CN217026674U - Anti-collision guardrail - Google Patents

Abstract

The utility model discloses an anti-collision guardrail and a construction method thereof, belonging to the technical field of bridge engineering, wherein the anti-collision guardrail comprises: guardrail, bridge deck and connection structure; the upper surface of the bridge deck is provided with a multi-stage stepped structure, the one-stage stepped structure positioned at the lowest part in the multi-stage stepped structure is a connecting stepped structure, a plurality of connecting structures are embedded on the stepped surface of the connecting stepped structure at intervals, and the lower end surface of the guardrail is matched with the multi-stage stepped structure of the bridge deck and is connected with the bridge deck through the connecting structures; in the device, the connecting surfaces of the guardrail and the bridge deck are mutually matched through the multistage steps and are connected through the connecting structure, so that the connecting strength of the guardrail and the bridge deck is ensured, and meanwhile, the durability of the structure is relatively improved; the multistage steps ensure that the guardrail is propped against the bridge deck through the steps when high-strength collision occurs, so that the guardrail is not easy to fall off; the shearing resistance is also effectively improved. The whole device has simple process, strong applicability, wide application and low cost.

Description

Anti-collision guardrail

Technical Field

The utility model relates to the technical field of bridge engineering, in particular to an anti-collision guardrail.

Background

At present, the rapid assembly type green bridge construction concept has long-term development, and the assembly type bridge structure is rapidly developed. The existing prefabricated concrete crash barrier connection mode has the following defects: firstly, the construction process of the connecting part of the partially prefabricated assembled concrete anti-collision guardrail still adopts a cast-in-place concrete connecting mode, the construction process is relatively complex, and the construction site still has great pollution; secondly, the connecting part of the partially prefabricated concrete crash barrier adopts a welding mode, the on-site welding workload is large, and the welding quality is difficult to control; thirdly, the prefabricated mounting precision of the connecting part of the partially prefabricated concrete crash barrier is high, and the adjustment and control are difficult; and finally, the durability of the connecting structure of the partially prefabricated concrete crash barrier is to be tested.

In conclusion, how to quickly realize green construction of a bridge, simplify the process and improve the durability of the bridge is a problem to be solved in the field of the existing quick assembly type bridge.

SUMMERY OF THE UTILITY MODEL

In order to achieve the purpose, the utility model provides the anti-collision guardrail and the construction method, and the anti-collision guardrail is simple in process, strong in applicability, wide in application and low in cost.

The technical scheme for solving the technical problems is as follows:

anticollision barrier includes:

guardrail, bridge deck and connection structure;

the decking upper surface is equipped with multistage stair structure, the one-level ladder that lies in the below among the multistage stair structure is for connecting the ladder, it has a plurality of connection structure to connect the interval to inlay on the ladder face of ladder, the guardrail under the terminal surface with the multistage stair structure of decking cooperatees, and passes through connection structure connects.

The utility model has the beneficial effects that: the connecting surfaces of the guardrail and the bridge deck are mutually matched through multi-stage steps and are connected through the connecting structure, so that the connecting strength of the guardrail and the bridge deck is ensured, and meanwhile, the durability of the structure is relatively improved; the multistage steps ensure that the guardrail is propped against the bridge deck through the steps when high-strength collision occurs, so that the guardrail is not easy to fall off; the shearing resistance is also effectively improved. The whole device has simple process, strong applicability, wide application and low cost.

On the basis of the technical scheme, the utility model can be further improved as follows:

further, the connecting structure comprises a screw rod, a sleeve and an eccentric nut, the sleeve is of a cylindrical structure with a closed bottom and an open top, the sleeve is vertically embedded in the step surface of the connecting step, and the open top of the sleeve is not higher than the step surface of the connecting step; the lower end of the screw rod penetrates through and is connected with the closed end at the bottom of the sleeve, and the upper end of the screw rod penetrates through the lower end face of the guardrail and is fixedly connected with the guardrail; and the screw rod is in threaded connection with an eccentric nut, the eccentric nut is positioned in the sleeve, and the eccentric distance of the eccentric nut is the same as the radius of the sleeve.

