CN110878524B - Construction method of steel pipe concrete arch bridge installation system - Google Patents
Construction method of steel pipe concrete arch bridge installation system Download PDFInfo
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- CN110878524B CN110878524B CN201911052794.5A CN201911052794A CN110878524B CN 110878524 B CN110878524 B CN 110878524B CN 201911052794 A CN201911052794 A CN 201911052794A CN 110878524 B CN110878524 B CN 110878524B
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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
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling 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
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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
- E01D4/00—Arch-type bridges
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Abstract
The invention relates to a construction method of a steel pipe concrete arch bridge installation system, which comprises the following construction steps: 1) construction preparation; 2) pouring the arch pier; 3) the arch springing is connected and positioned; 4) assembling and connecting arch ribs; 5) the arch rib feet are connected and fixed; 6) mounting and positioning a wind brace; 7) and (5) installing and positioning the support upright. The invention has the beneficial effects that: the invention can limit the space position of the arch rib through the arch foot sleeve preset in the arch pier, thereby reducing the difficulty of space positioning of the arch rib; meanwhile, the pier inner bearing plate is preset in the arch pier, so that the influence of arch ribs on the arch pier can be effectively reduced, and the local concentrated stress is reduced; the method takes the installed arch rib as the supporting stress body to carry out the connection construction of the arch rib to be installed, and can reduce the work load of laying a field supporting system; meanwhile, the adjustable supporting columns and the adjustable supporting plates are arranged on the first platform plate, so that temporary support can be provided for arch ribs to be installed, and the difficulty in on-site hoisting and positioning is reduced.
Description
Technical Field
The invention relates to a construction method of a steel pipe concrete arch bridge installation system, belongs to the field of bridge engineering, and is suitable for the steel pipe concrete arch bridge installation engineering.
Background
The steel tube concrete arch bridge has large span, light structure and beautiful appearance, and is a bridge type suitable for various landforms and social environments. However, compared with a common concrete beam bridge, the steel pipe concrete arch bridge has a complex process, and often has the problems of difficult erection of a construction platform, difficult control of component installation accuracy, poor arch springing stability and the like, and the construction quality and efficiency are seriously influenced.
In the prior art, a construction method of a hoisting system of an underwater bracket of a steel pipe concrete arch bridge is provided, which comprises the following steps: laying platform steel pipe piles; arranging a first tie beam and an inclined strut pile; a second tie beam is arranged; the third tie beam and the platform plate are arranged; arranging stand columns; the transverse connection is arranged; hoisting arch ribs and observing stress strain; pouring concrete; and (5) dismantling the hoisting system. Corresponding components in the construction method are connected through bolts, the installation efficiency of a structural system can be improved well, the difficulty of arch rib positioning is reduced, the construction steps are complex, and the construction cost is high.
In view of this, the invention is in need of a construction method of a steel pipe concrete arch bridge installation system, which can reduce the supporting difficulty of a construction platform, improve the component installation and positioning accuracy and improve the construction quality.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide the construction method of the steel pipe concrete arch bridge installation system, which can not only reduce the supporting difficulty of a construction platform, but also improve the installation and positioning accuracy of components and improve the construction quality and the structural durability.
The construction method of the steel pipe concrete arch bridge installation system comprises the following construction steps:
1) construction preparation: preparing arch ribs meeting the design curvature requirement, connecting the arch ribs of each section with the tie bars among the ribs into a whole, and surveying and mapping to determine the spatial position of the concrete-filled steel tube arch bridge;
2) pouring construction of the arch pier: after the bearing plate in the pier is firmly connected with the arch springing sleeve, the spatial position of the arch springing sleeve is further checked; firstly, presetting an inner pier bearing plate connected with an arch foot sleeve in an arch pier, and then performing pouring construction of arch pier concrete;
3) and (3) arch springing connection positioning: after the arch pier forms the intensity, the arch rib is arranged in the pipe cavity of the arch foot sleeve in a penetrating way and is welded and connected with the arch foot sleeve into a whole;
4) the arch rib is spliced and connected: the installed arch rib is taken as a supporting stress body, an upper layer supporting plate and a lower layer supporting plate are respectively arranged on the upper surface and the lower surface of the arch rib, and the upper layer supporting plate and the lower layer supporting plate are firmly connected with the arch rib through a supporting plate fastening hoop; connecting the lower layer supporting plate with the first platform plate through a first fixed supporting column; an adjustable support column is arranged on the upper surface of the cantilever edge of the first platform plate, and a support plate rotating hinge is arranged between the top end of the adjustable support column and an adjustable support plate; firstly, adjusting the elevation of the adjustable supporting column, correcting the elevation of the top surface of the adjustable supporting plate, hoisting the arch rib to be installed to the upper surface of the adjustable supporting plate, and firmly connecting the installed arch rib and the arch rib to be installed through the connecting hoop plate;
5) the arch rib foot part is connected and fixed: the upper part and the lower part of the arch rib are respectively provided with a second hanging plate and a first hanging plate, and the first hanging plate and the second hanging plate are firmly connected through a hanging plate connecting bolt; a first supporting body and a lower supporting frame are arranged on the lower surface of the first hanging plate, and a second supporting body and an upper supporting frame are arranged on the upper surface of the second hanging plate; respectively arranging an arch foot bottom die and an arch foot top die on the lower side and the upper side of an arch rib, connecting a suspension upright rod with a connecting sleeve on a top die hanging plate on the upper surface of the arch foot top die, and connecting a support upright rod with a connecting sleeve on a bottom die supporting plate on the lower surface of the arch foot bottom die; respectively arranging a bottom die airtight plate and a top die airtight plate at the connecting ends of the arch foot bottom die, the arch foot top die and the arch pier, and arranging end dies at the other ends of the arch foot bottom die and the arch foot top die; the vertical positions of an arch springtop die and an arch springbottom die are controlled by a vertical rod adjusting bolt, and then the opposite arch springbottom die and the arch springtop die are tightly connected by a template fastening bolt; the position of the end die is defined by the first support body and the second support body respectively; the template closed layer is tightly connected with the arch pier through a third support body and a fourth support body respectively; after checking that the spatial position of the arch rib meets the requirement, pouring arch springing concrete into a cavity formed by enclosing the arch pier, the arch springing top mold and the arch springing bottom mold;
