CN113174799A - Precast concrete panel connecting structure and method based on bolt connection - Google Patents
Precast concrete panel connecting structure and method based on bolt connection Download PDFInfo
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- CN113174799A CN113174799A CN202110491900.0A CN202110491900A CN113174799A CN 113174799 A CN113174799 A CN 113174799A CN 202110491900 A CN202110491900 A CN 202110491900A CN 113174799 A CN113174799 A CN 113174799A
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C5/00—Pavings made of prefabricated single units
- E01C5/06—Pavings made of prefabricated single units made of units with cement or like binders
- E01C5/08—Reinforced units with steel frames
- E01C5/10—Prestressed reinforced units ; Prestressed coverings from reinforced or non-reinforced units
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C11/00—Details of pavings
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Abstract
The invention relates to a precast concrete panel connecting structure based on bolt connection and a method thereof, the structure comprises a bolt and two adjacent precast concrete panels, a first connecting piece mounting groove is arranged on the opposite surface of a first precast concrete panel, a second connecting piece mounting groove is arranged on the opposite surface of a second precast concrete panel, when the first precast concrete panel is spliced with the second precast concrete panel, at least one connecting piece mounting hole is enclosed between the first precast concrete panel and the second precast concrete panel, a first connecting piece and a second connecting piece are arranged in the connecting piece mounting hole, one part of the first connecting piece is embedded in the first precast concrete panel, one part of the second connecting piece is embedded in the second precast concrete panel, the first connecting piece and the second connecting piece are provided with bolt holes, the bolt is inserted into the bolt holes of the first connecting piece and the second connecting piece, the first precast concrete panel is connected with the second precast concrete panel. The invention has simple and convenient site construction process and short construction period.
Description
Technical Field
The invention belongs to the technical field of traffic engineering, and particularly relates to a precast concrete panel connecting structure and method based on bolt connection, in particular to an inter-plate connecting structure and method for quickly mounting a precast concrete panel in short-term rush-construction repair engineering of airport pavement, highway pavement or container yard.
Background
In today's society, the traffic industry is the cornerstone of economic development. The automobile, sea and air transportation depend on the service capacity of roads, container yards and airports, and are the life lines of passenger transportation logistics, and once the life lines are cut off, the life lines can greatly influence economic activities. The asphalt pavement surface treatment in the highway industry is convenient and quick, can be repaired in a short period, has small influence on economic activities, but the cement concrete pavement repair period is long, the working procedures are complex, and the passenger and freight transportation industry is seriously influenced. The assembly type technology has long-term development in the building industry due to short construction period and small influence on the surrounding environment, and is less applied in the adverse road industry, so that the problem of establishing a complete assembly type pavement quick-assembly quick-repair technical system is urgently needed to be solved. The key factors that restrict the speed of construction of fabricated pavements and the service life and flatness during operation are the manner of joint connection between the slabs.
The existing joint connection technology between plates applied to the fabricated concrete panel mainly comprises the traditional flat pull rod type and the micro-stress post-tensioning connection type. The traditional tie rod type is widely applied to cast-in-place cement concrete pavements, the traditional tie rod is pre-embedded during prefabrication, a hidden notch is reserved on the opposite side, and the tie rod type concrete pavements are directly and vertically installed during construction. Because the prefabricated plate reinforcing bar stretches out the plate, the transportation is troublesome, and the notch slip casting is difficult to be filled, and the board top notch back grout influences pleasing to the eye, and the cross-section weakens greatly, and the preparation is complicated.
The micro-stress post-tensioning connection technology is characterized in that a steel pipe or a corrugated pipe is reserved, a smooth steel bar with a screw cap is screwed into a reserved steel sleeve, and then pre-stress tensioning and pore grouting are performed. But the process is tedious and time-consuming, and when the plate is installed, a plurality of processes such as steel bar series connection, tensioning, grouting, anchor sealing and the like are required, so that the construction efficiency is low.
In conclusion, the traditional precast slab inter-plate joint connection mode has complex site construction process and long construction period, and cannot meet the requirement of pavement restoration period under the current economic high-speed development condition.
The traditional technology applied in the current pavement rush-construction repair engineering leaves main work on a construction site, so that the site procedures are complicated, and the construction period is increased. The rapid development of industrialization makes it possible to construct factory prefabrication complex which is no longer a factor restricting engineering schemes. And aiming at the special working conditions of rush-construction and rush-repair of important places such as highway trunks, wharfs, airports and the like, shortening of the field construction time is the most important restriction condition.
