CN111335190B - Channel bridge abutment body reinforcing construction method - Google Patents
Channel bridge abutment body reinforcing construction method Download PDFInfo
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- CN111335190B CN111335190B CN202010177382.0A CN202010177382A CN111335190B CN 111335190 B CN111335190 B CN 111335190B CN 202010177382 A CN202010177382 A CN 202010177382A CN 111335190 B CN111335190 B CN 111335190B
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
Abstract
The invention relates to a channel bridge abutment body reinforcing construction method, which comprises the following steps: step one, planning and ranging, step two, constructing a new bridge abutment, step three, constructing a foundation wall of a new bridge abutment and an old bridge abutment, step four, planting ribs on an original bridge abutment, step five, building an inner reinforcement cage, step six, building an inner support, step seven, manufacturing a template, step eight, installing the template, step nine, building an outer support, step ten, pouring concrete, step eleven, and removing the poured template. The invention has the effects of realizing the fixation of the template during the concrete pouring and improving the appearance quality of the concrete wall after the pouring.
Description
Technical Field
The invention relates to the technical field of channel abutment, in particular to a channel abutment body reinforcing construction method.
Background
And the bridge abutments are positioned at two ends of the bridge and used for supporting the superstructure of the bridge and connecting with the embankment. The function of the device is to transmit the load of the upper structure of the bridge to the foundation, and also has the functions of resisting the filling pressure behind the abutment, stabilizing the bridge head roadbed and connecting the bridge head circuit and the bridge upper circuit reliably and stably. The abutment is generally of a stone or plain concrete structure, while the light abutment is of a reinforced concrete structure. And the support structure is arranged at the connection part of the bridge and the embankment at the end of the shore or the bridge hole. It serves to support the superstructure and to connect two-shore roads while also retaining the filling behind the abutment. The abutment has various forms, and is mainly divided into a gravity abutment, a light abutment, a frame abutment, a combined abutment, a tension abutment and the like. At present, when the highway is widened, for example, four lanes are changed into eight lanes, the channel bridge section passed by the highway is widened along with the widening of the highway, and at the moment, the channel bridge abutment at the lower side of the channel bridge section is required to be widened and reinforced to support the widened bridge section.
The existing referenceable authorization publication numbers are: CN105464002A, the present invention discloses a reinforced concrete thin-walled abutment reinforcing construction method, which adopts the methods of crack sealing and grouting, applying pre-abutment transverse prestress, pouring reinforced concrete, thickening the abutment body section, etc. to jointly reinforce the reinforced concrete thin-walled abutment, so as to improve the integrity and the bearing capacity of the abutment, and firstly, the crack sealing and grouting are performed on the abutment body, so as to enhance the integrity of the abutment. And then the section of the original abutment body is further thickened by drilling embedded steel bars, laying a transverse prestressed steel bar pipeline in front of the abutment, additionally laying a steel bar net and pouring polypropylene concrete so as to enhance the bearing capacity of the reinforced concrete thin-wall abutment and improve the stress condition of the reinforced concrete thin-wall abutment. And finally, the prestressed tendons are transversely arranged in front of the tensioning anchoring platform and are pressed into slurry, so that the expansion and the generation of cracks are prevented and avoided, and the crack resistance and the durability of the reinforced concrete thin-wall bridge abutment are further enhanced. The construction method has the advantages of remarkable processing effect, resource saving, low cost, small influence of construction on road traffic and remarkable economic and social benefits.
At present, when the abutment is reinforced, the method is generally adopted, the original abutment is planted with the steel bars, a steel reinforcement cage is built on the outer side of the embedded steel bar, then a template is installed on the outer side of the steel reinforcement cage, but because the self-compacting concrete used for reinforcing the channel bridge body has large fluidity, the concrete fall is large in the pouring process under the influence of the geometric dimension, the template reinforcement cannot adopt the traditional opposite-pulling mode, therefore, when the template is fixed, one end of the embedded bar extends out of the template, then the template and the embedded bar are fixed, then concrete is poured in the template, after the concrete pouring success, directly dismantle the template, however, adopt foretell this kind of template fixed mode, utilize the bar planting pull rod to consolidate the template, demolish the template and still need cut the bar planting, the vestige that the pull rod left can't be eliminated, the appearance quality of concrete wall is arranged in order relatively poorly.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a channel abutment body reinforcing construction method which can realize template fixing during concrete pouring and can avoid the problem of poor appearance quality after the concrete wall is poured.
