A tunnel design and construction method
A technology for tunnels and roofs, applied in construction, artificial islands, infrastructure engineering, etc., can solve the problems of long construction period, waste of resources, consumption, etc., achieve saving of building materials and construction period, high vertical bearing capacity, and settlement settlement problem effect
Active Publication Date: 2019-06-21
广东省建工设计院有限公司
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Problems solved by technology
Traditional design and construction methods are currently being used on a large scale in China, and there are obvious shortcomings: (1) The traditional method of foundation pit support structure consumes a lot of reinforced concrete materials, but it is only for temporary use, and it will fail after the tunnel is completed. Recycling and utilization, resulting in a lot of waste of resources; (2) The traditional method has many processes and a long construction period
Method used
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Embodiment 1
[0037] Such as Figure 1-8 As shown, the tunnel constructed in this embodiment is a double-hole tunnel, and the specific design and construction method includes the following steps:
[0038] S10. Design and construction of tunnel side wall 2 and middle partition wall 3
[0039] Calculation and analysis are carried out according to the stress conditions of the tunnel side wall 2 as a temporary support structure during the tunnel construction process and as a permanent structure after completion. According to the calculation and analysis results, the most unfavorable working condition is taken as the design of the tunnel side wall 2 Requirements, the construction of the tunnel side wall 2 is carried out using the conventional underground diaphragm wall construction method.
[0040] It can be seen that the tunnel side wall constructed by this method not only considers the status of the temporary structure during the construction period, but also considers the force status of the...
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The invention discloses a tunnel design and construction method. Lateral walls of a tunnel are used as a supporting and protecting structure, and therefore a temporary supporting and protecting structure is replaced. A top plate in the tunnel is constructed in stages. A first stage of construction is used as a first tunnel support of a foundation pit, and therefore the first tunnel support is replaced. A tunnel middle wall is used as a temporary stand column of the support, and therefore the temporary stand column is replaced. A ground beam is used as a lowermost layer support of the foundation pit, and therefore the lowermost layer support of the foundation pit is replaced. A floor of a tradition open-cut tunnel is omitted. The ground beam is needed when lateral walls of the tunnel need to be subjected to force. The tunnel structure system constructed by the method is changed from single box single chamber or double chamber (single box and multi-chamber) closed box structure of a conventional tunnel to a door frame structure. The structural stress system is different from a tunnel built by traditional methods. Compared with a traditional tunnel construction method, material usageof the temporary supporting protecting structure and construction period are greatly saved.
Description
technical field [0001] The invention belongs to the field of tunnel engineering construction, and in particular relates to a tunnel design and construction method. Background technique [0002] Tunnel engineering construction methods are mainly divided into open-cut method and concealed-cut method, and the method proposed by the present invention belongs to the category of open-cut method. The construction process of the tunnel using the open cut method generally goes through the construction of the support structure, the excavation of the foundation pit, the pouring of the tunnel structure, and the backfilling process. The support structure can be a support pile or an underground diaphragm wall. According to the construction safety needs, it may also be necessary to set up support structures such as internal supports or anchor rods (cables) during the excavation process. After excavating the foundation pit to the bottom of the pit, pouring The cushion layer and the waterpr...
Claims
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IPC IPC(8): E02D29/055
CPCE02D29/055
Inventor 陈艳平叶蓓丁蕾王华邬龙刚吴子儒梁润泽吴太广杨峰
Owner 广东省建工设计院有限公司