A method for repairing and replacing assembled pavement

Abstract

A method for repairing and replacing an assembled pavement, wherein the assembled pavement is formed by assembling a new type of tongue-and-groove assembled pavement panel having a rectangular plate body, force transmission rods are buried at intervals along the width direction at the two length direction side walls of the rectangular plate body, and the force transmission rods of two adjacent rectangular plates in the length direction are correspondingly welded and connected, so as to realize the assembly of the rectangular plates in the transverse direction of the pavement; wherein, corresponding connecting convex tenons and connecting grooves are respectively arranged on the left side wall and the right side wall in the width direction of the rectangular plate body of the type I pavement panel, and the connecting convex tenons are inserted into the connecting grooves of the rectangular plate body, so as to realize the assembly of two adjacent rectangular plates in the longitudinal direction of the pavement; and connecting grooves are arranged on the left side wall and the right side wall in the width direction of the rectangular plate body of the type II pavement panel, and a grouting material is poured and filled in the grouting connection cavity formed by the corresponding connecting grooves of the two adjacent rectangular plates to form a high-strength tenon, so as to realize the assembly of two adjacent rectangular plates in the longitudinal direction of the pavement.

Description

Technical Field

[0001] The invention relates to traffic roadbed facilities, and in particular to a method for repairing and replacing assembled road surfaces used for highways and airport roads. Background Art

[0002] The main disadvantage of traditional cast-in-place cement concrete pavement is that it is difficult to maintain. If the pavement is damaged and there are fractures, misalignment, cracks, etc. on the edges of the slabs, it is difficult to repair them quickly. Even if fast-setting and early-strength cement is used, it will take at least 8 to 10 hours to construct. It is impossible to open traffic quickly and it is difficult to meet the requirements of busy highway sections and non-stop flights at airports.

[0003] The most effective way to solve the above problems is to use prefabricated pavement technology. However, the development of prefabricated pavement technology has also brought us new challenges, one of the key points is how to solve the connection and load transfer problems between prefabricated pavement panels.

[0004] At present, the existing prefabricated concrete road panels are mostly connected by force transfer rods with mortise and tenon joints. Among them, the load transfer method of tongue and groove mortise and tenon joints can effectively improve the load transfer capacity and uniformity of force transfer of the joints. However, when some panels need to be replaced for maintenance, it is difficult to take out and put back the road surface due to the tight bite of the mortise and tenon joints between the panels. Therefore, it is difficult to repair the road panel again. Therefore, it has not been widely promoted and applied in prefabricated road surfaces. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a method for repairing and replacing an assembled pavement, which can fully utilize the load transfer advantages of the tongue and groove mortise and tenon joints and simultaneously realize the rapid replacement and repair of the tongue and groove assembled pavement panels.

[0006] The technical solution adopted by the present invention to solve the technical problem is as follows:

[0007] The present invention discloses a method for repairing and replacing an assembled pavement, wherein the assembled pavement is formed by assembling a new type of tongue-and-groove assembled pavement panel with a rectangular plate body, force transmission rods are buried at intervals along the width direction at the two length direction side walls of the rectangular plate body, and the force transmission rods of two adjacent rectangular plates in the length direction are correspondingly welded and connected, so as to realize the assembly of the rectangular plates in the transverse direction of the pavement; wherein, corresponding connecting convex tenons and connecting grooves are respectively arranged on the left side wall and the right side wall in the width direction of the rectangular plate body of the type I pavement panel, and the connecting convex tenons are inserted into the connecting grooves of the rectangular plate body, so as to realize the assembly of two adjacent rectangular plates in the longitudinal direction of the pavement; and connecting grooves are arranged on the left side wall and the right side wall in the width direction of the rectangular plate body of the type II pavement panel, and a grouting material is poured and filled into the grouting connection cavity formed by the corresponding connecting grooves of the two adjacent rectangular plates to form a high-strength tenon, so as to realize the assembly of two adjacent rectangular plates in the longitudinal direction of the pavement;

[0008] The repair and replacement method comprises the following steps:

[0009] S01. Cut along the width direction of the assembly seam between the damaged panel and the left side panel and the right side panel of the damaged panel, and remove the connecting tenons on the damaged panel and the right side panel of the damaged panel; cut along the length direction of the assembly seam between the damaged panel and the right side panel of the damaged panel, and remove the weld between the force transmitting rods on the side wall of the damaged panel and the right side panel of the damaged panel in the length direction;

