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| 下穿高速公路结构顶进施工方案和数值分析 | |
| 引用本文： | 冯卫星,王道远,丁军霞.下穿高速公路结构顶进施工方案和数值分析[J].国防交通工程与技术,2010,8(2):31-35. |
| 作者姓名： | 冯卫星 王道远 丁军霞 |
| 作者单位： | 1. 河北交通职业技术学院院长办公室,河北,石家庄,050091;石家庄铁道学院土木工程分院,河北,石家庄,050043 2. 河北交通职业技术学院土木工程系,河北,石家庄,050091 3. 石家庄铁道学院土木工程分院,河北,石家庄,050043 |
| 摘 要： | 详细介绍了不中断交通的高速公路下大型框架结构顶进施工方案,内容包括长大管棚打设、箱涵顶进施工技术和要求。相应的数值建模和分析表明:由于开挖、顶进使三个典型断面上方路面沉降最大发生在箱涵顶进入口附近,其次是出口附近,最小为箱涵顶进的中间位置,因此在箱涵进、出口10m范围内更应做好管棚护顶和箱涵基础的加固。 |
| 关 键 词： | 高速公路 不中断交通 框架顶进 长大管棚施工 数值分析 |
Construction Scheme for and Corresponding Numerical Analysis of Thrusting the Large-size Frame Structure Under the Expressway |
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| Feng Weixing,Wang Daoyuan,Ding Junxia.Construction Scheme for and Corresponding Numerical Analysis of Thrusting the Large-size Frame Structure Under the Expressway[J].Traffic Engineering and Technology for National Defence,2010,8(2):31-35. | |
| Authors: | Feng Weixing Wang Daoyuan Ding Junxia |
| Institution: | 1. President Office, Hebei Jiaotong Vocational and Technical College, Shijiazhuang 050091; 2. Department of Civil Engineering, Hebei Jiaotong Vocational and Technical College,Shijiazhuang 050091; 3. School of Civil Engineering, Shijiazhuang Railway Institute,Shijiazhuang 050043) |
| Abstract: | The construction scheme for thrusting the large-size frame structure under the expressway without breaking off the traffic is introduced in detail in the paper, including the set-up of long pipe-roofs, construction techniques and requirements for thrusting the box culvert. The corresponding numerical modeling and analytical results show that in the three typical sections, the largest road surface settlement occurs near the thrusting inlet of the frame structure,the secondary settlement occurs near the thrusting outlet of the frame structure,and the smallest settlement occurs at the middle. Therefore, in the 10-m sections at both the inlet and outlet of the box culvert, the pipe-roof and the foundation of the box culvert should be well strengthened. |
| Keywords: | expressway without breaking off the traffic thrust of the frame structure large scale pipe-roof construction numerical analysis |
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