CN116065434A - Lap joint structure of lightweight foam soil fill and roadbed - Google Patents

Abstract

The invention discloses an overlapping joint structure of lightweight foam soil filling and roadbed, relates to the technical field of road surface construction, including an original roadbed, a new roadbed and a plurality of lap joint components used to connect the original roadbed and the new roadbed, wherein : the side of the original subgrade facing the new subgrade is provided with a plurality of steps, and the plurality of overlapping components are set in one-to-one correspondence with the plurality of steps, and the two ends of the overlapping components are respectively fixedly connected with the steps and the new subgrade; the overlapping The components include a lap joint frame and a movable strip, and the two ends of the lap joint frame are respectively fixedly connected with the steps and the new roadbed. The invention is novel in design and simple in operation. Through the setting of the overlapping frames, multiple steps are set on the original roadbed. The number of the overlapping frames is the same as the number of steps, and the specifications of the overlapping frames conform to the corresponding steps. Use the overlapping frame to connect the original subgrade and the new subgrade horizontally to ensure that there will be no cracks between the original subgrade and the new subgrade after long-term use.

Description

Lap joint structure of lightweight foam soil fill and roadbed

technical field

The invention relates to the technical field of road surface construction, in particular to an overlapping structure of lightweight foam soil filling and roadbed.

Background technique

Foamed cement light soil, through the foaming system of the foaming machine, the foaming agent is fully foamed by mechanical means, and the foam is evenly mixed with the cement slurry, and then the pumping system of the foaming machine is used for cast-in-place construction or mold forming , a new type of lightweight thermal insulation material containing a large number of closed pores formed by natural conservation. It belongs to the bubble-like thermal insulation material, and its outstanding feature is that it forms closed foam holes inside the concrete, which makes the concrete lightweight and thermally insulated. The use of foam cement light soil can widen or repair the road surface.

The subgrade is the foundation of the track or road surface, and it is a geotechnical structure formed after excavation or filling. With the development of society, the width of the existing roadbed cannot meet the traffic demand, so the existing roadbed needs to be widened or repaired.

When using foam cement light soil to widen or repair the original roadbed, steps are generally provided on the original roadbed, and the setting of steps increases the contact area with the new roadbed, thereby improving the relationship between the original roadbed and the new roadbed. The connection of the splicing surface of the new subgrade, but only using the setting of steps, cannot guarantee the horizontal connection force and the vertical connection force between the original subgrade and the new subgrade. There will be relative settlement with the original roadbed, which will affect the use.

Contents of the invention

The purpose of the present invention is to provide an overlapping joint structure of lightweight foam soil filling and roadbed.

The technical problem solved by the present invention is:

(1), in the prior art, when connecting between the original roadbed and the new roadbed, the connection contact area is simply increased by the steps arranged on the original roadbed, but this setting has no effect on the original roadbed and the new roadbed. The horizontal connection force between them is poor, and after long-term use, cracks are likely to occur between the new roadbed and the original roadbed;

(2) At the same time, when connecting the original roadbed with the new roadbed, there is no longitudinal connection force between the new roadbed and the original roadbed, and then after the new roadbed is connected with the original roadbed, During long-term use, the relative settlement between the new roadbed and the original roadbed is easy to occur.

The purpose of the present invention can be achieved through the following technical solutions:

An overlapping structure of light foam soil fill and roadbed, including the original roadbed, new roadbed and multiple overlapping components for connecting the original roadbed and the new roadbed, wherein: the side of the original roadbed faces the new roadbed A plurality of steps are provided, and a plurality of overlapping assemblies are provided in one-to-one correspondence with the plurality of steps, and both ends of the overlapping assemblies are respectively fixedly connected to the steps and the new subgrade;

The overlapping assembly includes an overlapping frame and a movable strip, and the two ends of the overlapping frame are fixedly connected to the steps and the new roadbed respectively, and a plurality of connecting strips are arranged on the inner side of the overlapping frame, and the plurality of connecting strips are parallel to each other. Arrangement, and a gap is formed between any two adjacent connecting strips; the movable strip is detachably installed on multiple connecting strips, the movable strip is set to be multiple, and the gap between any adjacent two movable strips Adjustable distance;

The overlapping assembly also includes a longitudinal connecting piece, the longitudinal connecting piece is arranged on the overlapping frame, and the longitudinal connecting piece is used for connecting any two adjacent overlapping frames.