6) wind brace installation positioning: an upper base plate and a lower base plate are respectively arranged on the upper surface and the lower surface of two rows of arch ribs which are longitudinally parallel to each other; firstly, a hoop plate and a hoop cover plate are arranged on the outer sides of an upper base plate and a lower base plate, and the upper base plate and the lower base plate are firmly connected with arch ribs through hoop plate position control bolts; arranging a second fixed support column on the lower surface of the lower backing plate, and vertically welding the second fixed support column and the lower backing plate; a hanging rotating wheel is arranged on the lower surface of the hoop plate opposite to the mirror image, one end of a lifting rope is connected with a lifting machine, and the other end of the lifting rope penetrates through the hanging rotating wheel and then is connected with a lifting platform plate; controlling the elevation of the lifting platform plate through a lifting rope to carry out cross brace construction operation;
7) and (3) mounting and positioning a support column: the upper surface and the lower surface of the arch rib at one side of the supporting upright post are respectively provided with a second hanging plate and a first hanging plate, and the lower surface of the arch rib at the other side of the supporting upright post is provided with a third hanging plate; a hanging plate connecting bolt is arranged between the second hanging plate and the hanging plate ear plate of the first hanging plate, and the second hanging plate and the first hanging plate are firmly connected with the arch rib through the hanging plate connecting bolt; the third hanging plate is firmly connected with the arch rib through the hanging plate stirrup; an upright post position-correcting bolt is arranged on the second hanging plate, and a positioning hoop is arranged at the joint of the upright post position-correcting bolt and the supporting upright post; the third platform hanging plate is firmly connected with the first hanging plate and the third hanging plate through the third platform hanging rod; the bottom end of the supporting upright post is inserted into a tube cavity of an upright post sleeve on the arch rib, the spatial position of the supporting upright post is controlled through an upright post position-correcting bolt, then a supporting arc plate at the bottom end of an upright post outer mold is firmly connected with the arch rib through a template stirrup, and then the concrete pouring construction at the side of the post is carried out.
Preferably, the method comprises the following steps: and 2) adopting a steel plate or a concrete precast plate as the pier inner bearing plate.
Preferably, the method comprises the following steps: step 3) rolling the arch springing sleeves and the arch ribs by using steel pipes; the curvature of the arch foot sleeve is the same as that of the arch rib, and the inner diameter of the arch foot sleeve is the same as the outer diameter of the arch rib; and an intercostal tie bar is arranged between the arch ribs.
Preferably, the method comprises the following steps: step 4) the upper layer supporting plate, the lower layer supporting plate and the adjustable supporting plate are all formed by rolling steel plates, and the curvature of the upper layer supporting plate, the lower layer supporting plate and the adjustable supporting plate is the same as that of the connected arch ribs; the first fixed supporting column is formed by rolling a steel pipe, the first fixed supporting column is connected with the lower supporting plate and the first platform plate in a welding mode, and a supporting column inclined strut is arranged between the first fixed supporting column and the lower supporting plate.
Preferably, the method comprises the following steps: and 4) arranging a connecting slot at the empty edge of the first platform plate, arranging a connecting slot at the empty edge of the second platform plate, arranging a second fixed support pillar on the second platform plate, connecting the connecting slot with a platform guardrail, and arranging a guardrail connecting rod between the platform guardrail and the adjacent first fixed support pillar or the adjacent adjustable support pillar or the adjacent second fixed support pillar.
Preferably, the method comprises the following steps: step 5), the cross sections of the arch foot bottom die and the arch foot top die are semicircular, template ear plates are arranged on the arch foot bottom die and the arch foot top die, a bottom die sealing plate and a top die sealing plate are arranged at the joint of the template ear plates of the arch foot bottom die and the arch foot top die, and the tightness of the arch foot bottom die and the arch foot top die is controlled through a template fastening bolt; a bottom die supporting plate and a top die hanging plate are respectively arranged on the arch foot bottom die and the arch foot top die, and the arch foot bottom die and the bottom die supporting plate and the arch foot top die and the top die hanging plate are firmly connected through template studs; the bottom die supporting plate and the top die hanging plate are both provided with connecting sleeves; the cross sections of the second hanging plate and the first hanging plate are both arc-shaped, and hanging plate ear plates connected with the hanging plate connecting bolts are arranged on the second hanging plate and the first hanging plate; the first support body, the second support body, the third support body and the fourth support body respectively comprise support body screw rods, support body bolts and support body press plates, wherein the fastening directions of the support body screw rods connected with the two sides of the support body bolts are opposite, rod end rotating hinges are arranged at the end parts of the support body screw rods connected with the two sides of the support body bolts, and the support body press plates are connected with the support body screw rods through the rod end rotating hinges; the support body pressing plate at one end of the fourth support body is connected with the top die sealing plate, the rod end rotating hinge at the other end of the fourth support body is connected with the pier top supporting plate, and a supporting anchor bar is arranged between the pier top supporting plate and the arch pier; the cross sections of the upper support frame and the lower support frame are L-shaped, the upper support frame and the lower support frame are respectively provided with a hanging upright rod and a supporting upright rod, and the lengths of the hanging upright rod and the supporting upright rod are controlled through upright rod adjusting bolts; the end mold is perpendicularly connected with the arch springing bottom mold and the arch springing top mold, the mold plate sealing layer comprises a bottom mold sealing plate and a top mold sealing plate, the bottom mold sealing plate is connected with the arch springing bottom mold and the top mold sealing plate through pasting, and the bottom mold sealing plate and the top mold sealing plate are formed by cutting rubber plates.
