Anti-settlement structure for reconstruction and expansion soft foundation section of expressway

Abstract

The utility model discloses an expressway reconstruction and expansion soft foundation road section anti-settlement structure which comprises a longitudinal connecting batten, a transverse supporting batten, a longitudinal connecting batten, a transverse supporting batten, a longitudinal connecting batten and a transverse supporting batten, wherein the transverse supporting batten is welded below the longitudinal connecting batten; a splicing mechanism for connecting firmness is arranged above the longitudinal connecting battens; and an anti-sedimentation improving mechanism for enhancing the supporting strength is arranged above the transverse supporting plate strip. According to the anti-sedimentation structure for the reconstruction and expansion soft foundation road section of the expressway, the longitudinal connecting battens can be effectively spliced and lengthened by arranging the splicing mechanism, so that the connecting area of the longitudinal connecting battens and the hard subbase side can be enlarged, the connecting firmness can be greatly enhanced, meanwhile, the anti-sedimentation mechanism is arranged, and the anti-sedimentation effect is improved. By arranging the supporting bracket, the firmness of concrete pouring in the supporting bracket can be greatly enhanced, so that the supporting area and strength of a soft soil foundation can be increased, in addition, a stabilizing mechanism is arranged, the connecting stability of the longitudinal connecting battens and the hard subbase side can be enhanced, and the connecting firmness of the longitudinal connecting battens and the hard subbase side can be further enhanced.

Description

Technical Field

[0001] This utility model relates to the field of civil engineering technology, specifically to an anti-settlement structure for soft soil sections of highway reconstruction and expansion. Background Technology

[0002] With the continuous growth of transportation demand, the number of highway reconstruction and expansion projects is increasing. Soft soil sections are a common challenge during highway reconstruction and expansion. Soft soil foundations have low bearing capacity and high compressibility, making them prone to uneven settlement under the splicing of new and old roadbeds and vehicle loads. This can lead to road surface cracking, misalignment, and other defects, affecting the normal use and driving safety of the highway, and increasing subsequent maintenance costs. While various anti-settlement structures are currently available for highway reconstruction and expansion projects on soft soil sections, some shortcomings still exist.

[0003] For example, Chinese utility model patent CN222631973U discloses a settlement prevention structure for soft soil sections of highway reconstruction and expansion. This structure includes an expansion connecting anchor bolt section and a soft soil base support section. The anchor bolt is fixedly connected to the hard base side within the expansion pit, and longitudinal connecting strips with transverse support strips welded to their lower ends are connected to the anchor bolt. This facilitates the connection between the expanded section and the original highway section during soft soil expansion. Simultaneously, a support bracket is welded to the transverse support strips, and concrete is poured into the expansion pit with the support brackets. A base mesh is fixedly welded between adjacent transverse support strips, providing support for the poured concrete. Furthermore, the transverse support strips connected to the longitudinal connecting strips are pulled by the longitudinal connecting strips, resulting in better settlement prevention for soft soil sections.

[0004] The existing technologies mentioned above have the following technical problems: while anchors can be fixedly connected in the expanded foundation pit by setting longitudinal connecting strips, the longitudinal connecting strips cannot be spliced ​​in length, which is a design deficiency. At the same time, the design of pouring concrete into the support bracket to enhance the stability of the support bracket is also insufficient. Therefore, we propose a settlement prevention structure for soft soil sections of highway reconstruction and expansion to solve the problems mentioned above. Utility Model Content

[0005] The purpose of this utility model is to provide a settlement prevention structure for soft soil sections of highway reconstruction and expansion, in order to solve the problems mentioned in the background art. Currently, the existing settlement prevention structures for soft soil sections of highway reconstruction and expansion, combined with the actual production and processing, use longitudinal connecting strips to fix the anchors in the expansion pit. However, the longitudinal connecting strips cannot be spliced ​​in length, which is a design deficiency. At the same time, there are also problems such as insufficient design for pouring concrete into the support bracket to enhance the stability of the support bracket.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a settlement prevention structure for soft soil sections in highway reconstruction and expansion projects, comprising:

[0007] A longitudinal connecting strip is provided, and a transverse support strip is welded to the lower part of the longitudinal connecting strip, and a base mesh is welded to the inner side of the transverse support strip.

[0008] Also includes:

[0009] A splicing mechanism for ensuring a firm connection is provided above the longitudinal connecting strip;

[0010] Above the horizontal support strip is a mechanism to enhance the support strength and prevent settlement.

