CN116856458A - Reinforced concrete retaining wall with horizontal supporting force provided by anchor cable and construction method thereof - Google Patents

Abstract

The invention discloses a reinforced concrete retaining wall with horizontal supporting force provided by anchor cables, which comprises a retaining wall, a cross beam, a support column, fixed pulleys, anchor cables and an anchorage device, wherein the lower end and the upper end of the support column are respectively fixed in soil bodies and on one end of the cross beam, and the other end of the cross beam is fixedly connected with the upper end of the retaining wall; the retaining wall and the cross beam are internally and fixedly provided with inner pipes, one end of the anchor cable is anchored in the soil body below the retaining wall, and the other end of the anchor cable sequentially passes through the inner pipes and then is tensioned and locked with the anchor device; the anchor cable is in clearance fit connection with the inner pipe; the fixed pulley is rotatably arranged in the retaining wall, and the anchor cable is bridged on the fixed pulley. A construction method is also disclosed. The anchor cable of the free section is anchored on the bearing plate after passing through the inner pipe and the fixed pulley, and the tensioning prestress of the anchor cable at one end of the beam far away from the retaining wall is converted into pressure to one end of the beam. The pressure is balanced with the active horizontal pressure of the soil body to the retaining wall, so that the capacity of the retaining wall for bearing the horizontal pressure is improved.

Description

Reinforced concrete retaining wall with horizontal supporting force provided by anchor cable and construction method thereof

Technical Field

The invention relates to a retaining wall, in particular to a reinforced concrete retaining wall with horizontal supporting force provided by anchor cables and a construction method thereof.

Background

The retaining wall is a structure for supporting the soil of the roadbed or the hillside soil and preventing the deformation and instability of the soil or the soil. At present, the retaining wall mainly comprises gravity type, anchor rod type, cantilever type, wall-supporting type, empty box type, sheet pile type and other forms.

When the top of the retaining wall is filled with soil too high, the soil can generate a large horizontal active soil pressure on the retaining wall, so that the retaining wall always bears the horizontal pressure generated by the large soil, and the retaining wall is easy to topple. To balance the horizontal pressure created by this soil mass, anchors/cables, elongated walls are typically used to strengthen or support at the wall. However, in places where the space is small, the existing reinforcing structure is difficult to construct, and after the construction is difficult to complete, the reinforcing structure has problems of poor anti-overturning capability and poor reinforcing effect.

Disclosure of Invention

The invention aims to solve the problems that in the existing places with smaller space, the reinforcing structure is difficult to construct and the reinforcing structure has poor anti-overturning capability and reinforcing effect after the construction is difficult to complete, and provides a reinforced concrete retaining wall with good anti-overturning capability and reinforcing effect and horizontal supporting force provided by anchor ropes and a construction method thereof.

The aim of the invention can be achieved by adopting the following technical scheme:

the reinforced concrete retaining wall comprises a retaining wall body, a cross beam, a support column, fixed pulleys, anchor ropes and an anchorage device, wherein the lower ends of the support columns are fixed in a soil body, the upper ends of the support columns are fixedly connected with the bottom surface of one end of the cross beam, and the other end of the cross beam is fixedly connected with the upper end of the retaining wall; the retaining wall and the cross beam are internally and fixedly provided with inner pipes, one end of each anchor cable is anchored in soil below the retaining wall, and the other end of each anchor cable sequentially penetrates through the inner pipes of the retaining wall and the cross beam and then is tensioned and locked with an anchor; the anchor cable is in clearance fit connection with the inner pipe; the fixed pulleys are rotatably arranged inside the retaining wall, the fixed pulleys are arranged at the junction between the inner pipe of the retaining wall and the inner pipe of the cross beam, and the anchor cable is bridged on the fixed pulleys.

As a preferable scheme, a bearing plate is arranged between the anchor and the end face of the beam.

As a preferable scheme, a supporting beam is arranged on the bottom surface of one end of the cross beam connected with the retaining wall.

As a preferred scheme, the retaining wall, the cross beam and the support column are poured together through concrete.

As a preferable scheme, the fixed pulley is sleeved with an isolation cover.