The beneficial effect of adopting the further scheme is that: the sleeve is vertically embedded in the bridge deck slab, and the screw penetrates through the sleeve, so that the sleeve reduces the requirement on the precision of the embedded part, improves the controllability of the installation precision and reduces the construction difficulty; the eccentric nut is used for finely adjusting the whole device before installation, and because the eccentric distance of the eccentric nut is the same as the radius of the sleeve, when the screw 31 is in a vertical state at the center of the sleeve and has no deviation, the eccentric nut can be just screwed into the sleeve, when the screw is not vertical, namely, the deviation exists, at the moment, the eccentric distance of the eccentric nut is larger than the radius of the sleeve when being screwed, and under the internal constraint of the sleeve, the eccentric nut is continuously rotated, so that the eccentric part is abutted against the inner wall of the sleeve, the eccentric distance is kept to be the same as the radius of the sleeve, and the vertical adjustment of the screw is realized; the guardrail and the bridge deck plate are effectively clamped in a precision range.

Furthermore, the screw rod is also in threaded connection with a first nut and a second nut, the first nut is positioned in the sleeve and abuts against the inner side face of the closed end at the bottom of the sleeve, and the second nut is positioned below the sleeve and abuts against the outer side face of the closed end at the bottom of the sleeve; still be equipped with first gasket on the screw rod, first gasket clamp is established the second nut with between the telescopic bottom blind end lateral surface.

The beneficial effect of adopting the further scheme is that: first nut and second nut revolve to twist each other and are close to, and then fixed first gasket and sleeve in the screw rod lower extreme, and then improved the steadiness of sleeve in pre-buried, make things convenient for concrete placement.

Furthermore, a sleeve is pre-embedded in the guardrail, the screw rod is sleeved in the sleeve, and the screw rod penetrates out of the guardrail and is fixedly connected with the upper end face of the guardrail through a third nut and a second gasket.

The beneficial effect of adopting the above further scheme is: the embedded sleeve is used for penetrating through a screw rod of the connecting structure, the lower end of the connecting structure is embedded in the bridge deck, and the upper end of the connecting structure is abutted to the second gasket through a third nut at the upper end of the rotating screw rod so as to fix the guardrail, so that the fixed connection between the guardrail and the bridge deck is realized.

Furthermore, spiral ribs are pre-embedded in the guardrail and sleeved on the outer side of the sleeve.

The beneficial effect of adopting the above further scheme is: the spiral muscle cover is established the sleeve pipe outside to together prefabricated in the guardrail, improved the local structural strength of guardrail through the spiral muscle, played the surplus cushioning effect to overall structure, play firm effect when prefabricated guardrail and installation guardrail.

Further, the guardrail lower extreme is equipped with connects along, it is equipped with a plurality of tunnels to connect along, the tunnel is used for the installation connection structure, the tunnel upper end is through notch and external UNICOM.

The beneficial effect of adopting the further scheme is that: the pore is used for installing the connecting structure, so that the guardrail and the bridge deck are clamped with each other, and the connection between the guardrail and the bridge deck is ensured to be stable. Wherein the notch is convenient to carry out cement seal after the two are connected, prevents that connection structure from rusting or influencing the performance.

Further, the guardrail still includes a plurality of hoist and mount hole, hoist and mount hole level link up the upper end of guardrail, it is a plurality of hoist and mount hole horizontal parallel arrangement each other.

The beneficial effect of adopting the further scheme is that: a plurality of hoist and mount holes make things convenient for the transportation and the installation of guardrail, and the level parallel is placed and is guaranteed that the atress is even at hoist and mount in-process.

Furthermore, the hoisting holes are two and are distributed on the upper end of the guardrail in a bilateral symmetry manner.