Preferably, the method comprises the following steps: step 6) the upper backing plate and the lower backing plate are both formed by rolling steel plates, the longitudinal curvature of the upper backing plate and the longitudinal curvature of the lower backing plate are the same as those of the connected arch ribs, and the upper backing plate and the lower backing plate are transversely tightly attached and connected with the arch ribs; two vertical plates of the hoop plate are respectively provided with a position control transverse plate, the position control transverse plates are vertically welded with the vertical plates of the hoop plate, and a hoop plate position control bolt is arranged between the position control transverse plates opposite to the mirror images; the cross section of the hoop cover plate is L-shaped, a cover plate rotating shaft is arranged at the joint of one side of the hoop cover plate and the hoop plate, and the other side of the hoop cover plate is connected with the hoop plate through a cover plate stud; the transverse support is formed by rolling steel pipes or section steel and is arranged between two rows of longitudinal mutually parallel arch ribs.
Preferably, the method comprises the following steps: step 7), rolling the stand column sleeve by adopting a steel plate, wherein 2-4 guide connecting grooves are annularly arranged on the inner side wall of the stand column sleeve, and 1-2 guide connecting grooves are arranged in the height direction of the stand column sleeve; the supporting upright post is formed by rolling a steel pipe, and a guide connecting plate connected with the guide connecting groove is arranged on the outer side wall of the supporting upright post; the cross sections of the first hanging plate and the second hanging plate are semicircular, hanging plate ear plates are arranged on the first hanging plate and the second hanging plate, and the longitudinal curvature of the first hanging plate and the second hanging plate is the same as that of the connected arch ribs; the outer die of the upright column comprises two semicircular outer die vertical plates, an outer die sealing layer is arranged at the joint of the outer die ear plates of the two opposite outer die vertical plates, and the sealing property of the outer die of the upright column is controlled through an outer die fastening bolt.
The invention has the beneficial effects that:
(1) the invention can limit the space position of the arch rib through the arch foot sleeve preset in the arch pier, thereby reducing the difficulty of space positioning of the arch rib; meanwhile, the pier inner bearing plate is preset in the arch pier, so that the influence of the arch rib on the arch pier can be effectively reduced, and the local concentrated stress is reduced.
(2) The method takes the installed arch rib as the supporting stress body to carry out the connection construction of the arch rib to be installed, and can reduce the work load of laying a field supporting system; meanwhile, the adjustable supporting columns and the adjustable supporting plates are arranged on the first platform plate, so that temporary support can be provided for arch ribs to be installed, and the difficulty in on-site hoisting and positioning is reduced.
(3) According to the invention, the upper base plate and the lower base plate are firmly connected with the arch rib through the hoop plate position control bolts on the hoop plate, so that the mounting difficulty of the second platform plate can be effectively reduced; meanwhile, the lifting platform plate is arranged between the second platform plates which are longitudinally opposite, so that the difficulty in building the cross brace installation construction platform is reduced.
(4) According to the invention, the bottom die airtight plate and the top die airtight plate are arranged at the joint end of the arch foot bottom die and the arch foot top die and the arch pier, and the end die is arranged at the other end, so that the support airtightness of the arch foot die plate of the die plate can be effectively improved; meanwhile, the arch springing bottom die and the arch springing top die are connected through the template fastening bolt, so that the difficulty of template connection can be reduced; in addition, the upper support frame and the lower support frame are fixed through the second hanging plates and the first hanging plates which are pre-arranged at the upper part and the lower part of the arch rib, so that the difficulty of the arrangement of a support system can be effectively reduced; the lengths of the first support body, the second support body, the third support body and the fourth support body can be adjusted on site according to needs, so that the accuracy of supporting and position control is improved; the pier inner bearing plate connected with the arch springing sleeve is preset in the arch pier, and the bottom end of the arch rib is inserted into the pipe cavity of the arch springing sleeve, so that the local stress can be effectively reduced, and the stress performance of the arch pier structure is improved.
(5) The invention can limit the space position of the supporting column through the column position correcting bolt, the column sleeve and the guide connecting groove at the inner side of the column sleeve, thereby improving the positioning accuracy of the supporting column; meanwhile, the outer mold of the upright post is connected with the arch rib through the supporting arc plate, so that the mounting and positioning difficulty of the outer mold of the upright post can be reduced, and the problem of local slurry leakage can be avoided; the first hanging plate and the third hanging plate are firmly connected with the arch rib through the hanging plate connecting bolt and the hanging plate stirrup respectively, and the construction supporting difficulty of the third flat bedplate can be effectively reduced.
(6) The first platform plate, the second platform plate and the third platform plate can move longitudinally along the arch rib under the action of external mechanical lifting, so that the difficulty in laying and shifting of the construction platform can be effectively reduced.
Drawings
FIG. 1 is a flow chart of the construction process of the steel pipe concrete arch bridge of the present invention;
FIG. 2 is a schematic view of the arch springing connection structure;
FIG. 3 is a schematic view of the construction structure of assembling and connecting arch ribs;
FIG. 4 is a schematic view of a steel tube rib arch foot mounting structure;
FIG. 5 is a schematic view of the connection structure of the arch springing bottom die and the arch springing top die;
FIG. 6 is a cross-sectional view of the first peg board or the second peg board of FIG. 4;
FIG. 7 is a schematic view of a wind brace installation and positioning construction structure;
FIG. 8 is a schematic view of a support column installation construction;
FIG. 9 is a schematic view of the pillar outer mold structure of FIG. 8;
fig. 10 is a schematic view of the support column and column sleeve connection of fig. 8.