Therefore, the principle of the current road construction repair engineering is to exert the advantage of factory prefabrication as much as possible and reduce the field construction and installation time.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a precast concrete panel connecting structure and a precast concrete panel connecting method based on bolt connection.
The technical scheme of the invention is realized as follows: the invention discloses a precast concrete panel connecting structure based on bolt connection, which comprises a bolt and two adjacent precast concrete panels, wherein the opposite surface of a first precast concrete panel in the two adjacent precast concrete panels is provided with at least one first connecting piece mounting groove, the opposite surface of a second precast concrete panel in the two adjacent precast concrete panels is provided with at least one second connecting piece mounting groove, when the first precast concrete panel is spliced with the second precast concrete panel, the first connecting piece mounting groove on the opposite surface of the first precast concrete panel and the second connecting piece mounting groove on the opposite surface of the second precast concrete panel enclose at least one connecting piece mounting hole, at least one first connecting piece and at least one second connecting piece are arranged in the connecting piece mounting hole, one part of the first connecting piece is pre-buried and fixed in the first precast concrete panel, and a part of the second connecting piece is pre-buried and fixed in the second precast concrete panel, the first connecting piece and the second connecting piece are provided with bolt holes, and the bolts are inserted into the bolt holes of the first connecting piece and the second connecting piece to connect the first precast concrete panel with the second precast concrete panel.
Furthermore, the axial lead of a connecting piece mounting hole enclosed between two adjacent precast concrete panels is perpendicular to the upper end surfaces of the precast concrete panels, and the upper end of the connecting piece mounting hole penetrates through the upper end surfaces of the first precast concrete panel and the second precast concrete panel.
Further, the lower ends of the connecting piece mounting holes penetrate through the lower end faces of the first precast concrete panel and the second precast concrete panel.
Further, defining the first connecting piece or the second connecting piece positioned at the uppermost end of the connecting piece mounting hole as an upper connecting piece, wherein a bolt hole of the upper connecting piece is a through hole, and a bolt limiting device is arranged in the bolt hole of the upper connecting piece and used for axially limiting the upper end of a bolt; the bolt limiting device comprises a cushion block and a clamping ring, the cushion block is positioned in a bolt hole of the upper connecting piece and is positioned at the upper end of the bolt, the cushion block is limited by the clamping ring clamped in a clamping ring reserved groove, and a clamping ring reserved groove is formed in the hole wall of the bolt hole of the upper connecting piece; and a cast-in-place concrete structure is arranged in the upper end space of the upper connecting piece in the connecting piece mounting hole and used for sealing the connecting piece mounting hole.
Further, defining the first connecting piece or the second connecting piece positioned at the lowest end of the connecting piece mounting hole as a lower connecting piece, sealing the lower end of the plug pin hole of the lower connecting piece to form a blind hole for limiting the lower end of the plug pin, wherein the plug pin holes of other connecting pieces positioned in the connecting piece mounting hole are all through holes; the bolt is rod-shaped, and gaps are arranged between the outer wall of the bolt and the bolt holes of the first connecting piece and the second connecting piece.
Furthermore, tang cooperation concatenation between first precast concrete panel and the second precast concrete panel, a side of first precast concrete panel is equipped with concave tang, a side of second precast concrete panel is equipped with convex tang for with the concave tang cooperation of first precast concrete panel side.
Further, the first connecting piece comprises an embedded part embedded in the first precast concrete panel and a connecting part exposed out of the side surface of the first precast concrete panel and located in the first connecting piece mounting groove, and the second connecting piece comprises an embedded part embedded in the second precast concrete panel and a connecting part exposed out of the side surface of the second precast concrete panel and located in the second connecting piece mounting groove; the embedded part is rod-shaped; the cross section of the rod-shaped embedded part is square; the rod-shaped embedded part is provided with an external thread; the connecting portion is provided with a bolt hole used for being matched with a bolt.
Furthermore, two first connecting pieces and two second connecting pieces are arranged in the connecting piece mounting holes, and the two second connecting pieces are located between the two first connecting pieces.