[0010] S02. Lift and remove the damaged panel;

[0011] S03. Move the right side panel of the damaged panel to the right so that the connecting groove is separated from the connecting tenon of the second panel on the right side of the damaged panel, and lift the right side panel of the damaged panel upward to remove the damaged panel;

[0012] S04. Clean the connection groove on the left panel of the damaged panel and the connection tenon of the second panel on the right side of the damaged panel, and reprocess the bottom base of the vacated position;

[0013] S05. Install a replacement Type II panel on the right side of the vacated position, and after leveling, insert the connecting protrusion of the second panel on the right side of the damaged panel into the connecting groove on the right side of the replacement Type II panel; install a second replacement Type II panel on the left side of the vacated position, and after leveling, make the connecting grooves on both sides of the panel face the connecting grooves of the left side panel of the damaged panel and the replacement Type II panel respectively to form a grouting connection cavity;

[0014] S06. pouring cement mortar through the grouting holes of the replacement type II panel and the second replacement type II panel to form a filling layer under the diversion groove panel;

[0015] S07. Pour grouting material into the grouting connection cavity between the replacement type II panel and the second replacement type II panel, and between the second replacement type II panel and the left panel of the damaged panel to form a high-strength tenon, pour grouting material into the assembly seam in the width direction and press in the back seal to seal it;

[0016] S08. Weld the dowel bars between the replacement type II panel, the second replacement type II panel and the adjacent type I track panel in the length direction, pour caulking material into the assembly seam in the length direction and press in the back seal to seal it;

[0017] S09. Clean the gaps between the boards and fill them with waterproofing and sealing materials.

[0018] The beneficial effects of the present invention are mainly reflected in the following two aspects:

[0019] 1. The load transfer efficiency is significantly improved. The two types of tongue-and-groove prefabricated pavement panels involved can give full play to the load transfer advantages of the tongue-and-groove mortise and tenon joints, improve the load transfer efficiency and uniformity of the pavement panels, effectively ensure the comfort of passengers when cars and airplanes pass by, and reduce the probability of damage to the edges of the prefabricated pavement panels;

[0020] 2. Maintenance and replacement are convenient and fast. The two types of tongue-and-groove prefabricated road panels can fully utilize the load transfer advantages of the tongue-and-groove mortise and tenon joints, while also enabling rapid replacement and maintenance of the tongue-and-groove assembled road panels, further improving construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] This specification includes the following twenty-two drawings:

[0022] Figure 1 It is a front view of an I-type panel in a novel tongue-and-groove assembled road panel of the present invention;

[0023] Figure 2 It is a top view of an I-type panel in a novel tongue-and-groove assembled road panel of the present invention;

[0024] Figure 3 is along Figure 1 Sectional view along line AA;

[0025] Figure 4 It is a front view of a type II panel in a new type of tongue-and-groove assembled road panel of the present invention;

[0026] Figure 5 It is a top view of a type II panel in a new type of tongue-and-groove assembled road panel of the present invention;

[0027] Figure 6 It is a partial enlarged view of the connecting tenon in a new type of tongue-and-groove assembled road panel of the present invention;

[0028] Figure 7 It is a partial enlarged view of a connecting groove in a novel tongue-and-groove assembled road panel of the present invention;

[0029] Figure 8 It is a structural diagram of a road surface assembled using a new type of tongue-and-groove assembled road panel of the present invention;

[0030] Fig. 9 It is a schematic diagram of the assembly structure of an I-type panel in a new type of tongue-and-groove assembled road panel of the present invention;

[0031] Fig.10 It is a schematic diagram of the assembly structure of type II panels in a new type of tongue-and-groove assembled road panel of the present invention;

[0032] Fig.11 It is a plan view of a dowel bar in a novel tongue-and-groove assembled road panel of the present invention;

[0033] Fig.12 is along Fig.11 Sectional view of the middle BB line;

[0034] Fig.13 It is a front view of a type II panel in a new type of tongue-and-groove assembled road panel of the present invention;

[0035] Figures 14a-14e It is a schematic diagram of the steps of the maintenance and replacement method of the pavement assembled with I-type panels;