The beneficial effect of adopting the above further scheme is: the two hoisting holes are more convenient for hoisting the guardrail, the minimum number of holes is ensured, the structural strength of the guardrail is ensured, and the construction operation flow is also reduced.

Furthermore, the guardrails and the bridge deck slab are prefabricated by using templates made of steel templates through cement, and a steel reinforcement framework is arranged inside the templates; a grout layer is arranged between the guardrail and the bridge deck; and concrete is filled in the joints of the guardrails and the bridge deck slab for sealing.

The beneficial effect of adopting the further scheme is that: sit the adhesion degree that the thick liquid layer can improve guardrail and decking, make connection structure not expose in the air simultaneously, connection structure's life has been prolonged, guardrail and decking are prefabricated to be formed, the efficiency of manufacture has been improved, the manpower and materials of on-the-spot installation have been reduced, inside steel reinforcement framework who is equipped with is used for promoting the intensity and the rigidity of whole device, other junctions gap department prevents through concrete seal that inside exposed reinforcing bar or ironwork are rusted, the life of product is improved.

Furthermore, the upper surface of the bridge deck is provided with a two-stage step structure.

The beneficial effect of adopting the further scheme is that: the two-stage stepped structure is optimal, and the best shearing resistance can be realized.

Drawings

FIG. 1 is a general schematic of the present invention;

FIG. 2 is a side view of the present invention;

FIG. 3 is a side view of the barrier of the present invention;

FIG. 4 is a side view of a deck plate and a connection structure according to the present invention;

FIG. 5 is a schematic view of a connection structure according to the present invention;

FIG. 6 is a schematic view of a sleeve of the present invention;

FIG. 7 is a schematic view of an eccentric nut of the present invention;

FIG. 8 is a molded structure view of the bridge deck of the present invention;

FIG. 9 is a schematic view of the installation of stirrups and strip flanges on the decking of the present invention;

FIG. 10 is a lofting fixture installation view of the connection structure of the present invention;

FIG. 11 is a schematic view of the bridge deck and the connection structure after casting;

FIG. 12 is a schematic view of the bridge deck with the form removed after casting;

FIG. 13 is a schematic view of the installation of the decking and guard rail of the present invention;

FIG. 14 is a schematic view of the deck plate and guardrail of the present invention secured by spacer nuts;

FIG. 15 is a schematic view of the present invention filling a slot with concrete.

In the drawings, the reference numbers indicate the following list of parts:

1. a guardrail; 11. a duct; 12. a notch; 13. hoisting the holes; 2. a bridge deck; 3. a connecting structure; 31. a screw; 32. a sleeve; 33. an eccentric nut; 34. a first nut; 35. a second nut; 36. a first gasket; 37. a third nut; 38. a spiral rib; 39. a second gasket.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings, which are not intended to limit the scope of the present invention.

Example 1: as shown in fig. 1-2, an embodiment of a crash barrier disclosed herein comprises:

the bridge comprises a guardrail 1, a bridge deck 2 and a connecting structure 3;

2 upper surfaces of decking are equipped with multistage stair structure, and the one-level ladder that lies in the below among the multistage stair structure is for connecting the ladder, and the interval is inlayed on the ladder face of connecting the ladder has a plurality of connection structure 3, and guardrail 1 lower terminal surface cooperatees with the multistage stair structure of decking 2 to connect through connection structure 3.

It should be understood that the bridge deck 2 formed by the multistage ladders is matched with the lower end of the guardrail 1 to form a shear connection, so that the shear resistance is effectively improved; meanwhile, the guardrail is ensured to be propped against by the multistage steps when high-strength collision occurs, and further, the falling is not easy to occur; the connecting structure 3 is connected with the guardrail 1 and the bridge deck 2, so that high-strength connection between the guardrail and the bridge deck is ensured, and meanwhile, the durability of the structure is relatively improved; the whole device has simple process, strong applicability, wide application and low cost.