Description of reference numerals: 1-a rib; 2-an intercostal tie bar; 3-pier inner bearing plate; 4-arch foot sleeve; 5-arch pier; 6-arch concrete; 7-upper supporting plate; 8-lower supporting plate; 9-stay plate fastening hoop; 10-a first platen; 11-a first stationary stake; 12-adjustable support columns; 13-adjustable supporting plates; 14-a supporting plate rotating hinge; 15-connecting the hoop plate; 16-upper backing plate; 17-lower backing plate; 18-a hoop plate; 19-hoop cover plate; 20-a hoop plate position control bolt; 21-a second stationary stake; 22-hanging wheels; 23-lifting a rope; 24-a pulling mechanism; 25-horizontal bracing; 26-a support column; 27-a second hanging plate; 28-a first hanging plate; 29-a third hanging plate; 30-hanging ear plates; 31-hanging board connecting bolts; 32-hanging plate hooping; 33-upright post position correction bolt; 34-a positioning collar; 35-a third platform hanging plate; 36-third platform boom; 37-column sleeve; 38-column external mold; 39-supporting arc plates; 40-formwork hooping; 41-template ear plate; 42-a first support; 43-lower support frame; 44-a second support; 45-upper supporting frame; 46-arch springing bottom die; 47-arch springing top mold; 48-hanging vertical rods; 49-top mould hanging plate; 50-a connecting sleeve; 51-supporting upright rods; 52-bottom die supporting plate; 53-bottom die sealing plate; 54-top mold closing plate; 55-end mold; 56-upright rod adjusting bolt; 57-template fastening bolts; 58-a third support; 59-a fourth support; 60-column side concrete; 61-bracing strut diagonal bracing; 62-a connection slot; 63-platform fence; 64-guardrail linkages; 65-a template sealing layer; 66-external mold fastening bolt; 67-outer mold sealing layer; 68-outer mold ear plate; 69-template pegs; 70-a support screw; 71-support bolt; 72-a support platen; 73-a rod end rotating hinge; 74-pier top supporting plate; 75-supporting anchor bars; 76-position control transverse plate; 77-cover plate rotating shaft; 78-cover plate stud; 79-guiding connecting groove; 80-a guide connection plate; 81-external mold vertical plates; 82-lifting the platform plate; 83-second platen.
Detailed Description
The present invention will be further described with reference to the following examples. The following examples are set forth merely to aid in the understanding of the invention. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Referring to fig. 1, the construction method for installing the steel pipe concrete arch bridge includes the following construction steps:
1) construction preparation: preparing an arch rib 1 meeting the design curvature requirement, connecting the arch rib 1 of each section with an intercostal tie bar 2 into a whole according to the design requirement, and surveying and mapping to determine the spatial position of the concrete-filled steel tube arch bridge;
2) and (3) pouring construction of the arch pier 5: after the pier inner pressure-bearing plate 3 is firmly connected with the arch springing sleeve 4, the spatial position of the arch springing sleeve 4 is further checked; firstly, presetting an inner pier bearing plate 3 connected with an arch springing sleeve 4 in an arch pier 5, and then performing concrete pouring construction on the arch pier 5;
3) and (3) arch springing connection positioning: after the arch pier 5 forms the strength, the arch rib 1 is arranged in the pipe cavity of the arch foot sleeve 4 in a penetrating way and is welded and connected with the arch foot sleeve 4 into a whole;
4) the arch rib 1 is assembled and connected: the installed arch rib 1 is used as a supporting stress body, an upper layer supporting plate 7 and a lower layer supporting plate 8 are respectively arranged on the upper surface and the lower surface of the arch rib 1, and the upper layer supporting plate 7 and the lower layer supporting plate 8 are firmly connected with the arch rib 1 through a supporting plate fastening hoop 9; connecting the lower layer supporting plate 8 with the first platform plate 10 through a first fixed supporting column 11; an adjustable support column 12 is arranged on the upper surface of the cantilever edge of the first platform plate 10, and a support plate rotating hinge 14 is arranged between the top end of the adjustable support column 12 and an adjustable support plate 13; firstly, adjusting the elevation of the adjustable supporting column 12, correcting the elevation of the top surface of the adjustable supporting plate 13, hoisting the arch rib 1 to be installed to the upper surface of the adjustable supporting plate 13, and firmly connecting the installed arch rib 1 with the arch rib 1 to be installed through the connecting hoop plate 15;
5) the foot part of the arch rib 1 is connected and fixed: the upper part and the lower part of the arch rib 1 are respectively provided with a second hanging plate 27 and a first hanging plate 28, and the first hanging plate 28 and the second hanging plate 27 are firmly connected through a hanging plate connecting bolt 31; a first supporting body 42 and a lower supporting frame 43 are arranged on the lower surface of the first hanging plate 28, and a second supporting body 44 and an upper supporting frame 45 are arranged on the upper surface of the second hanging plate 27; respectively placing an arch foot bottom die 46 and an arch foot top die 47 on the lower side and the upper side of an arch rib 1, connecting a suspension upright rod 48 with a connecting sleeve 50 on a top die hanging plate 49 on the upper surface of the arch foot top die 47, and connecting a supporting upright rod 51 with a connecting sleeve 50 on a bottom die supporting plate 52 on the lower surface of the arch foot bottom die 46; a bottom die airtight plate 53 and a top die airtight plate 54 are respectively arranged at the connecting ends of the arch foot bottom die 46, the arch foot top die 47 and the arch pier 5, and end dies 55 are respectively arranged at the other ends of the arch foot bottom die 46 and the arch foot top die 47; the vertical positions of the arch springtop die 47 and the arch springbottom die 46 are controlled by the upright rod adjusting bolt 56, and then the opposite arch springbottom die 46 and the arch springtop die 47 are tightly connected by the template fastening bolt 57; the position of the end die 55 is defined by the first support 42 and the second support 44, respectively; the formwork sealing layer 65 is tightly connected with the arch pier 5 through the third support body 58 and the fourth support body 59; (ii) a After checking that the spatial position of the arch rib 1 meets the requirements, pouring arch springing concrete 6 into a cavity formed by enclosing the arch pier 5, the arch springing top die 47 and the arch springing bottom die 46;
