SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a solve the construction method of cast in situ concrete guardrail of above defect.
In order to realize the purpose of any one of the above utility model, the utility model provides a cast-in-place concrete guardrail, which is arranged on a bridge deck, and comprises a bridge deck guardrail arranged on the bridge deck and an external platform arranged at the side of the bridge deck guardrail, wherein a cushion block and a reinforcement cage hung in the cushion block are arranged in the bridge deck guardrail; wherein the bridge deck guardrail is cast by a cast-in-place concrete guardrail template arranged on the bridge deck; the external platform is formed by pouring concrete guardrail external platform manufacturing equipment; the cast-in-place concrete guardrail template comprises an outer die with inclined ribs, an inner die with ribs at outer bottom corners and angle steel with ribs; wherein the external mold with the inclined ribs and the angle steel with the ribs are arranged on the side of the bridge surface and fixed on the side surface of the bridge, and the external mold with the inclined ribs is arranged on the angle steel with the ribs; the inner die with the ribs at the outer bottom corners is arranged on the bridge surface, and the inner die with the ribs at the outer bottom corners and the outer die with the inclined ribs are connected through hollow screws.
In some embodiments, the ribbed angle steel is placed on one side of the side face of the bridge, and the side of the ribbed angle steel and the bottom of the external mold with the inclined ribs are fixed on the side face of the bridge through nuts and expansion bolts reserved on the side face of the bridge.
In some embodiments, the outer mold with the inclined ribs is provided with the through inclined ribs, wherein the through inclined ribs are arranged at intervals from top to bottom.
In some embodiments, the outer bottom corner part of the inner mold with the outer bottom corner ribs is provided with a bottom corner bottom plate, the bottom corner bottom plate is provided with bottom corner inclined ribs and bolt holes, the bottom corner bottom plate and the bottom corner inclined ribs are obliquely arranged, and the inner mold with the outer bottom corner ribs forms a triangular structure.
In some embodiments, the bolt holes on the bottom corner bottom plate of the inner die with the bottom corner ribs penetrate through the expansion bolts reserved on the bridge face to fix the inner die with the outer bottom corner ribs on the upper side of the bridge face.
In some embodiments, the corresponding positions of the middle upper parts of the inner die with the ribs at the outer bottom corners and the outer die with the inclined ribs are provided with reserved holes, the screw rod penetrates through the reserved holes on the inner die with the ribs at the outer bottom corners and the reserved holes on the outer die with the inclined ribs, and the connecting positions of the two sides are fixed by nuts.
In some embodiments, the ribbed steel angle is formed by arranging triangular ribs on the steel angle at certain intervals.
In some embodiments, the platform template and the ribbed steel angle are provided with fixing rings on opposite surfaces thereof, and steel wires are arranged between the fixing rings respectively arranged on both sides, and the fixing rings and the steel wires connect the platform template and the ribbed steel angle.
In some embodiments, the side surface of the platform template is provided with an orifice, a hollow screw is reserved at a corresponding position on the bridge deck guardrail, and at least one protective cylinder penetrates through the orifice and the hollow screw.
In some embodiments, the slurry injection pipe and the slurry outlet pipe are arranged on the casing in advance, and the prestressed tendons are arranged in the casing in a penetrating mode.
Compared with the prior art, the utility model discloses following beneficial effect has:
(1) the utility model discloses utilize expansion bolts to fix guardrail template's base angle bottom plate fast and take the external mold of oblique rib and ribbed angle steel, ribbed angle steel is as the support of the external mold of taking oblique rib, solves the fixed problem of guardrail external template.
(2) The utility model discloses set up the preformed hole on taking the external mold of oblique rib and the interior mould of outer base angle area rib, the screw rod passes the preformed hole to carry out quick fixation with the nut.
(3) The utility model discloses pre-buried cavity screw rod in the guardrail, then will protect a section of thick bamboo and insert the cavity screw rod, insert a section of thick bamboo with prestressing tendons, carry out the concrete at last and pour into, make the external platform load that receives transmit the guardrail on, ensure the steadiness of external platform.
(4) The utility model discloses a set up solid fixed ring on platform template and the ribbed angle steel, utilize the steel wire to link together both, can increase the fastness of template, prevent the platform template camber.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art all belong to the protection scope of the present invention.
It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in a generic and descriptive sense only and not for purposes of limitation, as the terms are used in the description to indicate that the referenced device or element must have the specified orientation, be constructed and operated in the specified orientation, and not for the purposes of limitation.
It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.