Preferably, the upper surface of the bridge deck 2 is of a two-stage stepped structure, the guardrail 1 is of a block structure, the lower end of the guardrail is large, and the upper end of the guardrail is small, so that the center of gravity of the guardrail 1 is reduced, and the stability of the whole device is ensured;

on the basis of example 1, example 2: as shown in fig. 5-7, the connecting structure 3 includes a screw 31, a sleeve 32 and an eccentric nut 33, the sleeve 32 is a cylindrical structure with a closed bottom and an open top, the sleeve 32 is vertically embedded in the step surface of the connecting step, and the open top end of the sleeve 32 is not higher than the step surface of the connecting step; the lower end of the screw rod 31 penetrates through and is connected with the closed end at the bottom of the sleeve 32, and the upper end of the screw rod 31 penetrates through the lower end face of the guardrail 1 and is fixedly connected with the guardrail 1; the screw 31 is connected with an eccentric nut 33 through threads, the eccentric nut 33 is positioned in the sleeve 32, and the eccentric distance of the eccentric nut 33 is the same as the radius of the sleeve 32.

Specifically, the sleeve 32 is a cylindrical structure with a closed bottom and an open top and is vertically embedded in the bridge deck 2, the lower end of the screw 31 penetrates through the bottom of the sleeve 32, the sleeve 32 is fixed to be prefabricated in the bridge deck 2, the prefabricated height of the bridge deck 2 is horizontal to the open top of the sleeve 32, concrete is not filled in the sleeve 32 in the prefabricating process, an eccentric nut 33 is installed at the open top of the sleeve 32, and the eccentric distance of the eccentric nut 33 is the same as the radius of the sleeve 32.

It should be understood that the vertical screw 31 passes through the vertical sleeve 32, so that the sleeve 32 reduces the requirement on the precision of the embedded part, improves the controllability of the installation precision, and reduces the construction difficulty; the eccentric nut 33 is used for fine adjustment of the whole device screw 31 before the guardrail 1 is installed, so that the installation is convenient; specifically, the eccentric distance of the eccentric nut 33 is the same as the radius of the sleeve 32, when the screw 31 is vertical at the center of the sleeve, the eccentric nut 33 can be just screwed into the sleeve 32, when the screw 31 is not vertical, namely, there is a deviation, at this time, the eccentric distance of the eccentric end of the eccentric nut 33 is larger than the radius of the sleeve 32 when screwing, as the sleeve 32 is fixed and poured in the bridge deck 2, when screwing the eccentric nut 33, the eccentric end will abut against the inner wall of the sleeve 32, and under the reaction of the inner wall, the eccentric nut 33 is screwed continuously, so that the eccentric part moves until the eccentric distance is kept the same as the radius of the sleeve 32, and thus the vertical adjustment of the screw 31 is realized; ensuring that the guardrail (1) and the bridge deck (2) are effectively clamped in a precision range.

Based on example 1, example 3: as shown in fig. 5, the screw 31 is further connected with a first nut 34 and a second nut 35 by threads, the first nut 34 is located in the sleeve 32 and abuts against the inner side surface of the bottom closed end of the sleeve 32, and the second nut 35 is located below the sleeve 32 and abuts against the outer side surface of the bottom closed end of the sleeve 32; the screw 31 is further sleeved with a first gasket 36, and the first gasket 36 is clamped between the second nut 35 and the outer side face of the bottom closed end of the sleeve 32.

It should be understood that, be located first nut 34 and second nut 35 on screw rod 31 and twist each other soon and be close to each other, and then fixed first gasket 36 and sleeve 32 in the lower extreme of screw rod 31, and then made things convenient for sleeve 32 pre-buried and improved sleeve 32 steadiness at pre-buried in-process, made things convenient for subsequent concrete placement, first gasket 36 is after pre-buried access deck board, has also improved and can provide bigger pulling force at connection guardrail 1 in-process, ensures the bulk strength of whole device.