The above object of the present invention is achieved by the following technical solutions:
a channel abutment body reinforcing construction method is characterized by comprising the following steps:
planning distance measurement, determining distances to be lengthened at two ends of an original abutment on the lower side of a channel bridge according to the width of the channel bridge to be widened, respectively marking ends to be lengthened along two ends of the original abutment, respectively measuring the width of the original abutment to be reinforced towards the other original abutment, and making a mark II;
step two, constructing a new abutment, namely constructing the new abutment in a direction which is close to the original abutment by taking the two marks I measured in the step one as starting points, wherein the width of the new abutment is the width of the reinforced original abutment, and reserving a horizontal steel bar I which protrudes out of one side of the new abutment close to the original abutment on one side of the new abutment;
step three, constructing a foundation wall of the new and old abutment, namely pouring a foundation wall between the two new abutments and the original abutment, wherein the foundation wall is positioned on one side of the original abutment far away from reinforcement, the new and old abutments are connected through the foundation wall, and a second horizontal reinforcing steel bar protruding out of the foundation wall is reserved on one side of the foundation wall close to the original abutment;
step four, planting ribs on the original bridge abutment, namely horizontally planting ribs I on the side, to be reinforced, of the original bridge abutment, and then horizontally planting ribs II on two ends, close to the new bridge abutment, of the original bridge abutment;
step five, building an inner reinforcement cage, building a first reinforcement cage according to a first horizontal embedded reinforcement on the reinforcing side of the original bridge abutment, building a second reinforcement cage according to a second horizontal embedded reinforcement at two ends of the original bridge abutment, a first horizontal reinforcement reserved on the new bridge abutment and a second horizontal reinforcement reserved on the foundation wall, wherein the outer sides of the first reinforcement cage and the second reinforcement cage do not exceed a second mark;
step six, constructing an inner support, and respectively sleeving the outer end of the horizontal embedded bar I and the outer end of the horizontal reinforcing bar II with a plastic bullet head sleeve to enable the outer end of the plastic bullet head sleeve to be flush with a vertical surface where the mark II is located, namely flush with the outer sides of two new bridge platforms on the same side;
seventhly, template manufacturing, namely splicing and fixing a plurality of steel templates to form a pouring template;
step eight, installing the template, enabling two ends of the pouring template to exceed the new bridge abutment at the same side and to be close to one side, enabling the pouring template to abut against the outer side of the new bridge abutment at the same side, enabling the middle part of one side, where the template cloth is laid, of the pouring template to abut against the plastic bullet heads at the corresponding side, and completing the support of the cloth side of the pouring template laying template;
building an outer support, namely building an outer support frame between the two casting plates on the two sides along the length direction of the casting plates, and enabling the two sides of the outer support frame to be respectively abutted against one side of the two casting templates on which template cloth is not laid, so that one side of the casting templates on which the template cloth is not laid is supported;
step ten, pouring concrete, namely pouring a concrete reinforcing wall on one side of the pouring template where the template cloth is laid, so that the concrete uniformly fills the reinforcement cage I and the reinforcement II, wherein a vibrating rod is adopted for assisting vibration during pouring, and the vibration is paid attention to light vibration as much as possible during vibration;
and step eleven, removing the pouring template and the outer support after the concrete reinforced wall is formed, and periodically maintaining the concrete reinforced wall.
Through adopting above-mentioned technical scheme, establish one side of plastics bullet headgear butt pouring template through the outer end of level planting muscle one and with the outer end of horizontal reinforcing bar two cover respectively, the opposite side of rethread outrigger butt pouring template, the location of pouring template has been guaranteed on the one hand, on the other hand, accomplish the back at the pouring, take off the template, and the tip and the pouring template point contact of plastics bullet headgear, plastics bullet headgear will also follow the pouring to the wall in, reinforced wall does not have the reinforcing bar in the wall after the pouring, wall quality appearance quality is high.
The present invention in a preferred example may be further configured to: after splicing a plurality of steel templates into a pouring template, uniformly laying template cloth on the side, to be contacted, of the pouring template and the concrete, fixing the template cloth and the steel plates, and enabling one side, where the template cloth is laid, of the pouring template to face the original abutment on two sides respectively when the template is installed.
By adopting the technical scheme, the template cloth is adhered to the steel template, so that the air permeability and the water absorption of the template cloth can be fully utilized, the water marks and the air bubbles on the surface of the self-compacting concrete are discharged, and the appearance quality of the concrete wall surface is improved.
The present invention in a preferred example may be further configured to: the steel form keeps away from the length direction rigid coupling that the length direction rigid coupling of steel form was all followed at the upper and lower both ends of template cloth one side has the filler strip the same with steel form length direction, and the equal rigid coupling in one side of keeping away from the steel form that the steel form corresponds the filler strip has the support frame, slides on the support frame and is connected with many clamp plates that can tend to the filler strip direction motion, it has a plurality of tip to rotate the puller bolt who connects in the clamp plate to go back equal threaded connection on the support frame.