[0036] Figures 15a-15d It is a schematic diagram of the steps of the maintenance and replacement method of the pavement assembled with type II panels;

[0037] The figure shows the components and corresponding marks: soil base 10, gravel water-stabilizing layer 11, filling layer 12, rectangular plate 20, side wall 21 in the length direction, left side wall 22a in the width direction, right side wall 22b in the width direction, connecting tenon 23, connecting groove 24, grouting hole 25, guide groove 26, working hole 27, force transmission rod 30, L-shaped steel plate 31, anchor steel bar 32, weld 33, height adjustment bolt 41, pad 42, caulking material 51, back seal 52, damaged panel X, left side panel of damaged panel X-1, right side panel of damaged panel X+1, second right side panel of damaged panel X+2, replacement type II panel N1, second replacement type II panel N2. DETAILED DESCRIPTION

[0038] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0039] Reference Figure 1 , Figure 2 , Figure 4 and Figure 5 The assembled road surface is formed by assembling a new type of tongue-and-groove assembled road panel with a rectangular plate body 20. The force transmission rods 30 are buried at intervals along the width direction at the two lengthwise side walls 21 of the rectangular plate body 20. The force transmission rods 30 of two adjacent rectangular plates 20 in the lengthwise direction are correspondingly welded and connected to realize the assembly of the rectangular plates 20 in the transverse direction of the road surface. Figure 1 , Figure 2 and Fig.14a , Type I road panel has corresponding connecting convex tenons 23 and connecting grooves 24 respectively arranged on the left side wall 22a in the width direction and the right side wall 22b in the width direction of the rectangular plate body 20, and the connecting convex tenons 23 are inserted into the connecting grooves 24 of the rectangular plate body 20 to realize the assembly of two adjacent rectangular plate bodies 20 in the longitudinal direction of the road surface; Figure 4 , Figure 5 and Fig.15aThe Type II road panel is provided with connecting grooves 24 on the left side wall 22a and the right side wall 22b in the width direction of the rectangular plate body 20. The grouting connection cavity formed by the connecting grooves 24 corresponding to the two adjacent rectangular plates 20 is filled with caulking material 51 to form a high-strength tenon, so as to realize the assembly of the two adjacent rectangular plates 20 in the longitudinal direction of the road surface. The two types of tongue-and-groove prefabricated road panels, Type I road panels and Type II road panels, can give full play to the load transfer advantages of the tongue-and-groove mortise and tenon joints, significantly improve the load transfer efficiency and uniformity of the road panels, effectively ensure the comfort of passengers when cars and airplanes pass by, and reduce the probability of damage to the edges of the prefabricated road panels.

[0040] Reference Figure 1 , Figure 2 and Fig.14a The road surface is assembled by Type I road panels, and the Type I road panels have a connecting tenon 23 on the left side wall 22a in the width direction, and a connecting groove 24 corresponding to the position of the connecting tenon 23 on the right side wall 22b in the width direction. Figure 6 and Figure 7 The cross-section of the connecting tenon 23 and the connecting groove 24 adopts a combination of a pair of parallel straight sections and an arc. The straight section can ensure that there is no height difference between two adjacent panels when the panel expands and contracts, and the arc section prevents stress concentration in the panel. Considering the board manufacturing error, a gap of about 2mm is reserved between the connecting tenon 23 and the connecting groove 24. When assembling, epoxy resin is applied to the connecting tenon 23 and the connecting groove 24 of the two adjacent panels respectively to make the panels fit together completely.

[0041] Reference Figure 4 , Figure 5 and Fig.15a The pavement can also be assembled from Type II pavement panels, which are provided with connecting grooves 24 on the left side wall 22a and the right side wall 22b in the width direction, and the positions of the connecting grooves 24 on both sides correspond to each other. The cross-sections of the connecting grooves 24 on both sides are in the form of a combination of a pair of parallel straight sections and arcs. After the Type II pavement panels are leveled by the height adjustment bolts 41, the connecting grooves 24 of the two adjacent Type II panels are relatively formed into a grouting connection cavity, and the grouting material 51 (such as high-strength micro-expansion cement mortar) is injected by injecting and withdrawing the pipe at the same time, and finally the backing strip 51 is pressed into the joint seam. In order to facilitate the replacement of damaged panels, before the assembly construction, an isolation membrane can be attached to the inner wall surface of the connecting groove 24, so that the high-strength tenon formed by the grouting does not fit the panel, so as to prevent the pavement panel from being squeezed and damaged by thermal expansion and contraction.