Preferably, the first spacer 36 has an area that is greater than the area of the bottom of the sleeve 32.

Example 4 on the basis of example 1: as shown in fig. 4-5, a sleeve is embedded in the guardrail 1, the screw 31 is sleeved in the sleeve, and the screw 31 passes through the guardrail 1 and is fixedly connected with the upper end surface of the guardrail 1 through a third nut 37 and a second gasket 39.

Specifically, the sleeve pipe is used for forming the through-hole that screw rod 31 passed on guardrail 1, because the screw rod 31 lower extreme of connection structure 3 is pre-buried in decking 2, the sleeve pipe is passed to screw rod 31 upper end to through the up end of third nut 37 and second gasket 39 fixed connection guardrail 1, realize the fixed connection of guardrail and decking.

It will be appreciated that the third nut 37 and the second washer 39, together with the first nut 34 and the first washer 36, provide tension to the screw 31 within the fence 1 and the deck plate 2, thereby achieving a secure connection of the fence 1 and the deck plate 2 to each other.

Preferably, the second gasket 39 is installed outside the upper end of the sleeve, the covered area of the second gasket 39 is larger than that of the sleeve, and a communication channel is arranged between the through hole formed by the second gasket 39 and the sleeve and used for later filling concrete.

Example 5 on the basis of example 1: as shown in fig. 4, a spiral rib 38 is also embedded in the guardrail 1, and the spiral rib 38 is sleeved outside the sleeve.

Specifically, spiral muscle 38 cover is established in the sleeve pipe outside to together prefabricated in guardrail 1, improved guardrail 1's overall structure intensity through spiral muscle 38, played the surplus cushioning effect to overall structure, played firm effect when prefabricating guardrail 1 and installation guardrail 1.

Example 6 on the basis of example 1: as shown in fig. 3, the lower end of the guardrail 1 is provided with a connecting edge, the connecting edge is provided with a plurality of pore canals 11, the pore canals 11 are used for installing the connecting structure 3, and the upper ends of the pore canals 11 are communicated with the outside through the notches 12.

Specifically, the hole 11 is a through hole formed by prefabricating the sleeve, and the hole 11 is used for installing the connecting structure 3, so that the guardrail 1 and the bridge deck 2 are clamped with each other, and the connection between the guardrail and the bridge deck is ensured to be stable. The notch 12 is arranged at the upper end of the duct 11, the opening size of the notch 12 is larger than the horizontal section of the duct 11, the third nut 37 and the second gasket 39 are conveniently screwed in the notch 12, cement sealing is carried out after the third nut and the second gasket are connected, and the connecting structure 3 is prevented from rusting or affecting the performance.

Example 7 on the basis of example 1: as shown in fig. 3, the guardrail 1 further comprises a plurality of hoisting holes 13, the hoisting holes 13 horizontally penetrate the upper end of the guardrail 1, and the hoisting holes 13 are horizontally arranged in parallel.

Specifically, a plurality of horizontal parallel hoisting holes 13 are prefabricated at the upper end of the guardrail 1 and are used for hoisting during installation or transportation, the hoisting holes 13 horizontally penetrate through the upper end of the guardrail 1, and the hoisting holes 13 are symmetrically distributed at the upper end of the guardrail 1 in a left-right mode.

It should be understood that the plurality of hoisting holes 13 facilitate transportation and hoisting of the guardrail 1, and the horizontal parallel arrangement ensures even stress during hoisting.

Preferably, two hoisting holes 13 are arranged on the guardrail 1 in a bilateral symmetry manner.

Example 8 on the basis of example 1: as shown in fig. 1-3, the guardrail 1 and the bridge deck 2 are prefabricated by cement by using a template made of steel templates, and a steel reinforcement framework is arranged in the template; a grout layer is arranged between the guardrail 1 and the bridge deck 2; the joints of the guardrail 1 and the bridge deck 2 are filled with concrete for sealing.

