水泥混凝土路面加铺沥青层结构设计.doc

【精品文档】如有侵权，请联系网站删除，仅供学习与交流水泥混凝土路面加铺沥青层结构设计.精品文档.水泥混凝土路面加铺沥青层结构设计摘要 本文对旧水泥混凝土路面上沥青加铺层的结构设计进行了分析。关键词：市政道路；沥青加铺层；结构设计abstract： this paper analyzed the design of old cement concrete pavement add the asphalt overlay of structural.key words: municipal roads; asphalt overlay; structural design中图分类号： u416.216文献标识码：a文章编号：前言目前广东省大部分城市现有的市政道路以水泥混凝土路面为主，沥青路面仅占很小一部分。一线城市如广州、深圳等沥青路面覆盖率相对较高，二三线城市还是以水泥混凝土路面为主。早期市政道路水泥混凝土路面现已出现不同程度的破损，行车噪音大，而沥青路面表面平整无接缝，行车振动小，噪音小，城市形象美观。在原有水泥混凝土路面上加铺沥青混凝土的方法被广泛采纳。本文结合珠海市柠溪路、紫荆路、翠香路道路改造工程，阐述旧水泥混凝土路面上加铺沥青混凝土层的结构设计。一工程概况柠溪路、紫荆路、翠香路道路改造工程位于珠海市城区香洲区，柠溪路、紫荆路是连接香州片区与前山片区的城市主干道。柠溪路南起翠微西路，北至人民路/紫荆路，途经富柠街、吉柠路、双竹街、兴业路，全长2630米，改造后宽42米，双向六车道；紫荆路南起人民路/柠溪路，北至梅华东路，途经桃园路、银桦路、银香路、运通路、翠香路、兴华路、沿河东路，全长1688米，改造后宽40米，双向六车道。设计内容主要包括两座立交、一个地下停车场、九座人行地道、机动车道旧混凝土路面加铺沥青混凝土等。本工程在沥青路面使用性能气候分区中位于14区，本工程所在区域冬夏季节交替明显，终年气温较高，偶有阵寒，但冬无严寒，夏不酷热，年日温差较小，属南亚热带海洋性季风气候。年平均气温22.4。无冬季天气，终年气温在0以上，极端最低气温为2.5。日最高气温35的日子为数不多，全年为2.1天，极端最高气温为38.5。年平均相对湿度为79%。年降雨日为137.2天，年平均降雨量为1993.70mm。柠溪路紫荆路改造后为城市主干道，机动车道双向六车道，设计车速50km/h。设计使用年限内累计标准轴次为：1100万次/车道。二现状调查及病害处理2.1现有水泥砼路面缩缝、纵缝、胀缝处理：对道路沿线现状水泥砼路面接缝进行详细检查，对现有缩缝、纵缝、胀缝用高压水进行清洗，凡无填缝料或填缝料老化等病害需以sbs改性沥青重新填缝。2.2水泥砼板块断裂处理：路段路基不均匀沉降产生的裂缝，该类裂缝板块应整板凿除新建；其他要求在断裂缝位置两侧各宽出25cm范围内，凿除该范围水泥砼（厚度10cm）重新浇筑c35水泥砼。2.3水泥砼板块破碎部位处理：对水泥砼板块破碎部位两侧各宽出10cm范围进行切除，重新浇筑c35水泥砼，板块切除范围要求整齐。2.4水泥砼板块接缝啃边、自由边断角处理：现状水泥砼路面啃边、断角损坏较深、较宽的板块，应先凿除损坏部位（厚度10cm），重新浇筑c35水泥砼。破损面较浅、较窄的板块可先凿除破损路面（厚5cm），然后用4%橡胶沥青填平。2.5 水泥混凝土路面弯沉测试使用东风牌eq3092f190型车和贝克曼梁检测法，检测路段点数24个点，平均弯沉值为23.6（0.01mm），评定代表弯沉值33.1（0.01mm）。水泥混凝土抗极限抗拉强度最小4.6mpa，平均4.9mpa。2.6交通量调查据调查，柠溪路、紫荆路、翠香路主要以小客车为主，同时，公交车所占的比例也较高，该道路车辆类型比例情况如下：小客车约占51.2%，公交车约占9.8%，大客车约占7.6%，小货车约占16.5%，中货车约占11.4%，其他车辆约占3.4%。三沥青加铺层设计的原则加铺层结构设计包括结构组合、厚度计算与材料组成，其原则如下：路面设计应根据道路等级与使用要求，遵循因地制宜、方便施工、利于养护的原则，结合当地条件和经验，对路面进行综合设计，以达到技术经济合理，安全适用的目的。