The prefabricated concrete panel is a quadrilateral plate, a first side face of the quadrilateral plate is parallel to a third side face, a second side face of the quadrilateral plate is parallel to a fourth side face, when the quadrilateral plate is spliced in a direction parallel to the first side face and the third side face, the second side face of the quadrilateral plate is provided with at least one first connecting piece mounting groove, the fourth side face of the quadrilateral plate is provided with at least one second connecting piece mounting groove, when the quadrilateral plate is spliced in a direction parallel to the second side face and the fourth side face, the first side face of the quadrilateral plate is provided with at least one first connecting piece mounting groove, the third side face of the quadrilateral plate is provided with at least one second connecting piece mounting groove, at least one first connecting piece is fixed in the first connecting piece mounting groove, and at least one second connecting piece is fixed in the second connecting piece mounting groove.
Further, when the quadrilateral plate is spliced in the direction parallel to the first side and the third side, one short side of the quadrilateral plate is provided with a concave spigot, the other short side of the quadrilateral plate is provided with a convex spigot, when the quadrilateral plate is spliced in the width direction, one long side of the quadrilateral plate is provided with a concave spigot, and the other long side of the quadrilateral plate is provided with a convex spigot.
The invention discloses a precast concrete panel connecting method based on bolt connection, which comprises the following steps:
prefabricating the precast concrete panel and the bolt;
laying the precast concrete panels on a base layer, wherein at least one connecting piece mounting hole is formed between two adjacent precast concrete panels in a surrounding manner, at least one first connecting piece and at least one second connecting piece are arranged in the connecting piece mounting hole, a part of the first connecting piece is fixedly embedded in one precast concrete panel of the two adjacent precast concrete panels, and a part of the second connecting piece is fixedly embedded in the other precast concrete panel of the two adjacent precast concrete panels;
inserting bolts into the bolt holes of the first connecting piece and the second connecting piece in the connecting piece mounting holes to connect two adjacent precast concrete panels;
and grouting, filling and sealing in the mounting holes of the connecting pieces.
Furthermore, when the precast concrete panels are laid on the base layer, the two adjacent precast concrete panels are connected through the concave-convex rabbets.
And furthermore, defining the first connecting piece or the second connecting piece which is positioned at the uppermost end of the connecting piece mounting hole as an upper connecting piece, wherein the bolt hole of the upper connecting piece is a through hole, a clamp ring preformed groove is formed in the hole wall of the bolt hole of the upper connecting piece, after the bolt is inserted into the bolt holes of the first connecting piece and the second connecting piece in each connecting piece mounting hole, a cushion block is placed at the top of the bolt, and a clamp ring is clamped in the clamp ring preformed groove to limit the axial displacement of the bolt.
The invention has at least the following beneficial effects: the purpose of the patent is to provide a pin connection structure and a method between precast concrete panels, which is suitable for rapid rush-construction repair engineering of airport pavement, highway pavement or container yard, wherein the pin connection structure comprises a pin and two adjacent precast concrete panels, wherein, the opposite surface of the first precast concrete panel in the two adjacent precast concrete panels is provided with at least one first connecting piece installation groove, the opposite surface of the second precast concrete panel in the two adjacent precast concrete panels is provided with at least one second connecting piece installation groove, when the first precast concrete panel is spliced with the second precast concrete panel, the first connecting piece installation groove on the opposite surface of the first precast concrete panel and the second connecting piece installation groove on the opposite surface of the second precast concrete panel enclose at least one connecting piece installation hole, at least one first connecting piece and at least one second connecting piece are arranged in the connecting piece installation hole, and a part of the first connecting piece is fixed in the first precast concrete panel in a pre-buried manner, a part of the second connecting piece is fixed in the second precast concrete panel in a pre-buried manner, the first connecting piece and the second connecting piece are provided with bolt holes, and bolts are inserted into the bolt holes of the first connecting piece and the second connecting piece to connect the first precast concrete panel with the second precast concrete panel. The connecting structure is suitable for connecting precast concrete panels under various working conditions; the plate blocks have good force transmission and integrity; the plate is easy to replace when damaged, and the prefabricated plate can be replaced after the clamping ring, the cushion block and the bolt are taken out. The member has simple construction and short construction period, does not need surface reprocessing, overcomes the biggest defect of long construction period in the conventional pavement rush-construction repair engineering, can complete the rush-construction repair engineering of airport pavement, highway pavement or container yard in a short period, and greatly reduces the economic loss caused by road damage and traffic paralysis.