[0011] Preferably, the splicing mechanism provided above the longitudinal connecting strip includes a locking groove, a locking block, a limiting block, a threaded rod, and a splicing strip. The locking groove is provided above the longitudinal connecting strip, and the locking block is locked inside the locking groove. The splicing strip is fixedly installed above the locking block. The limiting block is tightly fitted to the outside of the locking block, and the limiting block is rotatably connected to the upper outer side of the longitudinal connecting strip. The limiting block and the locking block are fixedly connected by the threaded rod.

[0012] Preferably, the anti-settlement lifting mechanism provided above the horizontal support strip includes a support bracket and a grouting port. The support bracket is welded above the horizontal support strip, and the grouting port is provided above the support bracket.

[0013] Preferably, the lifting anti-settlement mechanism provided above the horizontal support strip further includes a moving block, a spring, a support rod, a locking block, and a locking groove. The moving block is provided at the upper interior of the support bracket, and a support rod is provided between the lower part of the moving block and the lower interior of the support bracket. The support rod is slidably provided at equal angles on the inner side of the support bracket, and a locking block is provided below the moving block. A locking groove is provided at the lower interior of the support bracket.

[0014] Preferably, the longitudinal connecting strip has fixing holes at equal intervals on its front side.

[0015] Preferably, the internal thread of the fixing hole is connected to the anchor, and the anchor is fixedly connected to the hard foundation.

[0016] Preferably, both the longitudinal connecting strip and the splicing strip have a fixing block inside, and the fixing block has a fixing frame welded inside, and the fixing frame is arranged in an "X" shape.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows: The anti-settlement structure for soft soil sections of highway reconstruction and expansion, by setting up a splicing mechanism, can effectively splice and lengthen the longitudinal connecting strips, thereby expanding the area of ​​the longitudinal connecting strips connected to the hard subgrade side, which can greatly enhance the connection firmness. At the same time, the anti-settlement mechanism can greatly enhance the firmness of the concrete pouring in the support bracket, thereby increasing the support area and strength of the soft soil foundation. In addition, the stabilizing mechanism can strengthen the stability of the connection between the longitudinal connecting strips and the hard subgrade side, thereby further strengthening the connection firmness.

[0018] 1. Anchors are provided. By driving the anchors into the hard base side in the expanded foundation pit according to the design position and spacing, the anchors are set inside the longitudinal connecting strips. The length of the longitudinal connecting strips can be spliced ​​and lengthened, thereby expanding the connection area between the longitudinal connecting strips and the hard base side.

[0019] 2. It is equipped with horizontal support strips and support brackets. Support brackets are welded on the top of the horizontal support strips at the designed intervals. Concrete can be poured into the inside of the support brackets. The support rods set at equal angles inside can slide outwards, thereby increasing the support area and strength for soft soil foundations.

[0020] 3. A base mesh is installed. The base mesh is welded to the inside of the cross support strips. All intersections of the reinforcing bars of the base mesh are welded. This can effectively distribute the upper load, reduce the settlement of the soft soil foundation, and improve the anti-settlement effect of soft soil road sections.

[0021] 4. It is equipped with fixing blocks and fixing frames. Fixing blocks are set inside both the longitudinal connecting strips and the splicing strips. At the same time, fixing frames are welded inside the fixing blocks, which can further strengthen the connection between the longitudinal connecting strips and the rigid base side.

[0022] 5. The overall setup is convenient to construct. The structure is simple, and the components are connected by welding. The construction technology is mature, which facilitates on-site construction operations, improves construction efficiency, and shortens the construction period. Attached Figure Description

[0023] Figure 1 This is a perspective structural diagram of the present invention;

[0024] Figure 2 This is a perspective view of the connection structure of the horizontal support strip, support bracket and base mesh of this utility model;

[0025] Figure 3 This is a perspective view of the connection structure of the locking block, limiting block, and splicing strips of this utility model;

[0026] Figure 4This is a perspective view of the connection structure of the longitudinal connecting strips, the locking block, and the splicing strips of this utility model;

[0027] Figure 5 This is a perspective view of the connection structure of the moving block, the card block, and the card slot of this utility model;

[0028] Figure 6 This is a perspective view of the connection structure of the support bracket, the movable block, and the support rod of this utility model.