Through adopting above-mentioned technical scheme, during the use, can keep away from the surface of filler strip with the cover of template cloth on the steel form, then, the upper and lower both ends of bypassing the upper and lower both ends of steel form respectively and extending to the position of filler strip, then, taut template cloth to screw up the puller bolt, take the template step of pressing on the filler strip of pressure plate, can accomplish the firm fixed of steel sheet and template cloth.
The present invention in a preferred example may be further configured to: the outer strut includes that multi-disc steel pipe net and level are worn to establish multi-disc steel pipe net and all include the horizontal steel pipe that many levels set up and the vertical steel pipe of many vertical settings with each steel pipe net of being connected steel pipe of each steel pipe net rigid coupling, horizontal steel pipe and the mutual rigid coupling of vertical steel pipe, the upside both ends of steel pipe net still all incline to be provided with the reinforcement steel pipe, each reinforcement steel pipe incline by the both ends slope of steel pipe net and tend to the middle part of steel pipe net downwards and extend.
By adopting the technical scheme, the connecting steel pipes are fixedly connected and matched with the plurality of steel pipe networks, and the strength of the outer support can be ensured by matching the inclined reinforcing steel pipes with the steel pipe networks, so that the outer support is ensured to support the two side pouring templates.
The present invention in a preferred example may be further configured to: the both ends of horizontal steel pipe still all rotate and be connected with the threaded sleeve pipe that sets up with horizontal steel pipe coaxial line, all slide along the axis direction of horizontal steel pipe in the both ends of horizontal steel pipe and be connected with the roll adjustment pole, the roll adjustment pole is the threaded rod, the equal threaded connection in threaded sleeve pipe of roll adjustment pole one end.
Through adopting above-mentioned technical scheme, during the use, rotate the screw thread sleeve pipe to can drive the roll adjustment pole and slide along the axis direction of horizontal steel pipe, thereby adjust the length that the roll adjustment pole extends horizontal steel pipe, and then guarantee the support of outer support to the pouring template.
The invention in a preferred example may be further arranged to: the horizontal steel pipe and the vertical steel pipe are connected through bolts of a plurality of sections of steel pipes.
Through adopting above-mentioned technical scheme, during the use, can splice many steel pipes according to the demand of using, make many steel pipes constitute the horizontal steel pipe or the vertical steel pipe of different length to can be convenient for different user demands.
The invention in a preferred example may be further arranged to: the steel form is far away from one side of template cloth and still the level is provided with many backup pads, and the rectangular channel has all been seted up along the length direction of backup pad to the surface that the steel form was kept away from to many backup pads, the backup pad corresponds the upper and lower both sides of rectangular channel still equal vertical sliding connection has the limiting plate, it can promote two limiting plates to tend to be close to the direction each other and remove to outstanding spring that pushes away in two bottom surfaces about the rectangular channel to go back the rigid coupling in the backup pad, the length direction of limiting plate all is the same with the length direction of backup pad, the one end homoenergetic of roll adjustment pole extends to the rectangular channel in, and the upper and lower both sides of roll adjustment pole all set up the spacing groove that can.
Through adopting above-mentioned technical scheme, during the use, stir two limiting plates and open the rectangular channel, then, adjust the roll adjustment pole, make the one end of roll adjustment pole extend to the rectangular channel of pouring template backup pad, loosen the limiting plate, the limiting plate can make two limiting plates insert respectively and locate the limiting groove of both sides about the roll adjustment pole through pushing away the spring effect to accomplish the fixed of template and backup pad.
The invention is further provided with: the one end level of each steel form is provided with the locating lever that can tend to the steel form direction motion, the one end of locating lever is extended steel form one end and tends to be away from one side bending type of steel form and is colluded the body, still the rigid coupling can promote the locating lever under the normality and tend to keep away from the spring of steel form direction motion on the steel form, the hook groove that can be convenient for collude the body and insert and catch is all seted up to the position that the other end of steel form corresponds colludes the body.
Through adopting above-mentioned technical scheme, when splicing adjacent steel form, can press the locating lever, make the locating lever tend towards the direction motion of steel form to can make and collude the body and insert the inslot that colludes of another steel form, then, loosen the locating lever, the spring can promote the locating lever and tend to the direction motion of keeping away from the steel form, thereby can make and collude the body and collude the groove, realize facing the connection of steel form mutually.