According to cast in situ concrete guardrail's structure show, on cast in situ concrete guardrail arranged bridge face (1), include:
the bridge deck guardrail structure comprises a bridge deck guardrail (16) arranged on a bridge deck (1) and an external platform arranged on the side of the bridge deck guardrail (16), wherein a cushion block (9) and a steel reinforcement cage hung in the cushion block (9) are arranged in the bridge deck guardrail (16);
wherein the bridge deck guardrail (16) is cast by a cast-in-place concrete guardrail template arranged on the bridge deck (1); the external platform is formed by pouring concrete guardrail external platform manufacturing equipment;
the cast-in-place concrete guardrail template comprises an outer die (6) with inclined ribs, an inner die (11) with outer bottom corners and ribs and angle steel (4) with ribs; wherein the external mold (6) with the inclined ribs and the angle steel (4) with the ribs are arranged on the side of the bridge face (1) and fixed on the side face (2) of the bridge, and the external mold (6) with the inclined ribs is arranged on the angle steel (4) with the ribs; the inner die (11) with the ribs at the outer bottom angles is arranged on the bridge surface (1), and the inner die (11) with the ribs at the outer bottom angles is connected with the outer die (6) with the inclined ribs through a hollow screw (14);
the concrete guardrail external platform manufacturing equipment comprises a platform template (20) and a support frame (18); the support frame (18) is arranged above the ribbed angle steel (4), the platform template (20) is arranged on the support frame (18), the platform template (20) is positioned on the side edge of the bridge floor guardrail (16), and the platform template (20) is connected to the ribbed angle steel (4).
The ribbed angle steel (4) is arranged on one side of the bridge side face (2), the expansion bolt (3) reserved on the bridge side face (2) penetrates through the ribbed angle steel (4), the nut (5) is connected to the expansion bolt (3) to play a role in fixing the ribbed angle steel (4) and the bridge face (1), and the expansion bolt (3) reserved on the bridge side face (2) and the nut (5) are arranged on the side of the ribbed angle steel (4) and fixed on the bridge side face (2).
The bottom side of the outer die (6) with the inclined ribs is fixed on the side face (2) of the bridge through expansion bolts (3) which are reserved in advance on the nut (5) and the side face (2) of the bridge.
Specifically, the bottom of an outer die (6) with inclined ribs is tightly attached to the upper portion of a steel angle (4) with ribs, the outer die (6) with the inclined ribs is provided with through-long inclined ribs (7), a reserved hole (8) is formed in the middle upper portion of the outer die, and the through-long inclined ribs (7) are arranged from top to bottom at a certain interval.
The outer bottom corner of the inner die (11) with the outer bottom corner ribs is provided with a bottom corner bottom plate (13), the bottom corner bottom plate (13) is provided with bottom corner inclined ribs (12) and bolt holes, the bottom corner bottom plate (13) and the bottom corner inclined ribs (12) are obliquely arranged, and the inner die (11) with the outer bottom corner ribs forms a triangular stable structure.
Bolt holes in a bottom corner bottom plate (13) of the inner die (11) with the ribs at the outer bottom corner penetrate through the bridge face (1) and reserved expansion bolts (3) in advance, so that the inner die (11) with the ribs at the outer bottom corner is fixed on the upper side of the bridge face (1).
In addition, a preformed hole (8) is arranged at the corresponding position of the upper part in the inner die (11) with the ribs at the outer bottom corners, and the preformed hole (8) on the inner die (11) with the ribs at the outer bottom corners and the preformed hole (8) on the outer die (6) with the inclined ribs are arranged at the corresponding positions.
After the screw rod (14) passes through the preformed hole (8) on the inner die (11) with the ribs at the outer bottom angle and the preformed hole (8) on the outer die (6) with the inclined ribs, the connecting positions at the two sides are fixed by nuts (5), and the inner die (11) with the ribs at the outer bottom angle is fixed on the outer die (6) with the inclined ribs.
The angle steel (4) with the ribs is formed by arranging triangular rib plates on the angle steel at certain intervals.
Wherein, place platform template (20) in support frame (18), and platform template (20) are connected in ribbed angle steel (4). Specifically, the opposite surfaces of the platform template (20) and the ribbed angle steel (4) are provided with fixing rings (17), steel wires (19) are arranged between the fixing rings (17) on the two sides respectively, the platform template (20) and the ribbed angle steel (4) are connected, and the firmness of the platform template (20) is guaranteed.
The platform template (20) is of a three-folding structure, a fixing ring (17) is arranged at the lower part of the platform template (20), an orifice (21) is arranged on the side surface of the platform template, correspondingly, a hollow screw (14) is reserved at a corresponding position on the bridge deck guardrail (16), and at least one protecting cylinder (22) penetrates through the orifice (21) and the hollow screw (14).
The slurry protection tube (22) is provided with a slurry injection tube (23) and a slurry outlet tube (24) in advance, wherein the slurry injection tube (23) and the slurry outlet tube (24) are arranged at intervals, and the slurry injection tube (23) and the slurry outlet tube (24) are arranged perpendicular to the slurry protection tube (22).
The prestressed reinforcement (25) are well penetrated in the pile casing (22), concrete (15) is poured, after the concrete (15) is solidified to a certain degree, the platform template (20) and the formwork supporting system are sequentially detached, an anchorage device (26) is arranged on one side of the bridge floor guardrail (16) far away from the platform template (20), prestress is applied to the prestressed reinforcement (25), redundant reinforcement materials and pipelines are cut off after the prestress is applied to the prestressed reinforcement (25), and the concrete guardrail external platform is formed.
