Pebble bed water-rich deep foundation pit protective structure adjacent to existing high-speed rail

A technology for deep foundation pits and pebble layers, which is used in infrastructure engineering, excavation, construction, etc., can solve problems such as poor stability of horizontal support rods, stratum landslides, and collapse and rupture of water-stop walls, and achieve the effect of avoiding deformation.

CN110761301APending Publication Date: 2020-02-07向怀轶
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2020-02-07

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Abstract

The invention provides a pebble bed water-rich deep foundation pit protective structure adjacent to an existing high-speed rail, and relates to the technical field of deep foundation pit protection. The pebble bed water-rich deep foundation pit protective structure adjacent to the existing high-speed rail comprises the ground, the top end of the ground is paved with a high-speed rail line, a deformation observation point is fixedly installed on the right side of the high speed rail line, the surface of the ground is provided with a deep foundation pit, the left side of the deep foundation pitin the ground is provided with drilled fender posts through pouring, and round reinforcement cages are placed in the drilled fender posts. According to the pebble bed water-rich deep foundation pit protective structure adjacent to the existing high-speed rail, processing of the inner wall of the deep foundation pit is avoided, and convenience and rapidness are achieved better; meanwhile, influenceon internal stress of the ground is small, deformation of the rail in the construction process is avoided, the yield strength, for stratum supporting, of the drilled fender posts and interlocking water stopping posts is improved, the supporting effect on the stratum is improved, and the stability of supporting rods is improved.
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Description

technical field

[0001] The invention relates to the technical field of deep foundation pit protection, in particular to a water-rich deep foundation pit protection structure adjacent to an existing high-speed iron pebble layer. Background technique

[0002] With the development of urban construction, there are more and more deep foundation pits adjacent to the existing high-speed railway in operation. Since the high-speed ballastless track is extremely sensitive to deformation, it is almost a "zero settlement" requirement for the ballastless track high-speed railway in operation. When the stratum is In sand and pebble layers with strong water permeability, the groundwater level is often high. The excavation and precipitation of conventional foundation pits will have varying degrees of impact on the adjacent existing high-speed ballastless track railway, and even endanger the safety of high-speed railway operation. Therefore, it is necessary to build a protective structure in...

Examples

Embodiment Construction

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0030] The embodiment of the water-rich deep foundation pit protection structure adjacent to the existing high-speed rail pebble layer is as follows:

[0031] see Figure 1-6 , a protective structure for rich water deep foundation pit adjacent to the existing high-speed rail pebble layer, including 1. ground; 2. high-speed rail line; 3. deformation observation point; 4. deep foundation pit; Reinforcement cage; 7. Occlusion water stop pile; 8. Rectangular rein...