[0042] The bottom surface of the rectangular plate body 20 is provided with a concave guide groove 26, and the plate surface is provided with a grouting hole 25 connected to the guide groove 26. The cement mortar poured through the grouting hole 25 forms a solid filling layer 12 under the panel. Figure 1and Figure 4 The guide groove 26 can be a single groove extending along the lengthwise midline of the rectangular plate 20, with a grouting hole 25 disposed at each end (one end for grouting and the other end for exhaust). Fig.13 The guide grooves 26 may also be two, and the guide grooves 26 extend along the diagonal lines of the rectangular plate body 20 and intersect at the center of the rectangular plate body 20, and the grouting holes 25 are arranged at the intersection. Figure 1 , Figure 4 and Fig.13 In order to facilitate the assembly operation, operation holes 27 are arranged at intervals in the vertical and horizontal directions on the board surface, and the operation holes 27 serve as height adjustment holes and reserved holes for the installation of lifting sleeves.

[0043] Reference Fig.11 and Fig.12 The force transmission rod 30 is composed of an L-shaped steel plate 31 and an anchoring steel bar 32 welded thereto. The anchoring steel bar 32 and the main body of the L-shaped steel plate 31 are expected to be buried in the rectangular plate body 20, and the bottom plate surface of the L-shaped steel plate 31 is exposed from the longitudinal side wall 21 of the rectangular plate body 20. Fig.11 When the two rectangular plates 20 are assembled in the transverse direction of the road surface, the L-shaped steel plates 31 corresponding to the force transmission rods 30 of the two adjacent rectangular plates 20 in the length direction are welded and connected to form a weld 33 at the assembly seam in the length direction.

[0044] The method for repairing and replacing the assembled pavement of the present invention comprises the following steps:

[0045] S01. Cut the assembly seam along the width direction of the damaged panel X and the left panel X-1 of the damaged panel and the right panel X+1 of the damaged panel, and remove the connecting tenon 23 on the damaged panel X and the right panel X+1 of the damaged panel; cut the assembly seam along the length direction of the damaged panel X and the right panel X+1 of the damaged panel, and remove the weld 33 between the force transmitting rod 30 on the side wall 21 of the damaged panel X and the right panel X+1 of the damaged panel in the length direction;

[0046] S02. Lift and remove the damaged panel X;

[0047] S03. Move the right side panel of the damaged panel X+1 to the right, so that the connecting groove 24 is separated from the connecting tenon 23 of the second panel X+2 on the right side of the damaged panel, and lift the damaged panel upward to remove the right side panel X+1;

[0048] S04. Clean the connecting groove 24 on the left panel X-1 of the damaged panel, the connecting tenon 23 of the second panel X+2 on the right side of the damaged panel, and reprocess the bottom base of the vacant position;

[0049] S05. Install a replacement type II panel N1 on the right side of the vacated position, and after leveling, insert the connecting tenon 23 of the second panel X+2 on the right side of the damaged panel into the connecting groove 24 on the right side of the type II panel N1; install a second replacement type II panel N2 on the left side of the vacated position, and after leveling, make the connecting grooves 24 on both sides thereof correspond to the connecting grooves 24 of the panel X-1 on the left side of the damaged panel and the replacement type II panel N1 respectively to form a grouting connection cavity;

[0050] S06. By replacing the type II panel N1 and the second replacement type II panel N2, the grouting hole 25 is filled with cement mortar to form a filling layer 12 under the panel via the guide groove 26;

[0051] S07. Filling the grouting material 51 into the grouting connection cavity between the replacement type II panel N1 and the second replacement type II panel N2, and between the second replacement type II panel N2 and the left panel X-1 of the damaged panel to form a high-strength tenon, pouring the grouting material 51 into the assembly seam in the width direction and pressing the back seal 52 into it to seal it;

[0052] S08. Welding replacement type II panel N1, the second replacement type II panel N2 and the force transmission rod 30 between the adjacent type I road panels in the length direction, pouring the caulking material 51 into the longitudinal direction of the assembly seam and pressing the back seal 52 to seal it;

[0053] S09. Clean the gaps between the boards and fill them with waterproofing and sealing materials.