The connecting structure is divided into a male notch connecting piece connecting form, the structure is simple and clear, the installation is rapid, the panel can be locally and rapidly replaced after being damaged, and the process is simple. The connection between the plates is tight, the force transmission effect is good, the flatness is high, and the requirements of the specification on an airport pavement, a highway pavement or a container yard are met.
In a word, the bolt type precast concrete panel connecting structure is simple and clear, low in processing cost and high in construction and installation speed.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic front view of a precast concrete panel connection structure based on a latch connection according to an embodiment of the present invention;
FIG. 2 is a schematic plan view of a precast concrete panel connection structure based on a latch connection according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of an upper connecting member according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a lower connecting member according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a middle connection member according to an embodiment of the present invention;
FIG. 6 is a top view of FIG. 5;
FIG. 7 is a schematic view of the upper connecting member and the top end of the plug according to the embodiment of the present invention;
FIG. 8 is a schematic structural diagram of a spacer according to an embodiment of the present invention;
FIG. 9 is a schematic structural diagram of a snap ring according to an embodiment of the present invention;
FIG. 10 is a partial schematic view of a female end face of a precast concrete panel provided by an embodiment of the present invention;
fig. 11 is a partial schematic view of a male end face of a precast concrete panel according to an embodiment of the present invention.
In the attached drawing, 1 is last connecting piece, 2 is lower connecting piece, 3 is well connecting piece, 31 is pre-buried portion, 32 is connecting portion, 33 is the bolt hole, 4 is the bolt, 5 is the cushion, 6 is the snap ring, 7 is the snap ring reserve groove, 8 is first precast concrete panel, 81 is the female end socket, 82 is first connecting piece mounting groove, 9 is second precast concrete panel, 91 is the male end socket, 92 is second connecting piece mounting groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; in the description of the present invention, the meaning of "plurality" or "a plurality" is two or more unless otherwise specified.
Example one
Referring to fig. 1 to 11, an embodiment of the present invention provides a precast concrete panel connection structure based on a pin 4 connection, including a pin 4 and two adjacent precast concrete panels, wherein at least one first connector installation groove 82 is formed in an opposite surface of a first precast concrete panel 8 of the two adjacent precast concrete panels, at least one second connector installation groove 92 is formed in an opposite surface of a second precast concrete panel 9 of the two adjacent precast concrete panels, when the first precast concrete panel 8 is spliced with the second precast concrete panel 9, the first connector installation groove 82 in the opposite surface of the first precast concrete panel 8 and the second connector installation groove 92 in the opposite surface of the second precast concrete panel 9 enclose at least one connector installation hole in which at least one first connector and at least one second connector are disposed, and a part of the first connecting piece is fixed in the first precast concrete panel 8 in a pre-buried manner, a part of the second connecting piece is fixed in the second precast concrete panel 9 in a pre-buried manner, the first connecting piece and the second connecting piece are provided with bolt holes 33, and the bolts 4 are inserted into the bolt holes 33 of the first connecting piece and the second connecting piece to connect the first precast concrete panel 8 with the second precast concrete panel 9.
Furthermore, the axial lead of all the connecting piece mounting holes in the connecting piece mounting holes enclosed between two adjacent precast concrete panels is perpendicular to the upper end face of the precast concrete panel or is parallel to the upper end face of the precast concrete panel, or the axial lead of the existing connecting piece mounting hole in the connecting piece mounting hole enclosed between two adjacent precast concrete panels is perpendicular to the upper end face of the precast concrete panel, and the axial lead of the existing connecting piece mounting hole is parallel to the upper end face of the precast concrete panel; when the axial line of the connecting member mounting hole is perpendicular to the upper end surfaces of the first precast concrete panel 8 and the second precast concrete panel 9, the upper end of the connecting member mounting hole penetrates through the upper end surfaces of the first precast concrete panel 8 and the second precast concrete panel 9.
When the axial line of the connecting member mounting hole is parallel to the upper end surfaces of the first precast concrete panel 8 and the second precast concrete panel 9, the outer end of the connecting member mounting hole penetrates through the side surfaces of the first precast concrete panel 8 and the second precast concrete panel 9.
In this embodiment, when the axial line of the connector installation hole is perpendicular to the upper end surfaces of the first precast concrete panel 8 and the second precast concrete panel 9, the lower end of the connector installation hole penetrates through the lower end surfaces of the first precast concrete panel 8 and the second precast concrete panel 9.