A construction method of a reinforced concrete retaining wall with horizontal supporting force provided by anchor cables comprises the following steps:

s1, extending one end of an anchor cable into a drilled hole in a soil body, and sealing and grouting the hole to anchor the anchor cable in the soil body;

s2, fixedly mounting the inner pipe in a reinforced frame of a retaining wall beam, and rotatably mounting the fixed pulley at the joint between the inner pipe of the retaining wall and the inner pipe of the beam;

s3, enabling the other end of the anchor cable to sequentially penetrate through the inner tube of the retaining wall and the inner tube of the cross beam and bridge the fixed pulley, and then pouring the retaining wall, the cross beam and the support column;

and S4, tensioning and locking one end of the anchor cable penetrating out of the cross beam with the anchor cable after penetrating through the bearing plate.

In a preferred embodiment, in step S3, the anchor cable is connected to the inner tube in a clearance fit manner.

The implementation of the invention has the following beneficial effects:

according to the invention, the anchor cable of the free section is anchored on one end of the beam far away from the retaining wall after passing through the inner pipe and the fixed pulley by applying tensioning prestress to the anchor cable on the ground anchoring section, and the tensioning prestress of the anchor cable on one end of the beam far away from the retaining wall is converted into pressure on one end of the beam. The pressure and the active horizontal pressure of the soil body to the retaining wall are balanced, namely, the stretching prestress of the anchor cable is transferred to one end of the beam far away from the retaining wall, so that the capacity of the retaining wall for bearing the horizontal pressure is improved, the problem that the top of the retaining wall is overturned due to the active horizontal pressure is solved, the space on the back of the wall is not occupied, the retaining wall can be reinforced, and the space is greatly saved.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic view of the construction of a reinforced concrete retaining wall of the present invention with horizontal support provided by anchor lines.

Fig. 2 is a longitudinal cross-sectional view of fig. 1 along the center line of the cross-beam.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Examples

Referring to fig. 1 and 2, the present embodiment relates to a retaining wall, which comprises a retaining wall 1, a beam 2, a support column 3, a fixed pulley 4, an anchor rope 5 and an anchor 6, wherein the lower end of the support column 3 is fixed in soil, the upper end of the support column 3 is fixedly connected with the bottom surface of one end of the beam 2, and the other end of the beam 2 is fixedly connected with the upper end of the retaining wall 1; the retaining wall 1 and the cross beam 2 are internally and fixedly provided with inner pipes 7, one ends of the anchor cables 5 are anchored in soil below the retaining wall 1, and the other ends of the anchor cables 5 sequentially penetrate through the inner pipes 7 of the retaining wall 1 and the inner pipes 7 of the cross beam 2 and then are tensioned and locked together with the anchor 6; the anchor cable 5 is in clearance fit connection with the inner pipe 7; the fixed pulley 4 is rotatably arranged inside the retaining wall 1, the fixed pulley 4 is arranged at the joint between the inner pipe 7 of the retaining wall 1 and the inner pipe 7 of the cross beam 2, and the anchor cable 5 is bridged on the fixed pulley 4.

The device is characterized in that the anchor cable 5 in the free section is anchored at one end of the beam 2 far away from the retaining wall 1 after passing through the inner pipe 7 and the fixed pulley 4 by stretching prestress applied to the anchor cable 5 in the ground anchoring section, and the stretching prestress of the anchor cable 5 at one end of the beam 2 far away from the retaining wall 1 is converted into pressure to one end of the beam 2. The pressure and the active horizontal pressure of the soil body to the retaining wall 1 are balanced, namely, the stretching prestress of the anchor cable is transferred to one end of the beam 2 far away from the retaining wall 1, so that the capacity of the retaining wall 1 for bearing the horizontal pressure is improved, the problem that the wall top of the retaining wall 1 is overturned due to the active horizontal pressure is solved, the space on the back of the wall is not occupied, the retaining wall 1 can be reinforced, and the space is greatly saved.

A bearing plate 8 is arranged between the anchor 6 and the end face of the beam 2. The inner tube 7 is made of steel material.

The bottom surface of one end of the cross beam 2 connected with the retaining wall 1 is provided with a support beam 9. The support beam 9 serves to improve the torsion resistance of the cross beam 2.

The retaining wall 1, the cross beam 2 and the support columns 3 are poured together through concrete. The support column 3 is used for supporting the cross beam 2.

An isolation cover is sleeved outside the fixed pulley 4. The cage is used to prevent the fixed pulley 4 from being concreted and not freely rotated.