6) wind brace installation positioning: an upper cushion plate 16 and a lower cushion plate 17 are respectively arranged on the upper surface and the lower surface of two rows of arch ribs 1 which are longitudinally parallel to each other; firstly, a hoop plate 18 and a hoop cover plate 19 are arranged on the outer sides of an upper cushion plate 16 and a lower cushion plate 17, and the upper cushion plate 16 and the lower cushion plate 17 are firmly connected with the arch rib 1 through a hoop plate position control bolt 20; a second fixed support column 21 is arranged on the lower surface of the lower backing plate 17, and the second fixed support column 21 is vertically welded with the lower backing plate 17; a hanging rotating wheel 22 is arranged on the lower surface of the hoop plate 18 opposite to the mirror image, one end of a lifting rope 23 is connected with a lifting machine 24, and the other end of the lifting rope penetrates through the hanging rotating wheel 22 and then is connected with a lifting platform plate 82; the elevation of the lifting platform plate 82 is controlled through the lifting rope 23, and the construction operation of the cross brace 25 is carried out;
7) the support column 26 is installed and positioned: the upper surface and the lower surface of the arch rib 1 at one side of the supporting upright post 26 are respectively provided with a second hanging plate 27 and a first hanging plate 28, and the lower surface of the arch rib 1 at the other side of the supporting upright post 26 is provided with a third hanging plate 29; a hanging plate connecting bolt 31 is arranged between the hanging plate ear plates 30 of the second hanging plate 27 and the first hanging plate 28, and the second hanging plate 27 and the first hanging plate 28 are firmly connected with the arch rib 1 through the hanging plate connecting bolt 31; the third hanging plate 29 is firmly connected with the arch rib 1 through the hanging plate hooping 32; an upright post position-correcting bolt 33 is arranged on the second hanging plate 27, and a positioning hoop 34 is arranged at the joint of the upright post position-correcting bolt 33 and the support upright post 26; the third platform hanging plate 35 is firmly connected with the first hanging plate 28 and the third hanging plate 29 through the third platform hanging rod 36; the bottom end of a supporting upright post 26 is inserted into a tube cavity of an upright post sleeve 37 on an arch rib 1, the spatial position of the supporting upright post 26 is controlled by an upright post position-correcting bolt 33, a supporting arc plate 39 at the bottom end of an upright post outer die 38 is firmly connected with the arch rib 1 through a template stirrup 40, and then the pouring construction of concrete 60 at the column side is carried out.
Referring to fig. 2 to 10, in the steel pipe concrete arch bridge installation system, an inner pier pressure-bearing plate 3 is preset in an arch pier 5, and the position of an arch rib 1 can be limited by an arch foot sleeve 4 preset in the arch pier 5; an adjustable support column 12 and an adjustable support plate 13 are arranged on the first platform plate 10 to provide temporary support for the arch rib 1 to be installed; the upper backing plate 16 and the lower backing plate 17 are firmly connected with the arch rib 1 through the hoop plate position control bolts 20 on the hoop plate 18, and a lifting platform plate 82 is arranged between the second platform plates 83 which are opposite in the longitudinal direction; the position of the support column 26 is limited by the column position-correcting bolt 33, the column sleeve 37 and the guide connecting groove 79 on the inner side of the column sleeve; the column outer mold 38 is connected with the arch rib 1 through a support arc plate 39; the first hanging plate 28 and the third hanging plate 29 are firmly connected with the arch rib 1 through the hanging plate connecting bolt 31 and the hanging plate stirrup 32, so that the supporting difficulty of the third platform hanging plate 35 can be reduced; the first platform board 10, the second platform board 83 and the third platform hanging board 35 can slide along the arch rib 1 longitudinally.
The rib 1 is made of a steel pipe with strength grade Q345D and specification phi 750 multiplied by 14.
The intercostal tie bars 2 and the wales 25 are both made of steel pipes with strength grade Q345D and specification of phi 300 multiplied by 10.
The pier inner bearing plate 3 is made of a steel plate with the strength grade of Q345D, the thickness of 20mm and the width and height of 1000 mm.
The arch springing sleeve 4 is rolled by a steel plate with the strength grade of Q345D and the thickness of 12mm, the curvature of the arch springing sleeve 4 is the same as that of the arch rib 1, and the inner diameter is the same as the outer diameter of the arch rib 1.
The arch pier 5 and the arch foot concrete 6 are both formed by pouring concrete with the strength grade of C50.
The upper layer supporting plate 7, the lower layer supporting plate 8 and the adjustable supporting plate 13 are all formed by rolling steel plates with the strength grade of Q345D and the thickness of 10mm, and the curvature of the steel plates is the same as that of the connected arch ribs 1.
The supporting plate fastening hoop 9 is formed by rolling a steel plate with the thickness of 20mm, and the width of the supporting plate fastening hoop is 10 cm.
The first platform plate 10 is formed by rolling a steel plate with the thickness of 20mm, the plane width is 2m, the length is 4m, and the first platform plate is vertically welded and connected with the first fixed support column 11. The first fixed stay 11 is formed by rolling a steel pipe with the diameter of 500 mm.