The present invention in a preferred example may be further configured to: the backup pad is vertical to be slided and is connected in the steel form, the tip of backup pad is equal threaded connection still can the butt in the tight bolt that supports of steel form.
Through adopting above-mentioned technical scheme, during the use, can slide the position of each backup pad on the steel form according to the vertical direction position of each regulation pole of outer support, then, screw up and support the bolt tightly, accomplish the rigidity of bracing piece to can conveniently adjust the fixed connection of pole and steel form.
The present invention in a preferred example may be further configured to: the upper end of the reinforced steel pipe is also fixedly connected with a supporting pad.
Through adopting above-mentioned technical scheme, during the use, can support the steel form upside through the supporting pad.
In summary, the invention includes at least one of the following beneficial technical effects:
1. the outer end through horizontal bar planting one and establish one side of plastics bullet headgear butt pouring template with the outer end of horizontal reinforcing bar two cover respectively, the opposite side of rethread outer strut butt pouring template, the location of pouring template has been guaranteed on the one hand, on the other hand, after the pouring is accomplished, the template is taken off, and the tip and the pouring template point contact of plastics bullet headgear, plastics bullet headgear will also follow the pouring to the wall in, reinforced wall does not have the reinforcing bar in the wall after the pouring, wall quality appearance quality is high.
2. The template cloth is adhered to the steel template, so that the air permeability and the water absorption of the template cloth can be fully utilized, the water marks and the air bubbles on the surface of the self-compacting concrete are discharged, and the appearance quality of the concrete wall surface is improved.
Drawings
Fig. 1 is a schematic diagram of the construction structure of the new abutment and the original abutment of the present invention.
Fig. 2 is a schematic view of the formwork mounting structure of the present invention.
Fig. 3 is a partially enlarged schematic view of a portion a in fig. 2.
Fig. 4 is a schematic view of the connection of the outer support and the formwork of the present invention.
Fig. 5 is a burst of a template and template cloth structure of the present invention.
FIG. 6 is a schematic view of the connection structure of the template and the distance adjusting sensor according to the present invention.
In the figure, 1, an original bridge platform; 11. horizontally planting a first rib; 12. horizontally planting ribs II; 2. a new abutment; 21. horizontal steel bars I; 3. a foundation wall; 31. a second horizontal reinforcing steel bar; 4. a first reinforcement cage; 5. a second reinforcement cage; 6. a plastic bullet ferrule; 7. a steel form; 71. positioning a rod; 711. a hook body; 712. a spring; 72. a steel beam; 721. hooking a groove; 73. a filler strip; 731. a support frame; 732. pressing a plate; 733. jacking the bolt; 74. a support plate; 741. tightly abutting against the bolt; 742. a rectangular groove; 743. a limiting plate; 744. pushing a spring; 8. an outer bracket; 81. a steel pipe network; 82. connecting the steel pipes; 83. a horizontal steel pipe; 831. a threaded bushing; 832. a distance adjusting rod; 833. a limiting groove; 84. a vertical steel pipe; 85. and (5) reinforcing the steel pipe.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
A channel bridge abutment body reinforcing construction method comprises the following steps:
planning distance measurement, determining distances to be lengthened at two ends of an original abutment 1 on the lower side of a channel bridge according to the width of the channel bridge to be widened, respectively marking ends of the distances to be lengthened along two ends of the original abutment 1, then measuring the width of the original abutment 1 to be reinforced towards the other original abutment 1, and marking two;
referring to fig. 1, in the second step, a new abutment 2 is constructed respectively in a direction which is towards the original abutment 1 by taking the two marks I measured in the first step as starting points, the width of the new abutment 2 is the width of the original abutment 1 after being reinforced, and a horizontal steel bar I21 protruding out of the new abutment 2 and close to the original abutment 1 is reserved on one side of the new abutment 2 close to the original abutment 1;
step three, constructing a new and old abutment foundation wall 3, namely pouring the foundation wall 3 between two new abutments 2 and an original abutment 1, wherein the foundation wall 3 is positioned on one side of the original abutment 1 far away from reinforcement, the new and old abutments are connected through the foundation wall 3, and a second horizontal reinforcing steel bar 31 protruding out of the foundation wall 3 is reserved on one side of the foundation wall 3 close to the original abutment 1;
step four, planting the steel bars on the original abutment 1, horizontally planting the steel bars on the side, to be reinforced, of the original abutment 1, and then horizontally planting the steel bars on the two ends, close to the new abutment 2, of the original abutment 1 by a second 12;