Further, the first connecting piece comprises an embedded part 31 embedded in the first precast concrete panel 8 and a connecting part 32 exposed on the side surface of the first precast concrete panel 8 and located in the first connecting piece mounting groove 82, and the second connecting piece comprises an embedded part 31 embedded in the second precast concrete panel 9 and a connecting part 32 exposed on the side surface of the second precast concrete panel 9 and located in the second connecting piece mounting groove 92; the embedded part 31 is rod-shaped; the cross section of the rod-shaped embedded part 31 is square; the connecting portion 32 is provided with a latch hole 33 for cooperating with the latch 4. The connecting piece mounting hole is a circular hole, the outer wall of the connecting portion 32 of the embodiment is cylindrical, and the bolt hole 33 of the connecting portion 32 is a circular hole. The connecting portion 32 of each connecting member of the present embodiment is a hollow ring shape except for the lower connecting member 2. The pre-buried portion 31 of connecting piece is equipped with the external screw thread, prevents that the connecting piece from deviating from precast concrete panel.
Further, a first connecting piece or a second connecting piece which is positioned at the uppermost end or the outermost end of the connecting piece mounting hole is defined as an upper connecting piece 1, a bolt hole 33 of the upper connecting piece 1 is a through hole, and a bolt 4 limiting device is arranged in the bolt hole 33 of the upper connecting piece 1 and is used for axially limiting the upper end or the outer end of the bolt 4; the bolt 4 limiting device comprises a cushion block 5 and a clamp ring 6, the cushion block 5 is positioned in a bolt hole 33 of the upper connecting piece 1 and positioned at the upper end or the outer end of the bolt 4, the cushion block 5 is limited by the clamp ring 6 clamped into a clamp ring preformed groove 7, and the clamp ring preformed groove 7 is arranged on the wall of the bolt hole 33 of the upper connecting piece 1; a cast-in-place concrete structure is arranged in the space at the upper end or the outer end of the upper connecting piece 1 in the connecting piece mounting hole and used for sealing the connecting piece mounting hole. The snap ring pre-groove 7 of this embodiment is an annular groove. The snap ring 6 is an annular snap ring 6.
Furthermore, the first connecting piece or the second connecting piece which is positioned at the lowest end or the innermost end of the connecting piece mounting hole is defined as a lower connecting piece 2, the lower end or the inner end of a bolt hole 33 of the lower connecting piece 2 is sealed to form a blind hole or a groove shape, and the blind hole or the groove shape is used for limiting the lower end or the inner end of a bolt 4, namely the bolt 4 is supported; the bolt holes 33 of other connectors in the connector mounting holes are all through holes.
The bolt 4 is rod-shaped, and a gap is arranged between the outer wall of the bolt 4 and the bolt holes 33 of the first connecting piece and the second connecting piece, so that the requirement of plate expansion strain is met.
The bolt 4 of the embodiment is a steel bolt 4 rod.
Of course, when the lower ends of the connector installation holes do not penetrate through the first precast concrete panel 8 and the second precast concrete panel 9, the bolt holes 33 of the lower connector 2 may be through holes, and the lower ends of the bolts 4 may be supported on the first precast concrete panel 8 and the second precast concrete panel 9.
Further, tang cooperation concatenation between first precast concrete panel 8 and the second precast concrete panel 9, a side of first precast concrete panel 8 is equipped with concave tang 81, a side of second precast concrete panel 9 is equipped with convex tang 91 for cooperate with concave tang 81 of first precast concrete panel 8 side.
Furthermore, the precast concrete panel is a quadrilateral plate, the first side surface of the quadrilateral plate is parallel to the third side surface, the second side surface of the quadrilateral plate is parallel to the fourth side surface, when the quadrangular block is coupled in a direction parallel to the first and third sides, the second side of the quadrangular block is provided with at least one first connecting member mounting groove 82, the fourth side of the quadrangular block is provided with at least one second connecting member mounting groove 92, when the quadrilateral plate is spliced along the direction parallel to the second side and the fourth side, the first side of the quadrilateral plate is provided with at least one first connecting piece mounting groove 82, the third side of the quadrilateral plate is provided with at least one second connecting piece mounting groove 92, at least one first connecting piece is fixed in the first connecting piece mounting groove 82, and at least one second connecting piece is fixed in the second connecting piece mounting groove 92;
when the quadrilateral plate is spliced along the direction parallel to the first side and the third side, one short side of the quadrilateral plate is provided with the concave spigot 81, the other short side of the quadrilateral plate is provided with the convex spigot 91, when the quadrilateral plate is spliced along the width direction, one long side of the quadrilateral plate is provided with the concave spigot 81, and the other long side of the quadrilateral plate is provided with the convex spigot 91.