The adjustable support column 12 is formed by rolling a steel pipe with the diameter of 300mm, and a bolt capable of adjusting the height of the adjustable support column is arranged on the adjustable support column; the bottom end of the adjustable support column 12 is vertically welded with the first platform plate 10, and the top end is provided with a support plate rotating hinge 14. The supporting plate rotating hinge 14 adopts a universal ball hinge with the diameter of 300 mm.
The connecting hoop plate 15 is formed by rolling a steel plate with the thickness of 20 mm.
The upper backing plate 16 and the lower backing plate 17 are both formed by rolling steel plates with the thickness of 2mm, the longitudinal curvature of the upper backing plate is the same as that of the connected arch rib 1, and the upper backing plate and the lower backing plate are transversely tightly attached and connected with the arch rib 1.
The hoop plate 18 is formed by rolling a steel plate with the thickness of 20mm and is connected with the hoop cover plate 19 through a cover plate rotating shaft 77 and a cover plate stud 78; the cover plate rotating shaft 77 is a stainless steel rotating shaft with the diameter of 20 mm; the cover plate pegs 78 are stainless steel bolts of 30mm diameter. The hoop cover plate 19 is L-shaped in cross section and is formed by rolling a steel plate with the thickness of 20 mm.
The hoop plate position control bolt 20 is a high-strength bolt with the diameter of 20mm, and the fastening directions of the screws on the two sides of the adjusting bolt are opposite.
The second fixed stay 21 is formed by rolling a steel pipe material with the diameter of 100 mm.
The hanging wheel 22 is a 6-inch stainless steel tube wheel.
The lifting rope 23 is made of a steel wire rope with a diameter of 16 mm.
The pulling mechanism 24 employs a 380v motor hoist.
The support column 26 is formed by rolling a steel pipe with the strength grade of Q345, the diameter of 500mm and the wall thickness of 12 mm.
The cross sections of the second hanging plate 27, the first hanging plate 28 and the third hanging plate 29 are arc-shaped and are formed by rolling steel plates with the thickness of 10 mm.
The ear plate 30 is formed by cutting a steel plate with the thickness of 20mm, the width of the ear plate is 20cm, and the length of the ear plate is 30 cm.
The hanging plate connecting bolt 31 is a high-strength bolt with the diameter of 50 mm.
The clevis stirrup 32 is a U-shaped bolt with the diameter d of 60 mm.
The upright post position-correcting bolt 33 is formed by rolling a steel pipe with the diameter of 100mm, and the fastening directions of the screws on the two sides of the connecting bolt are opposite.
The positioning hoop 34 has the same inner diameter as the support column 26 and is composed of two semicircular hoop plates and connecting bolts.
The third platform hanging plate 35 is cut from a steel plate with a thickness of 10 mm.
The third platform hanging rod 36 is formed by cutting a steel pipe with the diameter of 100mm and is vertically welded and connected with the third platform hanging plate 35.
The column sleeve 37 is rolled from a steel plate with a wall thickness of 10 mm.
The column outer die 38 comprises two semicircular outer die vertical plates 81, and is formed by rolling alloy materials with the thickness of 10mm and the diameter of 750 mm.
The supporting arc plate 39 and the column outer die 38 are integrally rolled.
The template stirrup 40 is formed by rolling a steel plate with the wall thickness of 1mm and the width of 2 cm.
The first support 42, the second support 44, the third support 58 and the fourth support 59 each include a support screw 70, a support bolt 71 and a support pressing plate 72. Wherein the diameter of the support body screw rod 70 is 30mm, and the fastening directions of the support body screw rods 70 at the two sides of the support body bolt 71 are opposite; the support body pressing plate 72 is formed by rolling a steel plate with the thickness of 10mm and is connected with the support body screw rod 70 through a rod end rotating hinge 73, and the rod end rotating hinge 73 is a spherical hinge with the diameter of 30 mm.
The cross sections of the upper support frame 45 and the lower support frame 43 are L-shaped and are rolled by H-shaped steel of 100 multiplied by 6 multiplied by 8.
The cross sections of the arch springing bottom die 46 and the arch springing top die 47 are semicircular and are formed by rolling steel plates with the thickness of 10 mm; the template ear plates 41 are integrally rolled with the arch foot bottom die 46 and the arch foot top die 47, and the width thereof is 10 cm.
The top die hanging plate 49 and the bottom die supporting plate 52 are both formed by rolling steel plates with the thickness of 10 mm.
The connecting sleeve 50 is made of a steel pipe material by rolling.
The supporting upright rod 51 is formed by rolling a steel pipe with the diameter of 50 mm.
The template sealing layer 65 comprises a bottom die sealing plate 53 and a top die sealing plate 54 which are formed by cutting rubber plates with the thickness of 10mm and are connected with the arch foot bottom die 46 and the arch foot top die 47 in a sticking mode.
The end mold 55 is formed by rolling a steel plate with the thickness of only 10mm, and is connected with the arch springing bottom mold 46 and the arch springing top mold 47 in a welding mode.
The upright rod adjusting bolt 56 and the template fastening bolt 57 are high-strength bolts with the diameter of 30 mm.
The column-side concrete 60 is concrete having a strength grade of C50.
The bracing strut bracing 61 is cut from 300 × 300 × 10 × 15H-shaped steel.
The connecting socket 62 is 5cm deep.
The platform guard rail 63 and the guard rail connecting rod 64 are both made of steel pipes with a diameter of 50 mm.
The outer mold fastening bolt 66 is made of a high-strength bolt having a diameter of 30 mm.
The outer mold sealing layer 67 is formed by cutting a rubber plate with the thickness of 10 mm.