step five, building an inner reinforcement cage, building a reinforcement cage I4 according to a horizontal embedded bar I11 on the reinforcing side of an original bridge abutment 1, building a reinforcement cage II 5 according to a horizontal embedded bar II 12 at two ends of the original bridge abutment 1, a horizontal reinforcement I21 reserved on a new bridge abutment 2 and a horizontal reinforcement II 31 reserved on a foundation wall 3, wherein the outer sides of the reinforcement cage I4 and the reinforcement cage II do not exceed a mark II;
referring to fig. 2 and 3, in the sixth step, an inner support is constructed, the outer end of the horizontal steel bar planting I11 and the outer end of the horizontal steel bar II 31 are respectively sleeved with a plastic bullet head sleeve 6, so that the outer end of the plastic bullet head sleeve 6 is flush with a vertical surface where the mark II is located, namely flush with the outer sides of the two new abutment platforms 2 on the same side;
step seven, template manufacturing, namely selecting a plurality of steel templates 7 to splice and fix as a casting template, after splicing the plurality of steel templates 7 into the casting template, uniformly paving template cloth on the side, to be contacted, of the casting template and the concrete, and fixing the template cloth and the steel plate;
step eight, installing the templates, namely enabling one side of the template cloth paved by the pouring templates to face the original abutment 1 at two sides respectively, enabling two ends of the pouring templates to exceed the new abutment 2 at the same side and approach one side of each other, enabling the pouring templates to abut against the outer side of the new abutment 2 at the same side, enabling the middle part of one side of the template cloth paved by the pouring templates to abut against the plastic bullet heads at the corresponding side, and completing the support of the cloth side of the template paved by the pouring templates;
building an outer support, namely building an outer support frame 8 between the casting plates at the two sides along the length direction of the casting plates, so that the two sides of the outer support frame 8 are respectively abutted against one side of the two casting templates where the template cloth is not laid, and the side of the casting templates where the template cloth is not laid is supported;
step ten, pouring concrete, namely pouring a concrete reinforcing wall on one side of the poured template with the template cloth, so that the concrete uniformly fills the reinforcement cage I4 and the reinforcement cage II 5, and the concrete is vibrated by adopting a vibrating rod in the pouring process and lightly vibrated as much as possible;
and step eleven, removing the pouring template and the outer support after the concrete reinforced wall is formed, and periodically maintaining the concrete reinforced wall.
Referring to fig. 4 and 5, steel form 7 is made of steel plate as steel form 7, one end of each steel form 7 is horizontally provided with a positioning rod 71 capable of sliding towards the direction of steel form 7, the length direction of positioning rod 71 is the same as the length direction of steel form 7, one end of positioning rod 71 extends out of one end of steel form 7 and bends towards one side away from steel form 7 to form a hook 711, a plurality of springs 712 are further fixedly connected between steel form 7 and positioning rod 71, springs 712 are normally arranged, in normal state, springs 712 can push positioning rod 71 to move towards the direction away from steel form 7, the other end of steel form 7 is fixedly connected with a vertically arranged steel beam 72, and hook grooves 721 capable of facilitating hook 711 to be inserted into and hook 711 are formed in positions of steel beam 72 corresponding to hook 711; the equal rigid coupling in both ends has filler strip 73 about steel form 7 is provided with a surface of locating lever 71, filler strip 73 is the same with steel form 7 length direction along the length direction rigid coupling of steel form 7 and the length of filler strip 73, the equal rigid coupling in one side of keeping away from steel form 7 that steel form 7 corresponds filler strip 73 has support frame 731, it has many can tend to the clamp plate 732 of filler strip 73 direction motion to slide on support frame 731 to be connected, it rotates to connect in the tight bolt 733 in top of clamp plate 732 still all to have a plurality of tip on support frame 731 threaded connection.
When splicing steel form 7, the both ends butt joint of adjacent steel form 7, then, press the locating lever 71 of a steel form tip, make locating lever 71 tend to steel form 7 direction motion, then, one side that has girder steel 72 with another steel form 7 rigid coupling tends this steel form 7 motion, can make each locating lever 71 of a steel form 7 insert each groove 721 of locating another steel form 7, then, loosen the pressure of colluding body 711 and hold, spring 712 drives colluding body 711 and tends to keep away from steel form 7 direction motion, thereby can collude groove 721 through colluding body 711, accomplish the shaping that the firm concatenation of two steel forms 7 realized the pouring template.
