CN216948417U

CN216948417U - Light backfill material retaining structure

Info

Publication number: CN216948417U
Application number: CN202123052455.2U
Authority: CN
Inventors: 张捷; 高世柱; 张颂南; 戴树才; 张培; 钱铖; 秦元; 凌谊君; 张川龙
Original assignee: SGIDI Engineering Consulting Group Co Ltd
Current assignee: Shanghai Survey Design And Research Institute Group Co ltd
Priority date: 2021-12-07
Filing date: 2021-12-07
Publication date: 2022-07-12
Anticipated expiration: 2031-12-07

Abstract

The utility model relates to a light backfill material retaining structure, which comprises a vertical component and a cross component transversely connected with the vertical component; the vertical component is divided into a plurality of vertical component sections from top to bottom; in the vertical component, the vertical component section positioned at the bottom and at least one vertical component section positioned in the middle are respectively and fixedly connected with the cross component; light roadbed filling materials are filled between adjacent cross members and between the uppermost cross member and the pavement structure. The utility model is provided with the cross members and the ribs, the roadbed filling material and the supporting and retaining structure are integrated, the self weight of the roadbed is utilized to resist the impact of vehicles, and the reduction of the structural size of the retaining wall can be realized on the basis of ensuring the structural strength, so that the bottom pressure of the retaining wall can be reduced, the requirement on the composite bearing capacity of the foundation is reduced, and a pile foundation is not required to be arranged; saving materials and construction period.

Description

Light backfill material retaining structure

Technical Field

The utility model relates to a light backfill material retaining structure, and belongs to the technical field of retaining structures.

Background

The conventional retaining structure in the aspect of filling the existing roadbed is mainly a retaining wall, and the conventional retaining structure is a cantilever type retaining wall and a gravity type retaining wall. These two types of retaining walls are large in volume and self-weight and need high composite bearing capacity of the foundation. The soft soil foundation of coastal city, the foundation bearing capacity is lower, is difficult to satisfy the required foundation bearing capacity requirement of retaining wall usually. The weak soil foundation usually needs additional strengthening treatment, such as stirring piles, granular material pile strengthening and the like.

With the updating of technology, the types of roadbed filling materials are gradually enriched. The roadbed filling is gradually developed to a light material such as foam light soil from original soil, inorganic binder stabilized soil, two-ash soil and the like. The light material has the characteristics of light weight, large self-cohesive force, small lateral soil pressure and less mechanical requirements on a retaining wall retaining structure. Therefore, the structure of the retaining wall can be properly thinned, the load of the retaining wall on the roadbed is reduced, and the requirement on the compound bearing capacity of the roadbed is further reduced.

The retaining wall of attenuate can remove current soil matrix reinforcement from and handle, nevertheless this brings new problem again. The retaining wall is used for supporting and blocking when the roadbed is filled, and is provided with a guardrail to prevent falling. The anti-collision of the retaining wall basically depends on the gravity of the retaining wall at present. Once the structure of the retaining wall is thinned, the impact requirements are often difficult to meet.

Disclosure of Invention

The utility model aims to provide a supporting structure which can not only eliminate a foundation treatment process, but also meet the anti-collision requirement.

The utility model adopts the following technical scheme:

a light backfill material retaining structure comprises a vertical component and a cross component 5 which is transversely connected with the vertical component; the vertical component is divided into a plurality of vertical component sections 1 from top to bottom; in the vertical member, a vertical member segment 1 positioned at the bottom and at least one vertical member segment 1 positioned at the middle are respectively and fixedly connected with the cross member 5; light roadbed filling materials are filled between the adjacent cross members 5 and between the uppermost cross member 5 and the pavement structure.

Preferably, the cross member 5 and the corresponding connected upright member segments 1 are connected in an inclined manner through ribs and inclined ribs 4 embedded in the ribs.