The outer die ear plate 68 is formed by integrally rolling an alloy plate with the thickness of 10mm and the outer die vertical plate 81.
The template pegs 69 are made of stainless steel bolts of 20mm diameter.
The pier top supporting plate 74 is made of a steel plate with a thickness of 20mm, and has a height of 50cm and a width of 50 cm.
The support anchor bars 75 are made of steel pipes with a diameter of 60 mm.
The position control cross plate 76 is made of a steel plate with the thickness of 20 mm.
The guide connecting groove 79 is formed by rolling a steel plate with the thickness of 2mm, the groove depth is 20mm, and the groove width is 10 mm. The guide connecting plate 80 is made of a steel plate with a thickness of 8mm and a width of 30 mm. The pull platform plate 82 and the second platform plate 83 are each made of a steel plate having a thickness of 10 mm.
Claims (8)
1. The construction method of the steel pipe concrete arch bridge installation system is characterized by comprising the following steps: the method comprises the following construction steps:
1) construction preparation: preparing arch ribs (1) meeting the design curvature requirement, connecting the arch ribs (1) of each section with the tie bars (2) between the ribs into a whole, and surveying and mapping to determine the spatial position of the concrete-filled steel tube arch bridge;
2) pouring construction of the arch pier (5): after the pier inner pressure-bearing plate (3) is firmly connected with the arch springing sleeve (4), the spatial position of the arch springing sleeve (4) is further checked; the method comprises the steps that firstly, a pier inner pressure bearing plate (3) connected with an arch foot sleeve (4) is preset in an arch pier (5), and then pouring construction of concrete of the arch pier (5) is carried out;
3) and (3) arch springing connection positioning: after the arch pier (5) forms the strength, the arch rib (1) is arranged in the cavity of the arch springing sleeve (4) in a penetrating way and is welded and connected with the arch springing sleeve (4) into a whole;
4) the arch rib (1) is spliced and connected: the installed arch rib (1) is used as a supporting stress body, an upper layer supporting plate (7) and a lower layer supporting plate (8) are respectively arranged on the upper surface and the lower surface of the arch rib (1), and the upper layer supporting plate (7) and the lower layer supporting plate (8) are firmly connected with the arch rib (1) through a supporting plate fastening hoop (9); the lower supporting plate (8) is connected with the first platform plate (10) through a first fixed supporting column (11); an adjustable support column (12) is arranged on the upper surface of the cantilever edge of the first platform plate (10), and a support plate rotating hinge (14) is arranged between the top end of the adjustable support column (12) and an adjustable support plate (13); firstly, the elevation of an adjustable supporting column (12) is adjusted, the elevation of the top surface of an adjustable supporting plate (13) is corrected, then the arch rib (1) to be installed is hoisted to the upper surface of the adjustable supporting plate (13), and the installed arch rib (1) and the arch rib (1) to be installed are firmly connected through a connecting hoop plate (15);
5) the foot part of the arch rib (1) is connected and fixed: the upper part and the lower part of the arch rib (1) are respectively provided with a second hanging plate (27) and a first hanging plate (28), and the first hanging plate (28) and the second hanging plate (27) are firmly connected through a hanging plate connecting bolt (31); a first supporting body (42) and a lower supporting frame (43) are arranged on the lower surface of the first hanging plate (28), and a second supporting body (44) and an upper supporting frame (45) are arranged on the upper surface of the second hanging plate (27); respectively placing an arch foot bottom die (46) and an arch foot top die (47) on the lower side and the upper side of an arch rib (1), connecting a suspension upright rod (48) with a connecting sleeve (50) on a top die hanging plate (49) on the upper surface of the arch foot top die (47), and connecting a support upright rod (51) with a connecting sleeve (50) on a bottom die supporting plate (52) on the lower surface of the arch foot bottom die (46); a bottom die airtight plate (53) and a top die airtight plate (54) are respectively arranged at the connecting ends of the arch foot bottom die (46), the arch foot top die (47) and the arch pier (5), and end dies (55) are respectively arranged at the other ends of the arch foot bottom die (46) and the arch foot top die (47); the vertical positions of an arch springtop die (47) and an arch springbottom die (46) are controlled by a vertical rod adjusting bolt (56), and then the corresponding arch springbottom die (46) and the arch springtop die (47) are tightly connected by a template fastening bolt (57); defining the position of the end dies (55) by means of a first support (42) and a second support (44), respectively; the template sealing layer (65) is tightly connected with the arch pier (5) through a third support body (58) and a fourth support body (59) respectively; after checking that the space position of the arch rib (1) meets the requirement, pouring arch springing concrete (6) into a cavity formed by enclosing the arch pier (5), the arch springing top die (47) and the arch springing bottom die (46);
6) wind brace installation positioning: an upper cushion plate (16) and a lower cushion plate (17) are respectively arranged on the upper surface and the lower surface of two rows of arch ribs (1) which are longitudinally parallel to each other; firstly, a hoop plate (18) and a hoop cover plate (19) are arranged on the outer sides of an upper cushion plate (16) and a lower cushion plate (17), and the upper cushion plate (16) and the lower cushion plate (17) are firmly connected with an arch rib (1) through a hoop plate position control bolt (20); a second fixed support column (21) is arranged on the lower surface of the lower backing plate (17), and the second fixed support column (21) is vertically welded and connected with the lower backing plate (17); a hanging rotating wheel (22) is arranged on the lower surface of the hoop plate (18) which is opposite in a mirror image manner, one end of a lifting rope (23) is connected with a lifting machine (24), and the other end of the lifting rope penetrates through the hanging rotating wheel (22) and then is connected with a lifting platform plate (82); the elevation of the lifting platform plate (82) is controlled through the lifting rope (23) to carry out construction operation of the cross brace (25);
7) the support column (26) is installed and positioned: the upper surface and the lower surface of the arch rib (1) at one side of the supporting upright post (26) are respectively provided with a second hanging plate (27) and a first hanging plate (28), and the lower surface of the arch rib (1) at the other side of the supporting upright post (26) is provided with a third hanging plate (29); a hanging plate connecting bolt (31) is arranged between the second hanging plate (27) and a hanging plate ear plate (30) of the first hanging plate (28), and the second hanging plate (27) and the first hanging plate (28) are firmly connected with the arch rib (1) through the hanging plate connecting bolt (31); the third hanging plate (29) is firmly connected with the arch rib (1) through the hanging plate stirrup (32); an upright post position-correcting bolt (33) is arranged on the second hanging plate (27), and a positioning hoop (34) is arranged at the joint of the upright post position-correcting bolt (33) and the supporting upright post (26); the third platform hanging plate (35) is firmly connected with the first hanging plate (28) and the third hanging plate (29) through a third platform hanging rod (36); the bottom end of a support upright post (26) is inserted into a tube cavity of an upright post sleeve (37) on an arch rib (1), the space position of the support upright post (26) is controlled through an upright post position-correcting bolt (33), a support arc plate (39) at the bottom end of an upright post outer die (38) is firmly connected with the arch rib (1) through a template stirrup (40), and then the pouring construction of concrete (60) at the side of the post is carried out.