When steel form 7 cladding template cloth, the upside and the downside of template cloth are taut and walk around steel form 7's upside and downside respectively, then walk around steel form upside and downside both ends with template cloth and press respectively on the filler strip 73 of locating steel form 7 upper and lower both sides, tighten tightening bolt 733 again, make tightening bolt 733 drive clamp plate 732 and tend to filler strip 73 direction motion, thereby accomplish the fixing that the both ends of template cloth walked around steel form upside and downside through clamp plate 732 and filler strip 73 interact, realize the fixed of template cloth and steel form 7.
Referring to fig. 4 and 6, the outer bracket 8 includes a plurality of steel pipe networks 81 and connection steel pipes 82 horizontally penetrating the plurality of steel pipe networks 81 and fixed to the steel pipe networks 81. Each steel pipe network 81 all includes the horizontal steel pipe 83 of many level settings and the vertical steel pipe 84 of many vertical settings, horizontal steel pipe 83 and vertical steel pipe 84 all include the mutual bolted connection of multisection steel pipe, horizontal steel pipe 83 and the mutual rigid coupling of vertical steel pipe 84, the upside both ends of steel pipe network 81 still all incline to be provided with and consolidate steel pipe 85, each is consolidated steel pipe 85 and is extended by the middle part that tends to steel pipe network 81 downwards by the both ends slope of steel pipe network 81, it still has the supporting pad to consolidate the equal rigid coupling in upper end of steel pipe 85. Horizontal steel pipe 83's both ends still all rotate and are connected with threaded sleeve 831, threaded sleeve 831 sets up with horizontal steel pipe 83 coaxial line, all still all slide along horizontal steel pipe 83's axis direction in horizontal steel pipe 83 and be connected with roll adjustment pole 832 in the both ends of horizontal steel pipe 83, roll adjustment pole 832 is the threaded rod, the spout has been seted up along roll adjustment pole 832's axis direction in one side of roll adjustment pole 832, the position rigid coupling that horizontal steel pipe 833 corresponds the spout has the draw runner of sliding connection in the spout, thereby guarantee that roll adjustment pole 832 can slide along the axis direction of horizontal steel pipe 833, roll adjustment pole 832 one end still all threaded connection in threaded sleeve 831. Spacing groove 833 has still all been seted up to the upper and lower both sides of roll adjustment pole 832 tip.
One side that steel form 7 was provided with the pressure pad still the level is provided with many backup pads 74, and the equal vertical sliding of many backup pads 74 is connected in steel form 7, and the equal threaded connection in tip of backup pad 74 still has the tight bolt 741 that supports that can butt in steel form 7. Rectangular channel 742 has all been seted up along the length direction of backup pad 74 on the surface that many backup pads 74 kept away from steel form 7, the backup pad 74 still all vertically slides and is connected with limiting plate 743 corresponding to the upper and lower both sides of rectangular channel 742, the length direction of limiting plate 743 all is the same with the length direction of backup pad 74, it has still all the rigid coupling to push away spring 744 to correspond one side that two limiting plates 743 kept away from each other on backup pad 74, under the normality, it can push away spring 744 and promote two limiting plates 743 and tend to move to two bottom surfaces about outstanding in rectangular channel 742 near the direction each other.
When outer support and template concatenation, can adjust the vertical direction position of pole according to outer support, the position of each backup pad 74 on the steel form 7 slides, then, screw up and support bolt 741, accomplish the rigidity of bracing piece, then, rotate each thread bush 831, adjust the length that distance adjusting pole 832 extends horizontal steel pipe 83, and stir two limiting plates 743 and open rectangular channel 742, make the one end of distance adjusting pole 832 extend to the rectangular channel 742 of backup pad 74 on the pouring template in, then loosen limiting plate 743, limiting plate 743 is through pushing away the spring 744 effect, can make two limiting plates 743 insert respectively and locate in the spacing groove 833 of both sides about distance adjusting pole 832, thereby accomplish the fixed of template and backup pad 74.
