连续刚构桥施工控制技术研究
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摘要
桥梁是公路、铁路、城市道路和农村道路及水利建设中,为了跨越各种障碍的结构物。桥梁在交通事业中占有举足轻重的地位。在国防上,桥梁是交通的咽喉,它更占有非常重要的地位。连续刚构桥能满足特大跨径桥梁的受力要求,除梁端以外无其他伸缩缝,有利于行车平顺舒适,具有结构整体性能好、抗震能力强、承载能力强、施工快捷等结构特点,因此在城乡已建和在建的桥梁中占据了越来越大的比重。
本文在分析总结国内外连续刚构桥施工控制技术的发展趋势之后,对大跨径连续刚构桥的施工控制技术进行了研究。
根据大跨径连续刚构桥的特点,探讨了各种参数对结构内力和变形等方面的影响,提出施工控制模拟计算中各种参数的取舍;根据大跨径连续刚构桥内力和变形的特点,提出了合理的观测方案,建立了全面的监测系统。运用这一监测系统,在实际工程施工控制过程中,成功采集了施工过程的基础数据和技术信息,与理论数据进行比较分析,运用灰色理论进行预拱度调整,提出合适的预拱度指导施工。本文从工程实际出发,对预应力混凝土刚构桥施工过程线形预拱度控制的结构计算分析和误差调整预测方面作了较为深入的研究,对灰色理论进行了一定的研究,并把灰色理论应用到实际工程中,提供合理的预抛高值指导施工,促使全桥顺利合拢,从而成功完成对实际工程的施工控制。为以后同类型桥梁的施工提供可借鉴的施工控制方案。
The bridge is in highway, railroad, city road and village road and water conservancy construction, is for crossing over various obstacle of structure thing. The bridge occupies a prominent position in the transportation business. On the national defense, the bridge is the throat of transportation and it occupies a count for much position more. In a row the Gou bridge just canned satisfy to greatly across being request by dint of path bridge especially, in addition to the beam carry have no other flexible sew, be advantageous to going a car going smoothly comfort, have structure whole function a good、anti- an earthquake ability strong、a loading the ability strong、to start construction fast etc. Structure characteristics, so have already set up in the city country and occupy more and more big specific weight in set up of the bridge.
Through the analysis and summary of the development of PC continuous rigid frame bridge and the developmental tendency of the construction control techniques in our country and abroad, the paper gives the study of the construction control techniques for long-span prestressing PC continuous rigid frame bridge.
According to the special character of the PC continuous rigid frame bridge, the paper discusses that various parameters have effect on the inner force and displacement of the structure. and put forward taking the parameter or not in the calculation. According to the special character of the PC continuous rigid frame bridge. The paper suggests a good way of observation in the course of construction control, and establishes a monitoring system. During the construction control of actual construction, the system makes the basic parameters and technical parameters be acquired successfully. And compare with the theory data .Adjust arch degree from the use of the gray theories. and put forward suitability preparing an arch degree instruction the execution .The text physically sets out from the actual construction make the profound research about the theory of calculation analyze and error margin adjusted estimate aspect of PC continuous rigid frame bridge, Carried on a certain research to the gray theories, and apply the gray theories to the actual engineering, the paper gives reasonable counter-camber to direct construction and join the two sections of the bridge, and finishes the construction control of actual construction. And the paper provides a good way of observation in the course of construction control.
本文在分析总结国内外连续刚构桥施工控制技术的发展趋势之后,对大跨径连续刚构桥的施工控制技术进行了研究。
根据大跨径连续刚构桥的特点,探讨了各种参数对结构内力和变形等方面的影响,提出施工控制模拟计算中各种参数的取舍;根据大跨径连续刚构桥内力和变形的特点,提出了合理的观测方案,建立了全面的监测系统。运用这一监测系统,在实际工程施工控制过程中,成功采集了施工过程的基础数据和技术信息,与理论数据进行比较分析,运用灰色理论进行预拱度调整,提出合适的预拱度指导施工。本文从工程实际出发,对预应力混凝土刚构桥施工过程线形预拱度控制的结构计算分析和误差调整预测方面作了较为深入的研究,对灰色理论进行了一定的研究,并把灰色理论应用到实际工程中,提供合理的预抛高值指导施工,促使全桥顺利合拢,从而成功完成对实际工程的施工控制。为以后同类型桥梁的施工提供可借鉴的施工控制方案。
The bridge is in highway, railroad, city road and village road and water conservancy construction, is for crossing over various obstacle of structure thing. The bridge occupies a prominent position in the transportation business. On the national defense, the bridge is the throat of transportation and it occupies a count for much position more. In a row the Gou bridge just canned satisfy to greatly across being request by dint of path bridge especially, in addition to the beam carry have no other flexible sew, be advantageous to going a car going smoothly comfort, have structure whole function a good、anti- an earthquake ability strong、a loading the ability strong、to start construction fast etc. Structure characteristics, so have already set up in the city country and occupy more and more big specific weight in set up of the bridge.
