CN112211059A

CN112211059A - Inclined overhanging type supporting structure

Info

Publication number: CN112211059A
Application number: CN202011002862.XA
Authority: CN
Inventors: 谢晓林; 刘勇; 彭家贵; 季学亮; 曾中林; 肖婷婷; 石志龙; 刘强; 王正兵; 余雷; 戴俊巍; 万军; 王庆乐; 袁智洪
Original assignee: CREEC Chongqing Survey Design and Research Co Ltd
Current assignee: China Railway Eryuan Engineering Group Co Ltd CREEC; CREEC Chongqing Survey Design and Research Co Ltd
Priority date: 2020-09-22
Filing date: 2020-09-22
Publication date: 2021-01-12

Abstract

The invention provides an inclined cantilever type supporting structure which comprises at least two cantilever piles partially embedded into a gorge slope surface and arranged at intervals along the length direction of the gorge slope surface, wherein the cantilever piles are obliquely and upwards arranged relative to a horizontal plane, two adjacent cantilever piles are provided with retaining plates (bearing plates), the area between each retaining plate and the corresponding gorge slope surface is a filling area, and the filling area is of a solid structure or an interval pillar structure. The supporting structure fully utilizes the topographic characteristics of the steep gorge, enables the overhanging piles to be obliquely and upwards arranged on the gorge slope surface relative to the horizontal plane to form an overhanging structure, can effectively reduce the section size and the length of the overhanging piles, reduces the construction cost, and can effectively solve the problems of difficult filling under the topographic condition of the steep gorge, large size of the supporting structure, limited supporting height and wide occupied area; meanwhile, the river channel can be effectively prevented from being invaded along the river section, and the risk of underwater construction is avoided.

Description

Inclined overhanging type supporting structure

Technical Field

The invention belongs to the field of rock and soil, and particularly relates to an inclined cantilever type supporting rail structure.

Background

In the complex landform of the mountainous area, the steep canyon terrain is typical, a road is built under the terrain condition, a bridge and a tunnel project passes through the road, and the construction cost is high; the method is characterized in that the method is carried out in a roadbed mode, the backer excavation roadbed is greatly influenced by steep terrain, the excavation difficulty is high, and the road route selection is generally widened towards the canyon side. Adopt the road bed mode of filling after widening, can form high big fill slope embankment, embankment overall stability is poor, and area is big, can encroach on the river course by a large scale at the river-following district, and is great to the environmental impact, is not conform to the environmental protection requirement. Adopt upright fender measures such as traditional gravity type barricade, sheet pile wall isotructure or its combination form, effective processing height is limited, and under canyon topography condition, it is highly great to prop up the fender, and ground pressure is great, and the structure size is big, and wall crown displacement control is difficult, and the foundation construction difficulty, especially in the river district along, upright fender structure not only can encroach on the river course, wades the construction difficulty moreover, and the risk is higher.

Disclosure of Invention

The invention aims to solve the technical problems in the prior art, and aims to provide an inclined cantilever type supporting structure to solve the technical problems that the existing supporting structure for the steep canyon terrain is large in size and limited in supporting height.

In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides an incline and encorbelment formula and prop up shelves structure, includes that the part buries the stake of encorbelmenting that two at least edges gorge domatic length direction intervals set up in the gorge, and the stake of encorbelmenting upwards sets up relative horizontal plane slope, is provided with the fender board on two adjacent encorbelments, and the region between fender board and the gorge is fill area, and fill area is solid construction or spaced pillar structure.

The supporting structure makes full use of the topographic characteristics of the steep gorge, enables the overhanging piles to be obliquely and upwards arranged on the gorge slope surface relative to the horizontal plane to form an overhanging structure, can effectively reduce the filling height and reduce the filling pressure, thereby reducing the section size and the length of the overhanging piles, reducing the construction cost, and effectively solving the problems of difficult filling, large size of the supporting structure, limited supporting height and wide occupied area under the topographic condition of the steep gorge; meanwhile, the river channel can be effectively prevented from being invaded along the river section, and the risk of underwater construction is avoided.

In a preferred embodiment of the present invention, the cantilever piles are cast of reinforced concrete.

In a preferred embodiment of the present invention, the retaining plate is cast of reinforced concrete.

In a preferred embodiment of the invention, the cantilever piles are inserted into the canyon slope obliquely or perpendicularly to the canyon slope.

In a preferred embodiment of the invention, the retaining plate bottom is embedded in the canyon slope. The connection strength of the support structure and the canyon slope is increased.

In another preferred embodiment of the invention, the length of the cantilever pile embedded in the sloping surface of the canyon is 1/3-1/2 of the length of the cantilever pile. The embedding depth of the overhanging piles is reasonable, and the connecting strength of the supporting structure and the gorge slope is increased.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic cross-sectional view of an oblique cantilevered abutment structure according to an embodiment of the present application.