[0029] In the diagram: 1. Longitudinal connecting strip; 2. Fixing hole; 3. Anchor; 4. Transverse support strip; 5. Support bracket; 6. Base mesh; 7. Engaging groove; 8. Engaging block; 9. Limiting block; 10. Threaded rod; 11. Splicing strip; 12. Fixing block; 13. Fixing frame; 14. Grouting port; 15. Moving block; 16. Spring; 17. Support rod; 18. Locking block; 19. Locking groove. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Please see Figures 1-6 This utility model provides a technical solution:

[0032] To address the problems existing in the prior art, this embodiment provides the following technical solution: a settlement prevention structure for soft soil sections of highway reconstruction and expansion, comprising: longitudinal connecting strips 1; a splicing mechanism located above the longitudinal connecting strips 1, allowing splicing strips 11 to be spliced ​​above the longitudinal connecting strips 1, thereby effectively splicing and lengthening the longitudinal connecting strips 1, thus increasing the area of ​​connection between the splicing strips 11 and the hard subgrade; a settlement-improving mechanism located above the transverse support strips 4, which strengthens the internal casting of the transverse support strips 4, thereby enhancing the support area and strength for the soft soil foundation; and a stabilizing mechanism located inside the longitudinal connecting strips 1 and the splicing strips 11, which further enhances the stability of the connection between the longitudinal connecting strips 1 and the hard subgrade.

[0033] Before construction, preparations must be made. In the reconstruction and expansion of soft soil sections of highways, the site must first be leveled and surveyed to determine the location and size of the expansion pit. The necessary materials must be prepared, such as anchors 3, longitudinal connecting strips 1, transverse support strips 4, support brackets 5, foundation mesh 6, and concrete, etc. The quality of the materials must be inspected to ensure that they meet the design requirements.

[0034] like Figure 1 , Figure 3 and Figure 4 As shown, fixing holes 2 are set at equal intervals inside the longitudinal connecting strip 1. Anchors 3 can be threaded into the fixing holes 2. In the expanded foundation pit, the anchors 3 are driven into the hard foundation side according to the design position and spacing. Special piling equipment is used to control the driving depth and verticality to ensure that the anchors 3 are firmly fixed in the hard foundation. Then, nuts are installed on the anchors 3. The anchors 3 are made of high-strength metal material, such as Q345 steel, which has good tensile and shear resistance. Its shape is a column with a sharp end, which is easy to drive into the hard foundation. By cooperating with the nuts, the anchors 3 can be firmly fixed in the hard foundation.

[0035] By creating a locking groove 7 inside the upper part of the longitudinal connecting strip 1, the locking groove 7 can engage with the locking block 8 installed below the splicing strip 11. At the same time, a limiting block 9 is set on the upper outer side of the longitudinal connecting strip 1. After the locking groove 7 and the locking block 8 are engaged, the limiting block 9 can be rotated inward to fit against the outer side of the locking block 8. Then, the threaded rod 10 is inserted into the locking block 8 and the limiting block 9 to tighten and limit the position. This can effectively increase the length of the longitudinal connecting strip 1, thereby expanding the area of ​​the longitudinal connecting strip 1 connected to the rigid base side, which can greatly enhance the firmness of the connection.

[0036] Secondly, fixing blocks 12 are installed inside both the longitudinal connecting strip 1 and the splicing strip 11, and fixing frames 13 are welded inside the fixing blocks 12, which can further strengthen the firmness of the connection between the longitudinal connecting strip 1 and the rigid base.

[0037] like Figure 1 , Figure 5 and Figure 6 As shown, a stable support structure is formed by welding a transverse support strip 4 to the lower end of the longitudinal connecting strip 1 vertically. Support brackets 5 can be welded to the upper part of the transverse support strip 4 according to the design spacing. The welding direction of the support brackets 5 must be perpendicular to the transverse support strip 4, and the welding must be firm to prevent loosening during subsequent construction and use. Secondly, a base mesh 6 is welded inside the transverse support strip 4. In addition, all the steel bar intersections of the base mesh 6 must be welded to ensure the integrity and strength of the base mesh 6. The base mesh 6 can support the poured concrete. At the same time, the transverse support strip 4 connected to the longitudinal connecting strip 1 can be pulled by the longitudinal connecting strip 1, which makes the anti-settlement effect of soft soil road sections better.

[0038] Meanwhile, a grouting port 14 is set above the support bracket 5. When the structure is installed, concrete can be poured. The pouring method can be adopted in layers. Vibration equipment is used to fully vibrate the concrete to ensure its density. During the pouring process, pay attention to the deformation of the structure and adjust it in time if there is any abnormality.

[0039] The poured concrete then enters the interior of the support bracket 5 through the grouting port 14. A movable block 15 is set at the top of the interior of the support bracket 5. The lower part of the movable block 15 is fixedly connected to the lower part of the interior of the support bracket 5 by a spring 16. When the movable block 15 is subjected to concrete pressure, it will move downward, thereby compressing the spring 16. As the movable block 15 moves downward, it will contact the support rod 17 that is equidistantly slidable inside the support bracket 5, pushing the support rod 17 outward. A locking block 18 is installed at the bottom of the movable block 15. As the movable block 15 moves downward, the locking block 18 will be firmly engaged with the locking groove 19 opened at the bottom of the interior of the support bracket 5. The compression of the spring 16 allows the concrete to slowly flow into the interior of the support bracket 5 for pouring. The removal of the support rod 17 can greatly enhance the firmness of the concrete pouring, thereby increasing the support area and strength for soft soil foundations.