As a further solution of the present invention: the movable strips are arranged along the length direction of the vertically connected strips.

As a further solution of the present invention: the bottom of the movable strip is fixedly connected with a plurality of fixed blocks, the plurality of fixed blocks are arranged along the length direction of the movable strip, and the size of the fixed block is the same as that between any two adjacent connected strips. Match the size of the gap formed between them.

As a further solution of the present invention: the longitudinal connector includes a rotating rod and a fixed pin arranged on the same side of the overlapping frame, one end of the rotating rod is rotatably mounted on the side of the overlapping frame, and the other end of the rotating rod is provided with a A groove, the fixing pin is fixedly installed on the side of the overlapping frame, and the outer circumference of the fixing pin matches the size of the groove.

As a further solution of the present invention: the overlapping assembly further includes a plurality of fixing pieces, and a plurality of fixing pieces are arranged on the overlapping frame, and the fixing pieces include a ground anchor, and a sleeve is arranged on the grasping anchor Two L-shaped rods are fixedly installed on the outer circumference of the ring, and a clamping area with a fixed distance is formed between the L-shaped rods and the ring, and the width of the connecting strip matches the size of the clamping area .

As a further solution of the present invention: the ground anchor is provided with an external thread, the inside of the collar is provided with an internal thread matching the external thread, and the collar is installed on the ground anchor through the internal thread.

As a further solution of the present invention: there are two rotating rods and fixing pins located on the same side of the overlapping frame, and the two fixing pins are located between the two rotating rods.

Compared with prior art, the beneficial effect of the present invention is:

1. Through the setting of lap frames, there are multiple steps on the original roadbed. The number of lap frames set is the same as the number of steps, and the specifications of the lap frames are in line with the corresponding steps. There is a horizontal connection between the subgrade and the new subgrade to ensure that there will be no cracks between the original subgrade and the new subgrade after long-term use;

2. By setting the vertical connector on the lap frame, after using the lap frame to connect the steps and the new subgrade horizontally, any two adjacent lap frames can be longitudinally connected through the longitudinal connector, Make the two overlapping frames have a longitudinal connection force, ensure the overall stability of the new subgrade, and prevent relative settlement between the new subgrade and the original subgrade;

3. Through the setting of the fixing parts, for the fixing between the lap joint frame and the steps, the height of the collar on the grip anchor rod can be adjusted, and then the clamping formed between the L-shaped rod and the outer circumference of the collar can be adjusted. The height of the area on the ground anchor rod is convenient for the clamping area to adapt to different steps to fix the overlapping frame at different depths.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings.

Fig. 1 is the sectional structure schematic diagram of the present invention;

Fig. 2 is a schematic diagram 1 of the overall structure of the lap joint frame in the present invention;

Fig. 3 is a schematic diagram of the overall structure of the lap joint frame II in the present invention;

Fig. 4 is a schematic diagram three of the overall structure of the lap joint frame in the present invention;

Fig. 5 is a schematic diagram of an enlarged structure at A in Fig. 2;

Fig. 6 is a schematic diagram of the overall structure of the movable bar in the present invention;

Fig. 7 is a schematic diagram of the overall structure of the first embodiment of the fixing member in the present invention;

Fig. 8 is a schematic diagram of the overall structure of the second embodiment of the fixing member in the present invention;

Fig. 9 is a schematic diagram of the overall structure of the original roadbed in the present invention.

In the figure: 1. Original subgrade; 2. New subgrade; 3. Lap joint component; 4. Step; 5. Lap joint frame; 6. Movable strip; 7. Connecting strip; 8. Fixed block; Rod; 10, fixed pin; 11, groove; 12, fixed piece; 13, ground anchor; 14, collar; 15, L-shaped rod; 16, external thread; 17, base layer; 18, gravel bottom Base; 19. Cement stabilized gravel base; 20. Foam cement light soil layer.

Detailed ways

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 creative efforts fall within the protection scope of the present invention.

Embodiment one:

As shown in Fig. 1-Fig. 7 and Fig. 9, a kind of overlapping structure of lightweight foam soil filling and subgrade, including original subgrade 1 and new subgrade 2, is arranged between original subgrade 1 and new subgrade 2. A lap assembly 3, the lap assembly 3 is used to increase the fixed connection between the original roadbed 1 and the new roadbed 2, to ensure that there is a horizontal connection force and a vertical connection force between the original roadbed 1 and the new roadbed 2, During the use of the original subgrade 1 and the new subgrade 2, ensure that there are no cracks and no relative settlement between the two.