Furthermore, a plurality of longitudinal ribs 2 are arranged inside the vertical member segment 1, a plurality of transverse ribs 3 are arranged inside the transverse member 5, and the ribs or the inclined ribs 4 are fixedly connected with the longitudinal ribs 2 and the transverse ribs 3.

Preferably, the cross member 5 is provided with a raised structure 7 at an upper interval.

Preferably, the longitudinal bars 2 and the transverse bars 3 are steel bars or steel structures.

Further, the convex structures 7 are arranged at equal intervals.

Further, the convex structure 7 is made of concrete or steel plate.

The utility model has the beneficial effects that:

1) the cross members and the ribs are arranged, so that roadbed filling materials and the supporting and retaining structures are integrated, the self weight of the roadbed is utilized to resist vehicle impact, and the structural size of the retaining wall can be reduced on the basis of ensuring the structural strength, so that the bottom pressure of the retaining wall can be reduced, the requirement on the composite bearing capacity of a foundation is reduced, and a pile foundation is not required to be arranged; saving materials and construction period.

2) The transverse members are arranged, so that the roadbed filling material and the support members are integrated, and roadbed filling settlement is reduced; the comfort of the road is improved.

3) The vertical member can be constructed in sections, high and large templates are not needed, the templates can be conveniently transported and assembled, the types of the templates are favorably reduced, and the repeated utilization is facilitated.

Drawings

Fig. 1 is a schematic view of a light backfill material retaining structure according to the present invention.

Fig. 2 is a schematic diagram of a construction segment erecting member and a reinforcing steel bar reserving step.

Fig. 3 is a schematic view illustrating a step of constructing a bottom cross member and filling a lightweight roadbed material.

Fig. 4 is a schematic view of the steps of constructing the vertical member segments and the middle cross members and filling the light roadbed material.

FIG. 5 is a schematic view showing steps of constructing segments of the vertical members, filling the pavement structure, and installing the retaining wall.

FIG. 6 is a schematic illustration of the steps of joining left and right upright members to form a unitary structure.

Fig. 7 is a schematic size diagram of an embodiment.

In the drawings, 1, a vertical member segment; 2. longitudinal ribs; 3. transverse ribs; 4. ribs and diagonal ribs; 5. a cross member; 6. a guardrail; 7. and (4) a convex structure.

Detailed Description

The utility model is further described with reference to the following figures and specific examples.

The first embodiment is as follows:

the application mainly aims at the contradictory requirements of the existing retaining wall on the bearing capacity and the anti-collision function of the foundation, and provides a supporting structure under a light backfilling material under the condition that the light backfilling material is filled.

Referring to fig. 1, a light backfill material retaining structure comprises upright members and cross members 5 transversely connecting the upright members; the vertical component is divided into a plurality of vertical component sections 1 from top to bottom; in the vertical member, a vertical member segment 1 positioned at the bottom and at least one vertical member segment 1 positioned at the middle are respectively and fixedly connected with the cross member 5; light roadbed filling materials are filled between the adjacent cross members 5 and between the uppermost cross member 5 and the pavement structure.

In this embodiment, referring to fig. 1, the cross member 5 is connected to the corresponding connected upright member segments 1 in an inclined manner by and embedded in the inclined ribs 4.

In this embodiment, referring to fig. 1, a plurality of longitudinal ribs 2 are disposed inside the vertical member segment 1, a plurality of transverse ribs 3 are disposed inside the transverse member 5, and the ribs or diagonal ribs 4 are fixedly connected with the longitudinal ribs 2 and the transverse ribs 3.

Continuing to refer to fig. 1, the upper portion of the cross member 5 is provided with a raised structure 7 at intervals.

Continuing with fig. 1, each of the raised structures 7 is equally spaced.

In this embodiment, the longitudinal bars 2 and the transverse bars 3 are steel bars or steel structures.

In this embodiment, the protruding structure 7 is concrete or steel plate.

It should be noted that:

1. the vertical member segments are segmented according to the height of the retaining wall.

