扎，并按大体积混凝土专项施工方案要求将循环水管埋好。安装模板，模板采用优质九夹板，背楞采用50100的松木，用483.5的钢管，用M16螺栓进行加固。背楞间距250mm，钢管间距450mm，螺栓间距为450500如图模板计算书说明：本计算以每小时浇筑1000mm 2000mm高，对拉螺栓间距450mm计算。柱子截面为35003500，验算3500面的承载力。1、荷载设计值：A、振捣砼时产生的荷载标准值： B、倾倒砼时对垂直模板产生的水平荷载标准值：C、新浇砼对模板侧面的压力：取公与公式中较小值：砼重力密度：24KN/m3：新浇砼初凝时间：=200/（T+15）=2
5、00/（10+15）=8hV：砼浇筑速度（m/h）：2m/h：外加剂影响修正系数：砼塌落度修正系数：根据公式根据公式两者中小值，即D、模板所受最大侧压力设计值：2、柱模面板（九夹板）验算，受力按四等跨连续梁考虑。按最不利荷载布置查表（建筑施工手册“2施工常用结构计算”）得：抗弯强度验算抗剪强度验算剪应力挠度验算=3、柱模竖向小柱（计算查建筑施工手册（第三版）“2施工常用结构计算”得松木设计强度和弹性模量如下：（顺纹抗压）（顺纹抗压）（顺纹抗压）（弹性模量）抗弯强度验算抗弯承载力计算：小楞外的背楞间距为450mm，是一个等跨多跨连续梁，考虑松木长度有限，故按四等跨计算。按最不利荷载布置查表（建筑
6、施工手册“2施工常用结构计算”）得：则： （可）抗剪强度验算剪应力 （可）挠度验算不包括施工人员、机械荷载（可）4、柱模板柱箍（48双钢管）计算查建筑施工扣件式钢管脚手架构造与计算P192页得48钢管各项参数如下：截面积惯性矩截面模量设计强度f 弹性模量抗弯强度验算横肋48双钢管最大跨度根据对拉螺杆间距450mm计算，考虑最不利受荷。则：106/（25.08103）N/mm2fm=215N/mm2（可）挠度验算不包括施工人员、机械荷截（384EI）50.45）4504/（384106104）0.18mm21.07KN,满足要求。 混凝土浇筑、及拆模后的养生按大体积混凝土专项施工方案进行挡板施工
7、时保证钢筋的机械接头的质量，如无法施工时，应采用焊接接头。挡板模板一次安装6米高，模板采用优质九夹板，背楞采用50100的松木，用483.5的钢管，用M16螺栓进行加固。背楞间距250mm，钢管间距450mm，螺栓间距为450500。安装方式同桩上身模板。回填土石方施工填筑前按设计要求安好道路土工布，作好碎石反滤层，然后进行墙后回填，用于回填的全部材料，必须符合技术规范和设计要求，填料既要能被充分压实，具备良好的透水性，且不含有草根、腐植物或冻土块等杂物。回填石灰土应按要求拌合。回填应分层填筑，根据压实机型，一般控制在每层填厚不大于10-15厘米，分层填筑应尽量保证摊铺厚度均匀、平顺。在雨季回
8、填时，填筑面应做成3%-4%的坡度，以利于排水。回填应在排干积水的情况下作业，回填工作应得到监理工程师的同意。靠路基的坡度应当挖成台阶，以便于保证回填质量。回填前，先在断面上划分回填层次，确定检测频率，填写检测记录。填筑时要设专人负责，每一构造物谁负责回填要明确。不同土质分层填筑，不准混合用。回填土要经过选择，含水量要接近最佳含水量。每层回填都要做压实度检验，压实度检验记录必须和填筑高度相等，并保证符合技术规范要求。冠梁施工在回填土上将线放出，并浇筑100厚C20混凝土表面收光，作为冠梁底模。钢筋绑扎经验收合格后安装模板。如图冠梁混凝土施工一、二次浇筑300mm高第三次浇筑400mm，浇筑完后
9、12小时内开始养护。悬挑挡墙施工工艺同冠梁施工工艺。七主要质量要求和验收标准 混凝土结构构件的检查按照施工段进行划分检验批，同一检验批内抽查10%。混凝土外观质量和尺寸偏差的主控项目和一般项目必须符合混凝土结构工程施工质量验收规范（GB50204-2002）中的相关规定，同时还要满足国优工程标准要求。主要构件的允许偏差项目（见下表）：项次检查项目允许偏差（mm）检验方法1轴线位移5mm尺量检查2标高5mm用水平仪检查3表面平整度3mm2m靠尺和塞尺4预埋件中心线位置偏移2mm尺量检查5基础尺寸5mm尺量检查8角、线顺直度3mm拉线、尺量检查9（英文版 ） Two regulations pro
10、mulgated 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. T
11、he two regulations supporting 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, dr
12、aw 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 fundame
13、ntal 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. and revised the necessity a
14、nd revised history of 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 th
15、e 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 partys leadership, to solve the masses of the people reflect a fo
16、cus on the problem. The 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 yea
17、rs comprehensive strictly 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 ad
18、ministering 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 a
19、utonomy 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
20、county-level leading cadres 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 comprehen
21、sive 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 author
22、ity 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 and the two is likely to be more relevant regulations first amendment. By revising
23、, 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 a
24、ttaches 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 Commi
25、ssion 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
26、 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 ma
27、inly 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 (
28、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 Insp
29、ection 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
30、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, and revision of the basic principles of two party regulations revision work and implement the partys
31、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 and , highlighting the ruling party characteristics, serious discipline, the discipline quite in front of the law, based on t
32、he current, a long-term, 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, maintain
33、ing 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 Se
34、ssion 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 and is Method in adhere to the regulations established for the purpose of combining rule of virtue is to adhere to the party
35、 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 governin
36、g the party and the party. 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, f
37、ocusing 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
38、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, t
39、he main problems of Party 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 sp
40、irit 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 and modified and needs to grasp several key problems (a)
41、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 Commu
42、nists 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 a
43、llowed to about the content 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 prominen
44、t 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 is the ruling Party since the first insists on a
45、 positive advocate forAll 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,