As shown in Figure 1 and Figure 9, a plurality of steps 4 are provided on the side of the original roadbed 1 facing the new roadbed 2, specifically three steps 4 are set, and correspondingly, there are three overlapping groups, 3, The three overlapping components 3 are respectively provided in one-to-one correspondence with the three steps 4 , and the two ends of the overlapping components 4 are fixedly connected to the steps 4 and the new roadbed 2 respectively. Multiple overlapping components 3 can be set with corresponding specifications according to the actual overlapping positions. As shown in FIG. 1 , the specifications of the set overlapping components 3 become larger sequentially from bottom to top.

The above-mentioned overlapping assembly 3 includes an overlapping frame 5 and a plurality of movable strips 6, and the inner side of the overlapping frame 5 is fixedly connected with a plurality of connecting strips 7, and a plurality of connecting strips 7 are arranged in parallel, and a plurality of connecting strips are arranged at the same time. The strips 7 are evenly arranged on the inner side of the overlapping frame 5, and a gap of fixed size is formed between any two adjacent connecting strips 7; , multiple movable strips 6 can be installed on the connecting strips 7, and the distance between any two adjacent movable strips 6 can be adjusted. This setting can make the overlapping frame 5 set on different steps 4, It can carry different types of construction materials without material leakage, and the number of movable strips 6 can be set according to actual needs. At the same time, with the setting of the lap joint frame 5, the two ends of the lap joint frame 5 are fixedly connected with the steps 4 and the new roadbed 2 respectively. The horizontal connection force ensures that there will be no cracks between the original roadbed 1 and the new roadbed 2. As shown in FIG. 1 , the three overlapping frames 5 are enlarged from bottom to top according to the corresponding scale.

As shown in Figure 3 and Figure 6, in order to facilitate the smooth sliding of the movable strip 6 on the connected strip 7, for the position setting between the movable strip 6 and the connecting strip 7, the movable strip 6 can be set to connect vertically The length direction of strip 7 is arranged; the bottom of movable strip 6 is fixedly connected with a plurality of fixed blocks 8 simultaneously, and a plurality of fixed blocks 8 is arranged along the length direction of movable strip 6, and a plurality of fixed blocks 8 are evenly arranged, and fixed block The size of 8 is adapted to the size of the gap formed between any two adjacent connecting strips 7 mentioned above, and then the fixed block 8 can be inserted into the gap, and when construction materials are added above it, the movable strip 6 It is relatively stable with the connecting strip 7, which further ensures that the construction materials carried on it will not leak.

The overlapping assembly 3 in the above also includes a longitudinal connector, which is arranged on the overlapping frame 5, and when a plurality of overlapping frames 5 are arranged on the corresponding step 4, the longitudinal connecting member can connect any adjacent The longitudinal connection between the two overlapping frames 5 ensures the force of the longitudinal connection between the two overlapping frames 5 and ensures that no relative settlement occurs between the original roadbed 1 and the new roadbed 2 .

Specifically, the longitudinal connector includes a rotating rod 9 and a fixed pin 10 arranged on the same side of the overlapping frame 5, one end of the rotating rod 9 is rotatably mounted on the side of the overlapping frame 5, and the other end of the rotating rod 9 is provided with a groove 11. Regarding the setting of the fixing pin 10 , the fixing pin 10 is fixedly installed on the side of the overlapping frame 5 . When a plurality of overlapping frames 5 are arranged on the corresponding steps 4, the rotating rod 9 on the overlapping frame 5 below can be driven to rotate, so that the groove 11 on the rotating rod 9 can be clamped on the overlapping frame 5 above. On the fixed pin 10, through the rotating rod 9 of the lower lap frame 5 and the fixed pin 10 of the upper lap frame 5, the upper and lower two lap frames 5 are longitudinally connected, so that the upper and lower two lap frames 5 There is a longitudinal connection force between them. In order to better enhance the longitudinal connecting force between the upper and lower two overlapping frames 5, two rotating rods 9 and fixed pins 10 positioned on the same side of the overlapping frame 5 are set to two, and the two fixed pins 10 are located at the same side of the overlapping frame 5. Between the two rotating rods 9, during use, the same side of the upper overlapping frame 5 can be longitudinally connected by the two rotating rods 9 on the lower overlapping frame 5, and the force is even.