Specifically, the guardrail 1 and the bridge deck 2 are composed of templates made of steel templates, and the steel templates realize the recycling of the templates and save resources; the template prefabricating method improves the manufacturing efficiency, saves a large amount of manpower and material resources compared with in-situ pouring, and improves the overall installation and splicing efficiency. The steel reinforcement framework arranged inside the template improves the overall structural strength and rigidity of the guardrail 1 and the bridge deck 2; the slurry layer can improve the adhesion degree of the guardrail 1 and the bridge deck 2, and simultaneously, the connecting structure 3 is not exposed in the air at the connecting part of the guardrail 1 and the bridge deck 2, so that the service life of the connecting structure 3 is prolonged; gaps at other joints are sealed through concrete to prevent exposed steel bars or ironwork inside from rusting, and the service life of the product is prolonged.

As shown in fig. 8-15, the above embodiment relates to a method of constructing a crash barrier, comprising the steps of:

respectively prefabricating a guardrail 1 and a bridge deck 2; when the bridge deck 2 is prefabricated, a steel formwork is adopted to support a formwork to form a bridge deck formwork, the lower end part of the connecting structure 3 is embedded, concrete is poured on the bridge deck 2 formwork, so that the upper surface of the bridge deck 2 forms a multistage step structure, and the lower end part of the connecting structure 3 is embedded in a step which is positioned at the lowest part in the multistage step structure; when the guardrail 1 is prefabricated, a steel template formwork is adopted to form a guardrail template, concrete is poured, and the lower end face of the guardrail 1 is made to form a structure matched with the multistage step structure on the upper surface of the bridge deck 2;

assembling a guardrail 1 and a bridge deck 2; the guard rail 1 is assembled on the multistage stepped structure of the upper surface of the bridge deck 2 such that the connection structure 3 passes through the guard rail 1 and is locked and fixed.

Specifically, a guardrail 1 and a bridge deck 2 are prefabricated, so that the upper surface of the bridge deck 2 forms a multi-stage stepped structure, and the lower end surface of the guardrail 1 forms a structure matched with the multi-stage stepped structure on the upper surface of the bridge deck 2; the guard rail 1 is assembled on the multistage stepped structure of the upper surface of the bridge deck 2 such that the connection structure 3 passes through the guard rail 1 and is locked and fixed.

It should be understood that the assembly process is time-saving and labor-saving, simple in process, strong in applicability, wide in application and low in manufacturing cost.

As shown in fig. 8 to 15, the pre-buried connection structure 3 specifically includes the following steps:

filling a steel bar structure strip in the bridge deck formwork, mounting stirrup supports on the bridge deck formwork, and then mounting strip-shaped flange plates on the stirrup supports;

a through hole for the screw 31 of the connecting structure 3 to penetrate out is formed in the strip-shaped flange plate and is fixed on the strip-shaped flange plate through a nut, a first gasket 36 and a sleeve 32 are fixedly sleeved at the lower end of the screw 31, the sleeve 32 is vertically welded and fixed on the steel bar structure strip, and an opening at the top of the sleeve 32 is sealed by a plug; and pouring concrete into the bridge deck formwork, removing the plug, the strip-shaped flange plate and the stirrup support after maintenance, sleeving the eccentric nut 33 on the screw 31 and screwing the eccentric nut into the sleeve 32 from the opening at the top of the sleeve 32.