The implementation principle of the embodiment is as follows: through the outer end of horizontal bar planting 11 and establish one side of the 6 butt pouring templates of plastics bullet headgear respectively with the outer end of two 31 of horizontal reinforcement, the opposite side of 8 butt pouring templates of rethread outer strut, the location of pouring templates has been guaranteed on the one hand, on the other hand, after the pouring is accomplished, the template is taken off, and the tip and the pouring template point contact of plastics bullet headgear 6, plastics bullet headgear 6 also will be along with pouring to the wall in, reinforced wall does not have the reinforcing bar of outstanding in the wall after the pouring, wall quality appearance quality is high, furthermore, paste template cloth on steel form 7, the gas permeability and the hydroscopicity of template cloth can be make full use of, discharge from closely knit concrete surface line, the bubble, the appearance quality of concrete wall has been improved.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (9)
1. A channel abutment body reinforcing construction method is characterized by comprising the following steps:
planning distance measurement, determining distances needing to be lengthened at two ends of an original abutment (1) on the lower side of a channel bridge according to the width of the channel bridge needing to be widened, respectively marking ends needing to be lengthened along two ends of the original abutment (1) with a first mark, then measuring the width of the original abutment (1) needing to be reinforced towards the other original abutment (1), and making a second mark;
step two, constructing a new abutment (2), wherein the new abutment (2) is constructed in the direction which is towards the original abutment (1) by taking the two marks I measured in the step one as starting points, the width of the new abutment (2) is the width of the original abutment (1) after being reinforced, and horizontal steel bars I (21) protruding out of the new abutment (2) and close to the original abutment (1) are reserved on one side of the new abutment (2) close to the original abutment (1);
constructing a new abutment foundation wall (3), namely pouring the foundation wall (3) between two new abutments (2) and the original abutment (1), wherein the foundation wall (3) is positioned on one side, far away from reinforcement, of the original abutment (1), is connected with the new abutment and the old abutment through the foundation wall (3), and a second horizontal reinforcing steel bar (31) protruding out of the foundation wall (3) is reserved on one side, close to the original abutment (1), of the foundation wall (3);
step four, planting ribs on the original bridge abutment (1), horizontally planting a first rib (11) on the side to be reinforced of the original bridge abutment (1), and then horizontally planting a second rib (12) on the two ends, close to the new bridge abutment (2), of the original bridge abutment (1);
step five, building an inner reinforcement cage, building a reinforcement cage I (4) according to a horizontal embedded bar I (11) on the reinforcing side of an original bridge abutment (1), building a reinforcement cage II (5) according to a horizontal embedded bar II (12) on two ends of the original bridge abutment (1), a horizontal reinforcement I (21) reserved on a new bridge abutment (2) and a horizontal reinforcement II (31) reserved on a foundation wall (3), wherein the outer sides of the reinforcement cage I (4) and the reinforcement cage II do not exceed a mark II;
step six, constructing an inner support, and respectively sleeving the outer end of the horizontal steel bar I (11) and the outer end of the horizontal steel bar II (31) with plastic bullet head sleeves (6) to enable the outer ends of the plastic bullet head sleeves (6) to be flush with the vertical surface where the second marker is located, namely flush with the outer sides of the two new abutment platforms (2) on the same side;
seventhly, template manufacturing, namely splicing and fixing a plurality of steel templates (7) to form a pouring template;
step eight, installing the template, enabling two ends of the pouring template to exceed the new abutment (2) on the same side and to be close to one side, enabling the pouring template to abut against the outer side of the new abutment (2) on the same side, enabling the middle part of one side, where the template cloth is laid, of the pouring template to abut against the plastic bullet head sleeve (6) on the corresponding side, and completing supporting of the side, where the template cloth is laid, of the pouring template;
building an outer support, namely building an outer support frame (8) between the two casting templates at two sides along the length direction of the casting templates, and enabling two sides of the outer support frame (8) to be respectively abutted against one side of the two casting templates where the template cloth is not laid, so that one side of the casting templates where the template cloth is not laid is supported;
step ten, pouring concrete, namely pouring a concrete reinforcing wall on one side of the poured template with the template cloth, so that the concrete uniformly fills the reinforcement cage I (4) and the reinforcement cage II (5), wherein a vibrating rod is adopted for assisting vibration during pouring, and light vibration is paid attention to during vibration as much as possible;
step eleven, removing the pouring template and the outer support after the concrete reinforced wall is formed, and periodically maintaining the concrete reinforced wall;
the length direction rigid coupling that steel form (7) kept away from template cloth one side all has filler strip (73) the same with steel form (7) length direction along the upper and lower both ends of steel form (7), and steel form (7) correspond one side of keeping away from steel form (7) of filler strip (73) and have support frame (731), and it is connected with many clamp plates (732) that can tend to filler strip (73) direction motion to slide on support frame (731), it has a plurality of tip rotation to connect in the tight bolt in top (733) of clamp plate (732) still to equal threaded connection on support frame (731).
2. The channel abutment body reinforcement construction method according to claim 1, characterized in that: after splicing a plurality of steel templates (7) into a pouring template, uniformly laying template cloth on the side, to be contacted, of the pouring template and the concrete, fixing the template cloth and the steel templates (7), and respectively enabling one side, where the template cloth is laid, of the pouring template to face the original abutment (1) on the two sides when the template is installed.