As shown in Fig. 2 and Fig. 5 and Fig. 7, in order to ensure that the two ends of the lapping frame 5 are respectively connected stably with the steps 4 and the new subgrade 2, the lapping assembly 3 is set to also include a plurality of fixing parts 12, a plurality of The fixing pieces 12 are evenly arranged on the overlapping frame 5 , and when the overlapping frame 5 needs to be fixed to the step 4 , the fixing piece 12 can be used to connect the overlapping frame 5 and the step 4 . Specifically, the fixing part 12 includes a ground anchor rod 13, a collar 14 is fixedly arranged on the ground anchor rod 13, and two L-shaped rods 15 are fixedly installed on the outer circumference of the collar 14, wherein the L-shaped rod 15 and the sleeve Between the outer circumferences of the rings 14, a clamping area with a fixed distance is formed, and the size of the clamping area is set to match the width of the connecting strip 7, and then when the overlapping frame 5 is arranged on the step 4, the staff can place the The ground anchor rod 13 is inserted into the gap formed by any two adjacent connecting strips 7, and the two adjacent connecting strips 7 will be respectively placed in the two clamping areas. When the staff drives the ground anchor During the downward movement of the rod 13 , the clamping area will press and lock the connecting strip 7 , and under the action of multiple fixing parts 12 , the overlapping frame 5 will be stably locked on the step 4 .

Embodiment two:

The difference between this embodiment and Embodiment 1 is that, as shown in FIG. 8 , an external thread 16 is provided on the ground anchor rod 13 , and an internal thread is provided on the inner side of the collar 14 , and the internal thread matches the external thread 16 . Further, the collar 14 is installed on the ground anchor 13 through an internal thread, and when it is necessary to utilize the ground anchor 13 to fix the lap frame 5, the collar 14 can be adjusted on the ground anchor 13 according to the difference of the steps 4 position, that is, the height of the clamping area formed between the L-shaped bar 15 and the outer circumference of the collar 14 is adjusted on the ground anchor rod 13, so that the clamping area can adapt to different steps. 4 pairs of overlapping frames 5 Fixation at different depths.

The working principle of the present invention: when carrying out the overlapping of original subgrade 1 and new subgrade 2, three steps 4 can be set up on one side of original subgrade 1, and the corresponding step 4 can be laid on the direction of three steps 4 from bottom to top. Construction materials, after the corresponding construction materials are laid, the base layer 17, the crushed stone base layer 18, the cement stabilized crushed stone base layer 19 and the foam cement light soil layer 20 are successively formed, and the formed base layer 17, the crushed stone base layer 18, The cement stabilized crushed stone base 19 and the foam cement light soil layer 20 constitute the new subgrade 2, and the three steps 4 are called the first step, the second step and the third step from bottom to top. Wherein the base layer 17 is flush with the first step, then place the overlapping frame 5 above the base layer 17 and the first step, then install a plurality of movable strips 6 on the overlapping frame 5, and a plurality of movable strips 6 The quantity is set according to the construction materials to be laid on it, and according to the setting of the number of movable strips 6, the distance formed between any two adjacent movable strips 6 can be changed to facilitate the carrying of the construction materials to be applied above it, and then use Grab the ground anchor rod 13 and install it on the first step and the base layer 17 evenly around the lap frame 5; The formed crushed stone subbase 18 is flush with the second step, then place another specification lap frame 5 above the crushed stone subbase 18, and install a corresponding number of movable strips 6 on the lap frame 5, any relative The distance set between the adjacent two movable strips 6 can carry the construction material to be laid above it, and then use the ground anchor 13 to fix the lap frame 5 on the second step and the gravel subbase 18, after the fixation is completed , the rotating rod 9 on the lower overlapping frame 5 can be rotated at a corresponding angle, so that the groove 11 on the rotating rod 9 is stuck in the overlapping frame 5 just after the fixing is completed (that is, the overlapping frame in the middle shown in FIG. 1 on the fixed pin 10 on the frame) so that a longitudinal connection force can be generated between the frame 5 and the frame 5 below it; then corresponding construction materials are laid on the second frame 5 to form Cement-stabilized macadam base 19, the formed cement-stabilized macadam base 19 is flush with the third step and then a lap frame 5 is placed above the cement-stabilized macadam base 19, and a corresponding number of movable parts are installed on the lap frame 5 The strip 6, the distance set between any two adjacent movable strips 6 can carry the construction material to be laid above it, and then use the ground anchor 13 to fix the lap frame 5 on the third step and the cement stabilized macadam On the base layer 19, after the fixing is completed, the rotating rod 9 on the middle overlapping frame 5 is rotated at a corresponding angle, so that the groove 11 on the rotating rod 9 is stuck on the overlapping frame 5 (that is, shown in Fig. 1 shown on the fixed pin 10 on the upper overlapping frame), so that a longitudinal connection force can be generated between the overlapping frame 5 and the overlapping frame 5 below it; then the third overlapping frame 5. Corresponding construction materials are laid on the top to form the foam cement lightweight soil layer 20, that is, to complete the overlapping of the original roadbed 1 and the new roadbed 2.