A construction method of a reinforced concrete retaining wall 1 provided with horizontal supporting force by anchor lines 5, comprising the steps of:

s1, extending one end (an anchoring section 51) of an anchor cable 5 into a drilled hole in a soil body, and sealing and grouting the hole to anchor the anchor cable 5 in the soil body;

s2, fixedly mounting the inner pipe 7 in a reinforced frame of the beam 2 of the retaining wall 1, and rotatably mounting the fixed pulley 4 at the joint between the inner pipe 7 of the retaining wall 1 and the inner pipe 7 of the beam 2;

s3, enabling the other end (free section) of the anchor cable 5 to sequentially penetrate through the inner pipe 7 of the retaining wall 1 and the inner pipe 7 of the cross beam 2 and bridge over the fixed pulley 4, and then pouring the retaining wall 1, the cross beam 2 and the support column 3; the anchor cable 5 is in clearance fit connection with the inner pipe 7. And brushing antirust paint on the free section of the anchor cable 5, wherein the anchor cable is uniformly and thickly coated, and no leakage point exists.

And S4, tensioning and locking one end of the anchor cable 5 penetrating out of the beam 2 with the anchor cable 5 after penetrating through the bearing plate 8.

According to the method, tension prestress is applied to the anchor cable 5 on the ground anchoring section, the anchor cable 5 on the free section is anchored on the bearing plate 8 after passing through the inner pipe 7 and the fixed pulley 4, and the tension prestress of the anchor cable 5 at one end of the beam 2 far away from the retaining wall 1 is converted into pressure on one end of the beam 2. The pressure and the active horizontal pressure of the soil body on the retaining wall 1 are balanced, the capacity of the retaining wall 1 for bearing the horizontal pressure is improved, the problem that the wall top of the retaining wall 1 is overturned due to the active horizontal pressure is solved, and the stability and the safety of the whole structure are improved.

The above disclosure is only a preferred embodiment of the present invention, and it is needless to say that the scope of the invention is not limited thereto, and therefore, the equivalent changes according to the claims of the present invention still fall within the scope of the present invention.

Claims (7)

1. The reinforced concrete retaining wall is characterized by comprising a retaining wall, a cross beam, a support column, fixed pulleys, an anchor rope and an anchorage device, wherein the lower end of the support column is fixed in soil, the upper end of the support column is fixedly connected with the bottom surface of one end of the cross beam, and the other end of the cross beam is fixedly connected with the upper end of the retaining wall; the retaining wall and the cross beam are internally and fixedly provided with inner pipes, one end of each anchor cable is anchored in soil below the retaining wall, and the other end of each anchor cable sequentially penetrates through the inner pipes of the retaining wall and the cross beam and then is tensioned and locked with an anchor; the anchor cable is in clearance fit connection with the inner pipe; the fixed pulley is rotatably arranged inside the retaining wall, the fixed pulley is arranged at the joint between the inner pipe of the retaining wall and the inner pipe of the cross beam, and the anchor cable is connected to the fixed pulley.

2. The reinforced concrete retaining wall of claim 1, wherein the anchor is provided with a bearing plate between the anchor and the end face of the cross beam.

3. A reinforced concrete retaining wall provided with horizontal supporting force by anchor lines according to claim 1, wherein the bottom surface of one end of a cross member connected to the retaining wall is provided with a supporting beam.

4. The reinforced concrete retaining wall of claim 1 wherein the retaining wall, cross members and support posts are concrete cast together.

5. The reinforced concrete retaining wall of claim 1, wherein the outer portion of the fixed sheave is sleeved with a cage.

6. A construction method of a reinforced concrete retaining wall provided with horizontal supporting force by anchor lines according to any one of claims 1 to 5, comprising the steps of:

s1, extending one end of an anchor cable into a drilled hole in a soil body, and sealing and grouting the hole to anchor the anchor cable in the soil body;

s2, fixedly mounting the inner pipe in a reinforced frame of a retaining wall beam, and rotatably mounting the fixed pulley at the joint between the inner pipe of the retaining wall and the inner pipe of the beam;

s3, enabling the other end of the anchor cable to sequentially penetrate through the inner tube of the retaining wall and the inner tube of the cross beam and bridge the fixed pulley, and then pouring the retaining wall, the cross beam and the support column;

and S4, tensioning and locking one end of the anchor cable penetrating out of the cross beam with the anchor cable after penetrating through the bearing plate.

7. The method for constructing a reinforced concrete retaining wall with horizontal support provided by anchor lines according to claim 6, wherein in the step S3, the anchor lines are connected to the inner pipe in a clearance fit manner.