Specifically, the detailed construction method of the whole anti-collision guardrail comprises the following steps:

1. prefabricating a guardrail 1: as shown in fig. 3:

firstly, a guardrail 1 is supported and a steel reinforcement framework is bound; wherein the length of a single guardrail 1 is 4m, and the safety level of the guardrail 1 is SS-grade reinforced wall type guardrail; the template is a steel template, so that the template can be conveniently reused for many times;

vertically embedding a sleeve and a spiral rib 38 in the guardrail 1; the sleeve is made of PVC material, the sleeve vertically penetrates through the guardrail 1 to form a hole channel 11, and the sleeve and the spiral rib 38 are fixed on the steel bar by using binding wires; the spiral rib 38 is sleeved on the outer side surface of the sleeve;

embedding two horizontally parallel and symmetrical hoisting holes 13 at the upper end of each guardrail 1;

and fourthly, pouring the precast guardrail concrete, curing for 7 days, standing for one month, and then installing.

2. Step 2, prefabricating the bridge deck 2,

firstly, a bridge deck 2 is provided with a formwork, a steel reinforcement framework is bound, and a steel formwork is used as the formwork, so that repeated use is facilitated; as shown in fig. 8;

installation of the connecting structure 3: as shown in fig. 8: a temporary stirrup is used for supporting and fixing a strip-shaped flange plate, a plurality of round holes are formed in the strip-shaped flange plate and correspond to the plurality of screw rods 31, the screw rods 31 are made of finish-rolled deformed steel bars, the diameter of the holes is slightly larger than the outer diameter of the screw rods 31 by 2-3 mm, and the flange plate is made of hollow stainless steel;

third, lofting of the connecting structure 3: as shown in fig. 9: the upper end of the screw rod 31 is placed in the strip-shaped flange plate, then the screw rod 31 is fixed by the nut 32 and is naturally vertical, the central coordinate of the screw rod 31 is checked, the central coordinate of the connecting structure 3 at the two ends of the strip-shaped flange plate is positioned by a total station, and the coordinate error needs to meet the corresponding standard requirement; the lower end of the screw 31 fixes a first gasket 36 and the sleeve 32 through a first nut 34 and a second nut 35;

and fourthly, fixing the connecting structure 3 as shown in figures 9 to 10. The steel reinforcement framework in the template comprises a horizontal steel bar, the height of the horizontal steel bar corresponds to that of the sleeves 32, the horizontal steel bar is provided with a plurality of clamping marks, the clamping marks correspond to the sleeves 32 and are clamped with the sleeves 32, and the sleeves 32 and the screw 31 are kept in a vertical state on the strip-shaped flange plate; welding and fixing the sleeve 32 on the clamping mark of the horizontal reinforcing steel bar; the sleeve 32 is temporarily sealed by using a wooden plug, so that concrete is prevented from entering the sleeve 32 when the bridge deck 2 is poured;

fifthly, pouring concrete on the bridge deck 5 and maintaining for one month;

sixthly, as shown in figure 11: the flange, stirrup member and wooden plug are removed.

3. Installing the guard rail 1, as shown in fig. 12-14:

firstly, before installing a guardrail 1, checking the central coordinates of a screw rod 31 of a connecting structure 3 at two ends of a flange plate by using a total station; if the deviation of the screw 31 is caused during pouring, the eccentric nut 33 is screwed on the screw 31 in the sleeve 32, and during screwing, an acting force is generated on the eccentric end of the eccentric nut 33 through the inner wall of the sleeve 32, so that the screw 31 is pushed to move in the opposite direction of the deviation, the deviation is eliminated, and the coordinate correction is completed.

Secondly, setting the pulp; before guardrail 1 installs, at first adopt to sit the thick liquid technology installation of making level, lay one deck mortar between decking 2 and 1 contact surface of guardrail promptly, the condition that guardrail edges and corners and 2 collisions of decking lead to the local destruction of concrete when preventing guardrail 1 from installing also fills up inside sleeve 32 with the mortar when sitting thick liquid in-process.

Mounting details; the outer side of the bottom of the guardrail 1 is provided with a secondary step which is recessed inwards and is matched with the step of the bridge deck 2; the hole 11 of the crash barrier 1 passes through the screw 31 pre-embedded on the bridge deck 2, and the third nut 37 and the second gasket 39 are screwed through the notch 12, so that the crash barrier 1 and the bridge deck 2 are fixedly connected.