An embodiment of the present invention has been described in detail above, but the content described is only a preferred embodiment of the present invention, and cannot be considered as limiting the implementation scope of the present invention. All equivalent changes and improvements made according to the application scope of the present invention shall still belong to the scope covered by the patent of the present invention.

Claims (7)

1. A light foam soil fill and roadbed lap joint structure is characterized in that it comprises the original roadbed (1), the new roadbed (2) and is used to connect the original roadbed (1) and the new roadbed (2) a plurality of overlapping components (3), wherein: the side of the original roadbed (1) facing the new roadbed (2) is provided with a plurality of steps (4), and the plurality of overlapping components (3) and the plurality of steps (4 ) are set in one-to-one correspondence, and the two ends of the lap assembly (3) are fixedly connected to the step (4) and the new roadbed (2) respectively; The overlapping assembly (3) includes an overlapping frame (5) and a movable strip (6), and the two ends of the overlapping frame (5) are fixedly connected with the steps (4) and the new roadbed (2) respectively, and the overlapping The inner side of the frame (5) is provided with a plurality of connection strips (7), the plurality of connection strips (7) are arranged in parallel, and a gap is formed between any adjacent two connection strips (7); the movable strip ( 6) It is detachably installed on multiple connecting strips (7), the movable strips (6) are set in multiples, and the distance between any two adjacent movable strips (6) is adjustable; The overlapping assembly (3) also includes a longitudinal connecting piece, which is arranged on the overlapping frame (5), and the longitudinal connecting piece is used to connect any two adjacent overlapping frames (5). 2. The overlapping structure of lightweight foam soil filling and roadbed according to claim 1, characterized in that, the movable strips (6) are arranged along the length direction of the vertically connected strips (7). 3. The overlapping structure of a kind of lightweight foam soil filling and roadbed according to claim 2, characterized in that, the bottom of the movable strip (6) is fixedly connected with a plurality of fixed blocks (8), more A fixed block (8) is arranged along the length direction of the movable strip (6), and the size of the fixed block (8) is adapted to the size of the gap formed between any two adjacent connecting strips (7). 4. A kind of overlapping structure of lightweight foam soil filling and roadbed according to claim 3, characterized in that, said longitudinal connector comprises a rotating rod (9) arranged on the same side of the overlapping frame (5) ) and a fixed pin (10), one end of the rotating rod (9) is rotated and mounted on the side of the lap frame (5), and the other end of the rotating rod (9) is provided with a groove (11), and the fixed pin ( 10) It is fixedly installed on the side of the overlapping frame (5), and the outer circumference of the fixed pin (10) matches the size of the groove (11). 5. The overlapping structure of a kind of lightweight foam soil filling and roadbed according to any one of claims 1-4, characterized in that, the overlapping assembly (3) also includes a plurality of fixing parts (12 ), a plurality of fixing parts (12) are arranged on the overlapping frame (5), and the fixing parts (12) include a ground anchor (13), and a collar ( 14), two L-shaped bars (15) are fixedly installed on the outer circumference of the collar (14), and a clamping area with a fixed distance is formed between the L-shaped bars (15) and the collar (14), and the connection length is The width of the bar (7) is adapted to the size of the clamping area. 6. The overlapping structure of a kind of lightweight foam soil filling and roadbed according to claim 5, characterized in that, the ground anchor (13) is provided with an external thread (16), and the collar (14 ) inside is provided with the internal thread that is compatible with the external thread (16), and the collar (14) is installed on the ground anchor rod (13) by the internal thread. 7. The overlapping structure of a kind of lightweight foam soil filling and roadbed according to claim 4, characterized in that, the rotating rod (9) and the fixed pin ( 10) are all set to two, and two fixed pins (10) are positioned between two rotating rods (9).

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