In this embodiment, two first connecting pieces and two second connecting pieces are arranged in the connecting piece mounting hole, and the two second connecting pieces are located between the two first connecting pieces.
In the embodiment, two adjacent edges of the precast concrete panel are set as concave front edge 81 edges, and the upper connecting piece 1 and the lower connecting piece 2 are embedded, and the distance between the upper connecting piece 1 and the lower connecting piece 2 is larger; the other two adjacent edges of the precast concrete panel are provided with convex seam allowances 91, and the two middle connecting pieces 3 are embedded; adjacent precast concrete panels are combined in a concave-convex mode, the connecting pieces 3 are inserted between the upper connecting piece 1 and the lower connecting piece 2, the steel bolts 4 are inserted after the precast concrete panels are installed, leveled and aligned, the round cushion blocks 5 are placed on the tops of the rods, the annular clamping rings 6 are placed in reserved clamping grooves of the upper connecting pieces 1 to limit vertical displacement of the bolts 4, a bolt 4-rod connecting device is formed, and grouting and sealing are conducted after installation is completed. The precast concrete panel may be provided with a plurality of 4-bar connectors for the bolts along each side, respectively.
The connecting structure is simple and convenient to construct, short in construction period and free of surface retreatment; the connecting structure is suitable for connecting precast concrete panels under various working conditions; the connecting structure ensures that the plates have good force transmission and integrity, and meets the requirement of the specification on the joint of the runway; when the plate is damaged, the prefabricated plate can be replaced simply after the annular clamping ring 6, the cushion block 5 and the steel bolt 4 are taken out.
Example two
Referring to fig. 1 to 11, the embodiment discloses a precast concrete panel connection method based on a latch 4 connection, which includes the following steps:
firstly, prefabricating a plurality of precast concrete panels in the first embodiment in a factory, prefabricating a steel bolt 4 rod, a cushion block 5 and an annular snap ring 6, and transporting and storing;
setting graded broken stone base course, cement stabilized broken stone base course, sand and pebble base course and existing pavement base course according to different working conditions;
laying precast concrete panels, connecting two adjacent precast concrete panels through concave-convex rabbets 91, enclosing at least one connecting piece mounting hole between the two adjacent precast concrete panels, arranging at least one first connecting piece and at least one second connecting piece in the connecting piece mounting hole, pre-embedding and fixing a part of the first connecting piece in one precast concrete panel of the two adjacent precast concrete panels, pre-embedding and fixing a part of the second connecting piece in the other precast concrete panel of the two adjacent precast concrete panels, leveling and grouting at the bottom of the slab;
inserting the bolts 4 into the bolt holes 33 of the first connecting piece and the second connecting piece in the mounting holes of the connecting pieces to connect the two adjacent precast concrete panels;
defining the first connecting piece or the second connecting piece positioned at the uppermost end of the connecting piece mounting hole as an upper connecting piece 1, wherein the bolt hole 33 of the upper connecting piece 1 is a through hole, a clamp ring preformed groove 7 is arranged on the hole wall of the bolt hole 33 of the upper connecting piece 1, after the bolt 4 is inserted into the bolt holes 33 of the first connecting piece and the second connecting piece in each connecting piece mounting hole, a cushion block 5 is placed at the top of the bolt 4, a clamp ring 6 is clamped in the clamp ring preformed groove 7, and the axial displacement of the bolt 4 is limited;
grouting, filling and sealing in the mounting holes of the connecting pieces;
and seventhly, when the panel is damaged, gaps between the damaged panel and surrounding plates are cleaned, the annular clamping ring 6, the cushion block 5 and the steel bolt 4 are taken out, the maintenance base layer is cleaned, the new prefabricated panel is replaced, and the fifth procedure is repeated.