[0040] After the concrete is poured, it is cured for no less than a certain number of days. Once the concrete reaches the design strength, subsequent highway pavement construction and other procedures can be carried out.

[0041] The working principle of the anti-settlement structure for the soft soil section of the highway reconstruction and expansion is as follows: By making the longitudinal connecting strips 1 splicable, the area of ​​the spliced ​​strips 11 connected to the hard subgrade can be expanded. At the same time, a support bracket 5 is set above the transverse support strips 4. The concrete entering the support bracket 5 can flow smoothly, and the support rods 17 set at equal angles inside the support bracket 5 will move outward, which can greatly enhance the firmness of the concrete pouring, thereby increasing the support area and strength of the soft soil foundation. Secondly, a fixing block 12 is set inside the longitudinal connecting strips 1 and the spliced ​​strips 11. The fixing bracket 13 can be welded inside the fixing block 12, which can further strengthen the firmness of the connection between the longitudinal connecting strips 1 and the hard subgrade.

[0042] Contents not described in detail in this specification are common knowledge to those skilled in the art. All standard parts used in this invention can be purchased commercially, and irregularly shaped parts can be custom-made according to the description and drawings. The specific connection methods for each part all employ conventional methods such as bolts, rivets, and welding, which are already mature in the prior art. The machinery, parts, and equipment all use conventional models from the prior art, and the circuit connections also employ conventional connection methods from the prior art, which will not be detailed here.

[0043] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A highway reconstruction soft foundation section anti-settlement structure, comprising: a longitudinal connecting plate strip (1), a horizontal supporting plate strip (4) is welded below the longitudinal connecting plate strip (1), and a bottom base net (6) is welded inside the horizontal supporting plate strip (4); characterized in that it further comprises: a splicing mechanism for connecting firmness is arranged above the longitudinal connecting plate strip (1); an improved anti-settlement mechanism for enhancing support strength is arranged above the horizontal supporting plate strip (4).

2. The anti-settling structure for expressway reconstruction and extension soft ground section according to claim 1, characterized in that: The splicing mechanism arranged above the longitudinal connecting plate strip (1) comprises a clamping groove (7), a clamping block (8), a limiting block (9), a threaded rod (10) and a splicing plate strip (11), the clamping groove (7) is arranged above the longitudinal connecting plate strip (1), the clamping block (8) is clamped and connected inside the clamping groove (7), the splicing plate strip (11) is fixedly installed above the clamping block (8), the limiting block (9) is tightly attached outside the clamping block (8), the limiting block (9) is rotationally connected to the upper outside of the longitudinal connecting plate strip (1), and the limiting block (9) and the clamping block (8) are fixedly connected by the threaded rod (10).

3. The anti-settling structure for expressway reconstruction and extension soft ground section according to claim 1, characterized in that: The improved anti-settlement mechanism arranged above the horizontal supporting plate strip (4) comprises a supporting bracket (5) and a grouting port (14), the supporting bracket (5) is welded above the horizontal supporting plate strip (4), and the grouting port (14) is arranged above the supporting bracket (5).

4. The anti-settling structure for the expressway reconstruction and extension soft ground section according to claim 3, characterized in that: The improved anti-settlement mechanism arranged above the horizontal supporting plate strip (4) further comprises a moving block (15), a spring (16), a supporting rod (17), a clamping block (18) and a clamping groove (19), the moving block (15) is arranged inside and above the supporting bracket (5), the supporting rod (17) is arranged between the lower side of the moving block (15) and the lower inside of the supporting bracket (5), the supporting rod (17) is arranged at equal angles inside the lateral side of the supporting bracket (5), the clamping block (18) is arranged below the moving block (15), and the clamping groove (19) is arranged in the lower inside of the supporting bracket (5).

5. The anti-settling structure for expressway reconstruction and extension soft ground section according to claim 1, characterized in that: Equidistantly arranged on the front side of the longitudinal connecting plate strip (1) are fixing holes (2).

6. The anti-settling structure for the expressway reconstruction and extension soft ground section according to claim 5, characterized in that: An anchor (3) is threadedly connected inside the fixing hole (2), and the anchor (3) is fixedly connected with a hard foundation.

7. The anti-settling structure for the soft ground section of the expanded highway according to claim 5, wherein: Fixed blocks (12) are arranged inside the longitudinal connecting plate strip (1) and the splicing plate strip (11), fixed frames (13) are welded inside the fixed blocks (12), and the fixed frames (13) are arranged in an "X" shape.

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