主要考虑因素是延缓和减少反射裂缝的出现，具备高温稳定性和避免水损害等特点，满足行车安全的抗滑要求。五沥青加铺层结构设计在参考已有工程经验和理论分析的基础上，根据沥青加铺层的结构设计原则，综合分析比较，机动车道加铺沥青混凝土路面结构组成为：4cmsbs细粒式改性沥青混凝土上面层(ac13c)，6cm中粒式沥青混凝土下面层（ac20c），调平层，具体结构详见下图。沥青混合料的类型选择和配合比设计是保证沥青路面使用质量和功能的关键，要求加铺层的沥青混合料本身具有高温抗车辙、低温抗开裂及抗疲劳、耐久等性能，同时能防止雨水下渗，诱发水损害。5.1上面层设计上面层应具有密实均匀、抗滑耐磨的功能。根据工程地区气候条件，结合以往工程实践，上面层选用抗滑和防渗效果好的粗型级配ac-13c。沥青采用sbs成品改性沥青，并在灯控交叉口进口段路段100m范围内添加聚丙烯腈纶纤维。5.2中（下）面层沥青混合料类型的选择根据以往工程案例，车辙变形一般发生在中面层。因此中（下）面层的一个重要作用是抗车辙，具有高温稳定性和水稳性。所以选用ac-20c作中（下）面层，沥青采用b-50沥青。为提高沥青砼路面抗车辙性能，本次改造中在灯控交叉口进口段路段100m范围内添加抗车辙剂。5.3其他措施及技术要求（1）随着新材料的发展和应用，不少研究实践证明使用土工布是减缓沥青混合料反射裂缝的一种有效、经济的方法。为保证工程质量，我们对土工布加以严格控制，选用了压缩性小，模量大，化学和生物作用稳定，浸透沥青性能良好的聚酯长丝无纺土工布，规格为150g/m2。该土工布抗拉强度达到8kn/m以上。具有良好的延伸性和抗刺破和胀破能力，可将应力扩展至更广范围，缓解裂缝处的应力集中，起到了吸收部分拉伸能量的作用。（2）在水泥混凝土路面与沥青层之间以及各沥青层之间分别洒al(m)-4粘层油，主要提高界面粘结能力和减少雨水渗入到路面结构内部。（3）调平层根据沥青砼加铺层与现状砼路面之间高差采用不同材料，当高差7cm时，调平层采用中粒式沥青砼(ac-20c)；当12cm高差7cm时，采用密级配沥青碎石(atb-25)；当高差12cm时，采用水泥稳定级配碎石。（4）沥青混合料矿料的技术要求：粗集料应选用坚硬、耐磨、抗冲击性好的碎石或破碎砾石，不可使用筛选砾石、矿渣及软质集料。细集料：细集料应选用天然砂或人工砂，当用石屑代替砂时，石屑用量不得超过砂用量，且石屑应为碱性。技术指标：表面密度2.45吨/立米。矿粉：矿粉应由石灰岩中的强基性岩石磨制而成，也可由石灰、水泥代替。但用这些物质作填料时，其用量不宜超过矿料总量的2%。不得用粉煤灰代替矿粉。技术指标：表面密度2.45吨/立米。含水量：1%。（5）沥青混合料施工温度控制要求：沥青砼施工温度（）为确保沥青混合料的摊铺温度，拌和厂至施工现场1小时运输时间。六结论本文结合柠溪路、紫荆路、翠香路道路改造工程旧水泥混凝土路面改造工程，在各种基础资料调查的基础上，根据旧水泥混凝土路面上沥青混合料加铺层结构设计的原则，依据国内外实体工程的实施经验与理论分析结果，提出柠溪路、紫荆路、翠香路道路改造工程旧水泥混凝土路面上沥青混合料加铺层的结构设计方案。并对结构方案进行了初步的分析与论证，提出了几条保证沥青加铺层使用性能的措施和技术要求，该方案的效果需经过工程实践的检验。参考文献：【1】公路沥青路面设计规范(jtg d50-2006)，人民交通出版社，2006。【2】公路沥青路面施工技术规范（jtg f40-2004），人民交通出版社，2004。【3】徐世法，季节等。沥青铺装层病害防治与典型实例，人民交通出版社，2005。【4】沙庆林，王旭东，水泥混凝土路面加铺沥青混凝土面层的技术研究，公路，2002。【5】刘晓春，旧水泥路面的沥青加铺层设计分析，交通科技，2005。【6】熊朝晖,刘蓉晖，对旧水泥混凝土路面进行加铺改造的探讨j，湖南交通科技，2004。注：文章内所有公式及图表请以pdf形式查看。（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 e