Filling the reserved hole 11 and the notch 12, filling grouting material between the guardrail reserved hole 11 and the sleeve 32, and filling the reserved notch 12 to be level, as shown in fig. 13 to 14.

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 utility model, 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. A crash barrier, comprising:

the bridge comprises a guardrail (1), a bridge deck (2) and a connecting structure (3);

bridge panel (2) upper surface is equipped with multistage stair structure, the one-level ladder that lies in the below among the multistage stair structure is for connecting the ladder, it has a plurality of connection structure (3) to connect the interval to inlay on the ladder face of ladder, guardrail (1) down the terminal surface with the multistage stair structure of bridge panel (2) cooperatees, and passes through connection structure (3) are connected.

2. The crash barrier as recited in claim 1, wherein the connecting structure (3) comprises a screw (31), a sleeve (32) and an eccentric nut (33), the sleeve (32) is a cylindrical structure with a closed bottom and an open top, the sleeve (32) is vertically embedded in a step surface of the connecting step, and the open top of the sleeve (32) is not higher than the step surface of the connecting step; the lower end of the screw rod (31) penetrates through and is connected with the closed end at the bottom of the sleeve (32), and the upper end of the screw rod (31) penetrates through the lower end face of the guardrail (1) and is fixedly connected with the guardrail (1); the screw rod (31) is connected with an eccentric nut (33) in a threaded mode, the eccentric nut (33) is located in the sleeve (32), and the eccentric distance of the eccentric nut (33) is the same as the radius of the sleeve (32).

3. The crash barrier as recited in claim 2, wherein the screw (31) is further threadedly connected with a first nut (34) and a second nut (35), the first nut (34) is located in the sleeve (32) and abuts against the inner side surface of the bottom closed end of the sleeve (32), and the second nut (35) is located below the sleeve (32) and abuts against the outer side surface of the bottom closed end of the sleeve; the screw rod (31) is further sleeved with a first gasket (36), and the first gasket (36) is clamped between the second nut (35) and the outer side face of the closed end of the bottom of the sleeve (32).

4. An anti-collision guardrail according to claim 2 or 3, characterized in that a sleeve is embedded on the guardrail (1), the screw rod (31) is sleeved in the sleeve, and the screw rod (31) penetrates out of the guardrail (1) and is fixedly connected with the upper end face of the guardrail (1) through a third nut (37) and a second gasket (39).

5. The anti-collision guardrail according to claim 4, characterized in that a spiral rib (38) is embedded in the guardrail, and the spiral rib (38) is sleeved outside the sleeve.

6. An anti-collision guardrail according to any one of claims 1 to 3, characterized in that the guardrail (1) is provided at its lower end with a connecting edge, the connecting edge is provided with a plurality of holes (11), the holes (11) are used for mounting the connecting structure (3), and the upper ends of the holes (11) are communicated with the outside through notches (12).

7. Crash barrier according to any one of claims 1 to 3, characterized in that the barrier (1) further comprises a plurality of hoisting holes (13), the hoisting holes (13) extending horizontally through the upper end of the barrier (1), the plurality of hoisting holes (13) being arranged horizontally parallel to each other.

8. An impact protection fence according to claim 7, characterized in that the hoisting holes (13) are two and are distributed in bilateral symmetry at the upper end of the fence (1).

9. The crash barrier as recited in any one of claims 1 to 3, wherein the guardrail (1) and the bridge deck (2) are prefabricated by cement from a formwork made of steel formwork, and a steel reinforcement framework is further arranged inside the formwork; a grout layer is arranged between the guardrail (1) and the bridge deck (2); and concrete is filled in the joints of the guardrail (1) and the bridge deck (2) for sealing.

10. A crash barrier according to any one of claims 1-3, characterised in that the upper surface of the deck plate (2) is provided with a two-step structure.

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