3. The channel abutment body reinforcement construction method according to claim 1, characterized in that: outer strut (8) wear to establish many steel-pipe networks (81) and with connection steel pipe (82) of each steel-pipe network (81) rigid coupling including multi-disc steel-pipe network (81) and level, each steel-pipe network (81) all includes horizontal steel pipe (83) of many level settings and vertical steel pipe (84) of many vertical settings, horizontal steel pipe (83) and vertical steel pipe (84) mutual rigid coupling, the upside both ends of steel-pipe network (81) still all incline to be provided with and consolidate steel pipe (85), each consolidates steel pipe (85) and extends by the middle part of the both ends slope of steel-pipe network (81) downwards trend steel-pipe network (81).
4. The channel abutment body reinforcement construction method according to claim 3, characterized in that: the both ends of horizontal steel pipe (83) still all rotate and are connected with threaded sleeve pipe (831) that set up with horizontal steel pipe (83) coaxial line, all slide along the axis direction of horizontal steel pipe (83) in the both ends of horizontal steel pipe (83) and be connected with roll adjustment pole (832), roll adjustment pole (832) are the threaded rod, the equal threaded connection in threaded sleeve pipe (831) of roll adjustment pole (832) one end.
5. The channel abutment body reinforcement construction method according to claim 3, characterized in that: the horizontal steel pipe (83) and the vertical steel pipe (84) are connected by bolts of a plurality of sections of steel pipes.
6. The channel abutment body reinforcement construction method according to claim 4, characterized in that: a plurality of supporting plates (74) are horizontally arranged on one side of the steel template (7) far away from the template cloth, rectangular grooves (742) are formed in the surfaces of the supporting plates (74) far away from the steel template (7) along the length direction of the supporting plates (74), the upper and lower sides of the supporting plate (74) corresponding to the rectangular groove (742) are vertically connected with limiting plates (743) in a sliding manner, a push spring (744) which can push the two limit plates (743) to move towards the direction of approaching each other to the upper and lower bottom surfaces of the rectangular groove (742) under the normal state is also fixedly connected on the support plate (74), the length direction of the limiting plate (743) is the same as that of the supporting plate (74), one end of each distance adjusting rod (832) can extend into the rectangular groove (742), and the upper side and the lower side of the distance adjusting rod (832) are provided with limit grooves (833) which can facilitate the insertion of the limit plate (743).
7. The channel abutment body reinforcement construction method according to claim 1, characterized in that: one end level of each steel form (7) is provided with locating lever (71) that can tend to steel form (7) direction motion, one end of locating lever (71) is extended steel form (7) one end and is tend to the one side bending who keeps away from steel form (7) and be and collude body (711), still the rigid coupling has spring (712) that can promote locating lever (71) under the normality and tend to keep away from steel form (7) direction motion on steel form (7), the position that the other end of steel form (7) corresponds colludes body (711) all sets up colludes groove (721) that can be convenient for collude body (711) and insert and hook.
8. The channel abutment body reinforcement construction method according to claim 6, characterized in that: the supporting plate (74) is vertically connected to the steel formwork (7) in a sliding mode, and the end portion of the supporting plate (74) is further connected with a tightening bolt (741) capable of abutting against the steel formwork (7) in a threaded mode.
9. The channel abutment body reinforcement construction method according to claim 6, characterized in that: the upper end of the reinforced steel pipe (85) is also fixedly connected with a supporting pad.
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| JP4167149B2 (en) * | 2003-08-25 | 2008-10-15 | 財団法人鉄道総合技術研究所 | Construction method of abutment accompanying bridge reconstruction |
| CN105464002A (en) * | 2014-08-18 | 2016-04-06 | 宁波市江北交通工程有限公司 | Reinforcing construction method of reinforcing steel concrete thin-walled abutment |
| CN208701521U (en) * | 2017-10-26 | 2019-04-05 | 南京林业大学 | A kind of ruggedized construction of abutment flare |
| CN208167505U (en) * | 2018-03-16 | 2018-11-30 | 广东省冶金建筑设计研究院 | It is a kind of to hold the Abutment Reinforcement structure for tilting a miniature clump of piles using end |
| CN208395690U (en) * | 2018-05-10 | 2019-01-18 | 南京赛力克建设工程技术有限公司 | A kind of convenient Abutment Back wall crack ruggedized construction of positioning |
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Address after: No.30, Tiancheng Road, Tianqiao District, Jinan City, Shandong Province Patentee after: Shandong highway and Bridge Construction Group Co.,Ltd. Address before: No.30, Tiancheng Road, Tianqiao District, Jinan City, Shandong Province Patentee before: SHANDONG HIGHWAY & BRIDGE CONSTRUCTION Co.,Ltd. |