Fig. 2 is a partial schematic view of a-a in fig. 1.

Reference numerals in the drawings of the specification include: the cantilever pile comprises a cantilever pile 1, a retaining plate 2, a filling area 3, a gorge slope surface 4, a road surface 5 and an intersection line B.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "vertical", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description of the present invention, unless otherwise specified and limited, it is to be noted that the terms "mounted," "connected," and "connected" are to be interpreted broadly, and may be, for example, a mechanical connection or an electrical connection, a communication between two elements, a direct connection, or an indirect connection via an intermediate medium, and specific meanings of the terms may be understood by those skilled in the art according to specific situations.

The invention provides an inclined cantilever type supporting structure, as shown in fig. 1 and fig. 2, in a preferred embodiment, the inclined cantilever type supporting structure comprises at least two cantilever piles 1 which are partially embedded into a canyon slope surface 4 and are arranged at intervals along the length direction of the canyon slope surface 4 (namely the advancing direction of a road), the cantilever piles 1 are arranged obliquely upwards relative to a horizontal plane, and in practice, different numbers of cantilever piles 1 are selected and arranged according to the length of the road. Be provided with retaining plate 2 on two adjacent overhanging piles 1, the both ends of retaining plate 2 are as an organic whole with two adjacent overhanging piles 1 rigid couplings respectively, and preferably 2 bottoms of retaining plate imbeds in the domatic 4 of gorge, and the intersection line of retaining plate 2 and the domatic 4 of gorge is B.

In the present embodiment, it is preferable that both the cantilever piles 1 and the retaining plates 2 are cast with reinforced concrete. The area between the retaining plate 2 and the gorge slope 4 is a filling area 3, the filling area 3 is a solid structure or an interval pillar structure, preferably, the filling area 3 is a solid structure, for example, a solid filling soil body, the strength is reliable, the cost is low, and a road surface 5 is built above the filling soil body to form a road.

In the present embodiment, when the cantilever piles 1 are embedded in the canyon slope surface 4, the cantilever piles may be inserted into the canyon slope surface 4 obliquely with respect to the canyon slope surface 4 as shown in fig. 1, or may be inserted into the canyon slope surface 4 perpendicularly with respect to the canyon slope surface 4, and it is preferable that the length of the cantilever piles 1 embedded in the canyon slope surface 4 is 1/3 to 1/2 of the length of the cantilever piles 1.

When the road is widened by the inclined cantilever type supporting structure in practical application, the following steps can be adopted:

s1, excavating pile wells of the cantilever piles 1 on the valley slope 4;

s2, binding a steel reinforcement cage of the overhanging pile 1;

s3, erecting a mould and casting the overhanging pile 1 in situ;

s4, removing the formwork of the cantilever pile 1 and completing maintenance;

s5, binding a reinforcement cage of the retaining plate 2;

s6, erecting a mould and casting the soil retaining plate 2 in situ;

s7, removing the mold of the soil blocking plate 2 and finishing maintenance;

s8, filling soil in the filling area 3 between the retaining plate 2 and the canyon slope 4;

and S9, building the pavement 5 above the filling soil body to form a road.

The method for widening the road has the advantages of mature construction technology, safety, reliability, economy and environmental protection, has popularization and application prospects, and meets the requirement of environmental protection.

In the description herein, reference to the description of the terms "preferred embodiment," "one embodiment," "some embodiments," "an example," "a specific example" or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. The utility model provides an incline and encorbelment formula and prop up shelves structure, its characterized in that includes that the part buries the stake of encorbelmenting that two at least edges gorge domatic length direction intervals set up in the gorge domatic, the stake of encorbelmenting upwards sets up relative horizontal plane slope, is provided with the fender board on two adjacent encorbelments the stake, the regional fill area that keeps off between board and the gorge domatic, the fill area is solid construction or spaced strut structure.

2. The inclined cantilever structure of claim 1, wherein the cantilever pile is cast of reinforced concrete.

3. The inclined cantilever type retaining structure of claim 1, wherein the retaining plate is cast of reinforced concrete.

4. The inclined cantilever buttress structure of claim 1, wherein the cantilever piles are inclined or perpendicular to the canyon slope surface and are inserted into the canyon slope surface.

5. An inclined cantilever retaining structure as claimed in any one of claims 1 to 4 wherein the retaining plate bottom is inset into the canyon slope.

6. The inclined cantilever buttress structure of any one of claims 1-4, wherein the length of the cantilever piles embedded in the sloping surface of the canyon is 1/3-1/2 of the length of the cantilever piles.