[0054] It can be seen that the two types of tongue-and-groove prefabricated road panels of the present invention can both give full play to the load transfer advantages of the tongue-and-groove mortise and tenon joints, and at the same time can realize the rapid replacement and maintenance of the tongue-and-groove assembled road panels, further improving the construction efficiency.

[0055] The above description is only to illustrate some principles of a method for repairing and replacing an assembled pavement of the present invention, and is not intended to limit the present invention to the specific structure and applicable scope shown and described. Therefore, all corresponding modifications and equivalents that may be used are within the scope of the patent applied for by the present invention.

Claims

1. A method for repairing and replacing an assembled pavement, wherein the assembled pavement is formed by assembling a novel tongue-and-groove assembled pavement panel having a rectangular plate body (20), force transmission rods (30) are buried at intervals along the width direction at two lengthwise side walls (21) of the rectangular plate body (20), and the force transmission rods (30) of two adjacent rectangular plate bodies (20) in the lengthwise direction are correspondingly welded and connected to realize the assembly of the rectangular plate bodies (20) in the transverse direction of the pavement; wherein: The Type I road panel has corresponding connecting protrusions (23) and connecting grooves (24) respectively arranged on the left side wall (22a) and the right side wall (22b) in the width direction of the rectangular plate body (20), and the connecting protrusions (23) are inserted into the connecting grooves (24) of the rectangular plate body (20), so that the two adjacent rectangular plates (20) can be assembled in the longitudinal direction of the road surface; the Type II road panel has connecting grooves (24) both arranged on the left side wall (22a) and the right side wall (22b) in the width direction of the rectangular plate body (20), and a grouting material (51) is poured into the grouting connection cavity formed by the corresponding connecting grooves (24) of the two adjacent rectangular plates (20) to form a high-strength tenon, so that the two adjacent rectangular plates (20) can be assembled in the longitudinal direction of the road surface; The repair and replacement method comprises the following steps: S01. Cut the assembly seam along the width direction of the damaged panel (X) and the left side panel (X-1) and the right side panel (X+1) of the damaged panel, and remove the connecting tenons (23) on the damaged panel (X) and the right side panel (X+1); cut the assembly seam along the length direction of the damaged panel (X) and the right side panel (X+1), and remove the weld (33) between the force transmitting rods (30) on the side walls (21) of the damaged panel (X) and the right side panel (X+1) in the length direction; S02. Lift up and remove the damaged panel (X); S03. The right side panel (X+1) of the damaged panel is translated to the right, so that the connecting groove (24) is separated from the connecting tenon (23) of the second panel (X+2) on the right side of the damaged panel, and the right side panel (X+1) of the damaged panel is lifted upward to be removed; S04. Clean the connecting groove (24) on the left panel (X-1) of the damaged panel, the connecting tenon (23) on the second panel (X+2) on the right side of the damaged panel, and reprocess the bottom base of the vacated position; S05. Lay a Type II panel (N1) on the right side of the vacant position, and after leveling, insert the connecting protruding tenon (23) of the second panel (X+2) on the right side of the damaged panel into the connecting groove (24) on the right side of the Type II panel (N1); Lay a second Type II panel (N2) on the left side of the vacant position, and after leveling, make the connecting grooves (24) on both sides thereof correspond to the connecting grooves (24) of the panel (X-1) on the left side of the damaged panel and the Type II panel (N1) respectively to form a grouting connection cavity; S06. pouring cement mortar through the grouting holes (25) of the type II panel (N1) and the second type II panel (N2) to form a filling layer (12) under the panel via the diversion groove (26); S07. Pour grouting material (51) into the grouting connection cavity between the type II panel (N1) and the second type II panel (N2), and between the second type II panel (N2) and the left side panel (X-1) of the damaged panel to form a high-strength tenon, pour grouting material (51) into the assembly seam in the width direction and press in the back seal strip (52) to seal it; S08. Welding the dowel bars (30) between the type II panel (N1), the second type II panel (N2) and the type I panel adjacent in the length direction, pouring the caulking material (51) into the assembly seam in the length direction and pressing the back seal (52) into it to seal it; S09. Clean the gaps between the boards and fill them with waterproofing and sealing materials.

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