Through the analysis and summary of the development of PC continuous rigid frame bridge and the developmental tendency of the construction control techniques in our country and abroad, the paper gives the study of the construction control techniques for long-span prestressing PC continuous rigid frame bridge.
According to the special character of the PC continuous rigid frame bridge, the paper discusses that various parameters have effect on the inner force and displacement of the structure. and put forward taking the parameter or not in the calculation. According to the special character of the PC continuous rigid frame bridge. The paper suggests a good way of observation in the course of construction control, and establishes a monitoring system. During the construction control of actual construction, the system makes the basic parameters and technical parameters be acquired successfully. And compare with the theory data .Adjust arch degree from the use of the gray theories. and put forward suitability preparing an arch degree instruction the execution .The text physically sets out from the actual construction make the profound research about the theory of calculation analyze and error margin adjusted estimate aspect of PC continuous rigid frame bridge, Carried on a certain research to the gray theories, and apply the gray theories to the actual engineering, the paper gives reasonable counter-camber to direct construction and join the two sections of the bridge, and finishes the construction control of actual construction. And the paper provides a good way of observation in the course of construction control.
引文
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[33]李文利.建筑材料.中国建材工业出版社.2004.8
[2]《建筑桩基技术规范》(JGJ 94-94)[S].中国建筑工业出版社.1995
[3]《建筑地基基础设计规范》(GB50007-2002)[S].中国建筑工业出版社.2002.4.1
[4]《岩土工程勘察规范》(GB50021-2001)[S].中国建筑工业出版社.2002.3.1
[5]《桩基工程手册》[S].中国建筑工业出版社.1997
[6]《岩土工程手册》[S].中国建筑工业出版社.1996
[7]范立础.《桥梁工程》.人民交通出版社
[8]王晓谋.《基础工程》[M].人民交通出版社.2003.8
[9]洪毓康.《土质学与土力学》[M].人民交通出版社.1982
[10]王秀丽,白良《基础工程》[M].第1版.重庆大学出版社.2001
[11]王有志、薛互冯、张启海、高赐群.《预应力混凝土结构》.中国水利水电出版社.
[12]王广月、王盛桂、付志前.《地基基础工程》.中国水利水电出版社.
[13]张雨化.《道路勘测设计》.人民交通出版社.
[14]吴世明,大型地基基础工程技术[A].浙江大学出版社,1997.
[15]顾宝和.根据变形确定扩底墩的轴向承载力[A].第三届工程勘察学术交流会论文集.中国建筑工业出版社.1987
[16]董志强、王其伟.《钻孔灌注桩常见问题分析及处理》.2006.2
[17]霍志芳.人工挖孔扩底桩竖向承载力计算[A].硕士学位论文.2002.6
[18]高广运、王文东、杨忠政.扩底墩基础承载力和变形评价[A].中国土木工程学会第七届土力学及基础工程学术会议论文集
[19]徐必超.人工挖孔大直径扩底桩的设计探讨[A].南京建工学院学报.2000.1
[20]田再琦、武秀彦、王正秋.大直径挖孔扩底桩原型试验及承载力确定[A].建筑结构.1997.10
[21]王伯惠、上官兴.《中国钻孔灌注桩新发展》[M].人民交通出版社
[22]唐益群、叶为民.《土木工程测试技术手册》[M].同济大学出版社.1999.5
[23]顾宝和、刘惠军等.深井载荷试验测定深层土的承载力及变形模量[A].第五届 岩土工程实录会专题报告
[24]张荣祥.大直径挖孔扩底桩桩端承载力的规范取值问题[A].岩土工程师.Vol.7 No.1feb.1995
[25]张荣祥、顾宝和、汪敏.大直径扩底桩承载力和沉降变形分析[A].工程勘察.1998
[26]高广运.扩底墩基础的承载力和变形评价[A].现代勘察.1989.1
[27]高广运、吴世明.黄土中灌注桩竖向承载力试验分析[A].岩土工程学报.1998.3
[28]施峰、蔡来炳、柳春.人工挖孔扩底桩承载力试验研究[A].工程勘察.1999.2
[29]孔祥金、任永利.公路桥梁大直径桩的现状与发展[A].广东公路交通.1999.4
[30]单远铭.大直径灌注桩端阻力的深井载荷试验[A].勘察科学技术.1999.4
[31]刘之春、蒋永生、龚维明.大直径扩底桩承载力的沉降变形控制设计法初探[A].东南大学学报.2001.7 Vol.31No.4
[32]建筑施工手册(缩印本)第二版 中国建筑工业出版社.1992.3
[33]李文利.建筑材料.中国建材工业出版社.2004.8