2. The diaphragm quantity can increase and decrease according to crashproof design requirement.

3. The vertical supporting shelves and the rest reinforcing bars of the bottom plate meet the conventional reinforcing bar requirement.

4. The specific length dimension is calculated according to design verification. If the road width is narrower, the left retaining wall and the right retaining wall can be connected to form an integral structure.

Description of example dimensions:

referring to fig. 7, the thickness of the retaining wall vertical component can be 15 cm-25 cm; the thickness of the cross member can be 20 cm-40 cm. The thickness of the vertical member and the transverse member is calculated.

The height of the vertical member can be divided into sections according to 80-120 cm, and the sections can be divided according to construction requirements.

The cross member is provided at least two places, one place is at the bottom of the upright member, and the other place is approximately arranged under the road surface structure near the middle upper part of the upright member. The number of cross member settings can be adjusted based on the results of the check.

Referring to fig. 2-5, the construction method comprises the following specific steps:

s1, firstly, cutting off the construction vertical support structure according to the design height, and reserving longitudinal through long ribs, ribbed ribs, transverse connecting ribs and transverse through long ribs on the vertical support;

s2, constructing a horizontal bottom structure, and filling corresponding light roadbed materials;

and S3, constructing the next section, embedding the ribs and the horizontal structure. Repeating the steps in sequence until the last layer is formed.

S4, filling pavement materials, constructing a surface layer structure, and installing an anti-collision guardrail.

The branch structure is suitable for the ground ramp of an elevated road in a soft soil area and a high earth-filled road section at the bridge head of a river-crossing bridge. The soft soil subgrade in coastal cities is widely distributed and has a large area. With the increase of investment of capital construction, the method has value of popularization and utilization after the deepening research.

Example two:

referring to fig. 6, the difference from the first embodiment is: the light backfill material supporting structures on the left side and the right side are connected together, and the left side and the right side form an integral supporting structure to enhance the anti-collision capability of the section. The method is suitable for the condition of narrow section width.

The rest is the same as the first embodiment.

The above are two preferred embodiments of the present invention, and those skilled in the art can make various changes or modifications based on the above description, which are within the scope of the present invention as claimed.

Claims

1. The utility model provides a light backfill material retaining structure which characterized in that:

comprises a vertical component and a cross component (5) which is transversely connected with the vertical component;

the vertical component is divided into a plurality of vertical component sections (1) from top to bottom;

in the vertical component, a vertical component section (1) positioned at the bottom and at least one vertical component section (1) positioned in the middle are respectively and fixedly connected with the cross component (5);

light roadbed filling materials are filled between the adjacent cross members (5) and between the uppermost cross member (5) and the pavement structure.

2. The lightweight backfill material retaining structure of claim 1, wherein: the cross member (5) is connected with the corresponding vertical member sections (1) in an inclined manner through ribs and inclined ribs (4) embedded in the ribs.

3. The lightweight backfill material retaining structure of claim 2, wherein: the vertical member segment (1) is internally provided with a plurality of longitudinal ribs (2), the cross member (5) is internally provided with a plurality of transverse ribs (3), and the ribs or the inclined ribs (4) are fixedly connected with the longitudinal ribs (2) and the transverse ribs (3).

4. The lightweight backfill material retaining structure of claim 1, wherein: the upper part of the cross member (5) is provided with convex structures (7) at intervals.

5. The lightweight backfill material retaining structure of claim 3, wherein: the longitudinal bars (2) and the transverse bars (3) are steel bars or steel structures.

6. The lightweight backfill material retaining structure of claim 1, wherein: the upper part of the vertical member segment (1) positioned at the top is fixedly connected with a guardrail (6).

7. The lightweight backfill material retaining structure of claim 4, wherein: the protruding structures (7) are arranged at equal intervals.

8. The lightweight backfill material retaining structure of claim 4, wherein: the protruding structures (7) are made of concrete or steel plates.