The connecting method is suitable for connecting precast concrete panels under various working conditions; the plate blocks have good force transmission and integrity; the plate is easy to replace when damaged, and the prefabricated plate can be replaced after the clamping ring 6, the cushion block 5 and the bolt 4 are taken out. The member has simple construction and short construction period, does not need surface reprocessing, overcomes the biggest defect of long construction period in the conventional pavement rush-construction repair engineering, can complete the rush-construction repair engineering of airport pavement, highway pavement or container yard in a short period, and greatly reduces the economic loss caused by road damage and traffic paralysis.
The connecting structure is divided into a male notch connecting piece connecting form, the structure is simple and clear, the installation is rapid, the panel can be locally and rapidly replaced after being damaged, and the process is simple. The connection between the plates is tight, the force transmission effect is good, the flatness is high, and the requirements of the specification on an airport pavement, a highway pavement or a container yard are met.
The bolt 4 type precast concrete panel has the advantages of simple and clear connecting structure, low processing cost and high construction and installation speed.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. The utility model provides a precast concrete panel connection structure based on bolt connection which characterized in that: the connecting piece comprises a bolt and two adjacent precast concrete panels, wherein the opposite surface of a first precast concrete panel in the two adjacent precast concrete panels is provided with at least one first connecting piece mounting groove, the opposite surface of a second precast concrete panel in the two adjacent precast concrete panels is provided with at least one second connecting piece mounting groove, when the first precast concrete panel is spliced with the second precast concrete panel, the first connecting piece mounting groove on the opposite surface of the first precast concrete panel and the second connecting piece mounting groove on the opposite surface of the second precast concrete panel enclose at least one connecting piece mounting hole, at least one first connecting piece and at least one second connecting piece are arranged in the connecting piece mounting hole, a part of the first connecting piece is pre-buried and fixed in the first precast concrete panel, and a part of the second connecting piece is pre-buried and fixed in the second precast concrete panel, the first connecting piece and the second connecting piece are provided with bolt holes, and bolts are inserted into the bolt holes of the first connecting piece and the second connecting piece to connect the first precast concrete panel with the second precast concrete panel.
2. The precast concrete panel connection structure based on latch connection according to claim 1, wherein: the axial lead of a connecting piece mounting hole enclosed between two adjacent precast concrete panels is vertical to the upper end surface of the precast concrete panel; the upper ends of the connecting piece mounting holes penetrate through the upper end surfaces of the first precast concrete panel and the second precast concrete panel.
3. The precast concrete panel connection structure based on latch connection according to claim 2, wherein: defining a first connecting piece or a second connecting piece positioned at the uppermost end of a connecting piece mounting hole as an upper connecting piece, wherein a bolt hole of the upper connecting piece is a through hole, and a bolt limiting device is arranged in the bolt hole of the upper connecting piece and used for axially limiting the upper end of a bolt; the bolt limiting device comprises a cushion block and a clamping ring, the cushion block is positioned in a bolt hole of the upper connecting piece and is positioned at the upper end of the bolt, the cushion block is limited by the clamping ring clamped in a clamping ring reserved groove, and a clamping ring reserved groove is formed in the hole wall of the bolt hole of the upper connecting piece; and a cast-in-place concrete structure is arranged in the upper end space of the upper connecting piece in the connecting piece mounting hole and used for sealing the connecting piece mounting hole.
4. The precast concrete panel connection structure based on latch connection according to claim 2, wherein: defining a first connecting piece or a second connecting piece positioned at the lowest end of a connecting piece mounting hole as a lower connecting piece, sealing the lower end of a bolt hole of the lower connecting piece to form a blind hole for limiting the lower end of the bolt, wherein the bolt holes of other connecting pieces positioned in the connecting piece mounting hole are all through holes; the bolt is rod-shaped, and gaps are arranged between the outer wall of the bolt and the bolt holes of the first connecting piece and the second connecting piece.
5. The precast concrete panel connection structure based on latch connection according to claim 1, wherein: the tang cooperation concatenation between first precast concrete panel and the second precast concrete panel, a side of first precast concrete panel is equipped with concave tang, a side of second precast concrete panel is equipped with convex tang for with the concave tang cooperation of first precast concrete panel side.
6. The precast concrete panel connection structure based on latch connection according to claim 1, wherein: the first connecting piece comprises a pre-embedded part pre-embedded in the first precast concrete panel and a connecting part exposed out of the side surface of the first precast concrete panel and positioned in the first connecting piece mounting groove, and the second connecting piece comprises a pre-embedded part pre-embedded in the second precast concrete panel and a connecting part exposed out of the side surface of the second precast concrete panel and positioned in the second connecting piece mounting groove; the embedded part is rod-shaped; the cross section of the rod-shaped embedded part is square; the rod-shaped embedded part is provided with an external thread; the connecting portion is provided with a bolt hole used for being matched with a bolt.