The corresponding construction method of the cast-in-place concrete guardrail comprises the following steps:
1) installation of ribbed angle steel (4):
drilling at least one expansion bolt (3) on the side face (2) of the bridge according to the position of a bolt hole (29) in the ribbed angle steel (4), inserting the ribbed angle steel (4) into the drilled expansion bolt (3), and fixing the ribbed angle steel (4) on the expansion bolt (3) by using a nut (5);
in the embodiment of the utility model, 2 expansion bolts (3) are arranged on the side face (2) of the bridge, wherein the vertical distance between the expansion bolt (3) and the bridge face (1) is 0.1m and 0.2m respectively.
2) Installing an outer die (6) with inclined ribs:
at least one expansion bolt (3) is arranged on the side face (2) of the bridge according to the position of a bolt hole (29) on the outer die (6) with the inclined rib, the outer die (6) with the inclined rib is fixed on the side face (2) of the bridge by the expansion bolt (3), and the bottom of the outer die (6) with the inclined rib is placed on the angle steel (4) with the rib.
3) End mold (28) installation:
and end molds (28) are erected at two ends of the external mold (6) with the inclined ribs, and constructors are arranged on two side surfaces of each end mold (28) respectively to stabilize the end molds (28).
4) The inner die (11) with ribs at the outer bottom corner is installed:
at least one expansion bolt (3) is arranged on the bridge face (1) according to the position of a bolt hole (29) on a base angle bottom plate (13) on the inner die (11) with the rib at the outer base angle, and the base angle bottom plate (13) is fixed on the bridge face (1) by utilizing the expansion bolt (3).
In the process, the end mould (28) needs to be righted and tightly attached to the inner mould (11) with ribs at the outer bottom corner.
5) Fixing the template:
and inserting a hollow screw (14) on an end die (28) into a preformed hole (8) on an inner die (11) with ribs at the outer bottom angle and an outer die (6) with inclined ribs, and fixing by using a nut (5) to fix the outer die (6) with the inclined ribs, the end die (28) and the inner die (11) with ribs at the outer bottom angle together to form the guardrail template.
6) Hoisting a steel reinforcement cage:
and (3) placing a cushion block (9) in the guardrail template, and then hoisting the reinforcement cage into the cushion block (9).
The technical scheme of the utility model in, place four cushion (9) in four corners of guardrail template.
7) Pouring concrete:
and pouring concrete into the template.
8) Removing the template:
and after the concrete pouring is finished, the outer die (6) with the inclined ribs and the inner die (11) with the ribs at the outer bottom corners are detached.
9) The support frame (18) is provided with:
the supporting frame (18) is arranged on the ribbed angle steel (4).
10) Installing a platform template (20):
the platform template (20) is placed on the support frame (18), and the steel wire (19) is used for connecting the platform template (20) and the fixing ring (17) on the ribbed angle steel (4), so that the firmness of the platform template (20) is improved. When concrete is poured, the platform formwork (20) is prevented from falling outwards.
11) Arranging a casing (22):
the hollow screw (14) reserved in the corresponding position on the guardrail and an orifice (21) on the side surface of the platform template (20) penetrate through the casing (22), wherein a pipe orifice of a grouting pipe (23) and a pipe orifice of a grout outlet pipe (24) are reserved in the casing (22), after the construction of the casing (22) is completed, the grouting pipe (23) and the grout outlet pipe (24) are inserted into the corresponding pipe orifice, then the prestressed tendons (25) are inserted into the casing (22), and the prestressed tendons (25) are anchored on the two sides of the bridge deck guardrail (16) and the platform template (20) by using an anchorage device (26).
Wherein the grouting pipe (11) and the grout outlet pipe (12) are arranged at intervals, and the grouting pipe (11) and the grout outlet pipe (12) are vertical to the casing (10).
12) Pouring concrete:
firstly, pouring concrete of an external platform, wherein the concrete is injected into a platform template (20), and the height of the concrete is higher than that of a pile casing (22), so that the pile casing (22) is embedded into the platform; then, concrete (15) is poured into the grouting pipe (23) on the pile casing (22) to fill the concrete into the pile casing (22), and the prestressed tendon (25) is fixed on the pile casing (22).
13) Removing the template and cutting off redundant rib materials:
and after the concrete (15) is solidified, removing the external platform template (20) and cutting off the reinforcement exposed outside the bridge deck guardrail (16).
The hollow screw (14) passes through a preformed hole (8) on the outer die (6) with the inclined ribs and the inner die (11) with the ribs at the outer bottom angle and is fixed by a screw cap (5).
The angle steel (4) with the ribs is provided with a through long inclined rib (7), and the outer die (6) with the inclined rib is provided with a triangular rib plate.
The present invention is not limited to the above-mentioned preferred embodiments, and any other products in various forms can be obtained by the teaching of the present invention, but any changes in the shape or structure thereof, which have the same or similar technical solutions as the present invention, fall within the protection scope of the present invention.