7. The precast concrete panel connection structure based on latch connection according to claim 1, wherein: two first connecting pieces and two second connecting pieces are arranged in the connecting piece mounting holes, and the two second connecting pieces are located between the two first connecting pieces.
8. The precast concrete panel connection structure based on latch connection according to claim 1, wherein: the prefabricated concrete panel is a quadrilateral plate, a first side face and a third side face of the quadrilateral plate are parallel, a second side face and a fourth side face of the quadrilateral plate are parallel, when the quadrilateral plate is spliced in a direction parallel to the first side face and the third side face, the second side face of the quadrilateral plate is provided with at least one first connecting piece mounting groove, the fourth side face of the quadrilateral plate is provided with at least one second connecting piece mounting groove, when the quadrilateral plate is spliced in a direction parallel to the second side face and the fourth side face, the first side face of the quadrilateral plate is provided with at least one first connecting piece mounting groove, the third side face of the quadrilateral plate is provided with at least one second connecting piece mounting groove, at least one first connecting piece is fixed in the first connecting piece mounting groove, and at least one second connecting piece is fixed in the second connecting piece mounting groove;
when the quadrilateral plate is spliced along the direction parallel to the first side and the third side, one short side of the quadrilateral plate is provided with a concave spigot, the other short side of the quadrilateral plate is provided with a convex spigot, when the quadrilateral plate is spliced along the width direction, one long side of the quadrilateral plate is provided with a concave spigot, and the other long side of the quadrilateral plate is provided with a convex spigot.
9. A precast concrete panel connecting method based on bolt connection is characterized by comprising the following steps:
prefabricating precast concrete panels and plugs according to any one of claims 1 to 8;
laying the precast concrete panels on a base layer, wherein at least one connecting piece mounting hole is formed between two adjacent precast concrete panels in a surrounding manner, at least one first connecting piece and at least one second connecting piece are arranged in the connecting piece mounting hole, a part of the first connecting piece is fixedly embedded in one precast concrete panel of the two adjacent precast concrete panels, and a part of the second connecting piece is fixedly embedded in the other precast concrete panel of the two adjacent precast concrete panels;
inserting bolts into the bolt holes of the first connecting piece and the second connecting piece in the connecting piece mounting holes to connect two adjacent precast concrete panels;
and grouting, filling and sealing in the mounting holes of the connecting pieces.
10. The precast concrete panel connection method based on the latch connection according to claim 9, wherein: when the precast concrete panels are laid on the base layer, two adjacent precast concrete panels are connected through the concave-convex rabbets;
the first connecting piece or the second connecting piece which is positioned at the uppermost end of the connecting piece mounting hole is defined as an upper connecting piece, the bolt hole of the upper connecting piece is a through hole, a clamp ring preformed groove is formed in the hole wall of the bolt hole of the upper connecting piece, after the bolt is inserted into the bolt holes of the first connecting piece and the second connecting piece in each connecting piece mounting hole, the cushion block is placed at the top of the bolt, a clamp ring is clamped in the clamp ring preformed groove, and the axial displacement of the bolt is limited.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110491900.0A CN113174799A (en) | 2021-05-06 | 2021-05-06 | Precast concrete panel connecting structure and method based on bolt connection |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110491900.0A CN113174799A (en) | 2021-05-06 | 2021-05-06 | Precast concrete panel connecting structure and method based on bolt connection |
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| CN113174799A true CN113174799A (en) | 2021-07-27 |
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| CN202110491900.0A Pending CN113174799A (en) | 2021-05-06 | 2021-05-06 | Precast concrete panel connecting structure and method based on bolt connection |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115852771A (en) * | 2022-12-02 | 2023-03-28 | 天津市政工程设计研究总院有限公司 | Fabricated concrete module with plug-in function, pavement and construction method thereof |
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2021
- 2021-05-06 CN CN202110491900.0A patent/CN113174799A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115852771A (en) * | 2022-12-02 | 2023-03-28 | 天津市政工程设计研究总院有限公司 | Fabricated concrete module with plug-in function, pavement and construction method thereof |
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