2. The construction method of a steel pipe concrete arch bridge installation system according to claim 1, wherein: and 2), adopting a steel plate or a concrete precast slab as the pier inner bearing plate (3).
3. The construction method of a steel pipe concrete arch bridge installation system according to claim 1, wherein: step 3), rolling the arch springing sleeve (4) and the arch rib (1) by adopting a steel pipe; the curvature of the arch springing sleeve (4) is the same as that of the arch rib (1), and the inner diameter of the arch springing sleeve (4) is the same as the outer diameter of the arch rib (1); and an intercostal tie rod (2) is arranged between the arch ribs (1).
4. The construction method of a steel pipe concrete arch bridge installation system according to claim 1, wherein: step 4), the upper supporting plate (7), the lower supporting plate (8) and the adjustable supporting plate (13) are all formed by rolling steel plates, and the curvature of the upper supporting plate, the lower supporting plate and the adjustable supporting plate is the same as that of the connected arch ribs (1); the first fixed bracing column (11) is formed by rolling a steel pipe, the first fixed bracing column (11) is connected with the lower supporting plate (8) and the first platform plate (10) in a welding manner, and a bracing column inclined brace (61) is arranged between the first fixed bracing column (11) and the lower supporting plate (8).
5. The construction method of a steel pipe concrete arch bridge installation system according to claim 1, wherein: and 4), arranging a connecting slot (62) at the empty edge of the first platform plate (10), arranging a connecting slot (62) at the empty edge of the second platform plate (83), arranging a second fixed support column (21) on the second platform plate (83), connecting the connecting slot (62) with a platform guardrail (63), and arranging a guardrail connecting rod (64) between the platform guardrail (63) and the adjacent first fixed support column (11) or the adjustable support column (12) or the second fixed support column (21).
6. The construction method of a steel pipe concrete arch bridge installation system according to claim 1, wherein: step 5), the cross sections of the arch foot bottom die (46) and the arch foot top die (47) are semicircular, template ear plates (41) are arranged on the arch foot bottom die (46) and the arch foot top die (47), a bottom die airtight plate (53) and a top die airtight plate (54) are arranged at the joint of the template ear plates (41) of the arch foot bottom die (46) and the arch foot top die (47), and the airtightness of the arch foot bottom die (46) and the arch foot top die (47) is controlled through a template fastening bolt (57); a bottom die supporting plate (52) and a top die hanging plate (49) are respectively arranged on the arch foot bottom die (46) and the arch foot top die (47), and the arch foot bottom die (46) and the bottom die supporting plate (52) and the arch foot top die (47) and the top die hanging plate (49) are firmly connected through template studs (69); the bottom die supporting plate (52) and the top die hanging plate (49) are respectively provided with a connecting sleeve (50); the cross sections of the second hanging plate (27) and the first hanging plate (28) are arc-shaped, and hanging plate ear plates (30) connected with the hanging plate connecting bolts (31) are arranged on the second hanging plate and the first hanging plate; the first support body (42), the second support body (44), the third support body (58) and the fourth support body (59) comprise support body screw rods (70), support body bolts (71) and support body pressing plates (72), wherein the fastening directions of the support body screw rods (70) connected with the two sides of the support body bolts (71) are opposite, rod end rotating hinges (73) are arranged at the end parts of the support body screw rods (70) connected with the two sides of the support body bolts (71), and the support body pressing plates (72) are connected with the support body screw rods (70) through the rod end rotating hinges (73); a support body pressure plate (72) at one end of the fourth support body (59) is connected with the top die sealing plate (54), a rod end rotating hinge (73) at the other end is connected with a pier top supporting plate (74), and a supporting anchor bar (75) is arranged between the pier top supporting plate (74) and the arch pier (5); the cross sections of the upper support frame (45) and the lower support frame (43) are L-shaped, the upper support frame (45) and the lower support frame (43) are respectively provided with a suspension upright rod (48) and a support upright rod (51), and the lengths of the suspension upright rod (48) and the support upright rod (51) are controlled by an upright rod adjusting bolt (56); end mould (55) meet perpendicularly with hunch foot die block (46) and hunch foot top mould (47), template airtight layer (65) include die block airtight plate (53) and top mould airtight plate (54), die block airtight plate (53) and hunch foot die block (46), top mould airtight plate (54) all are connected through pasting with hunch foot top mould (47), and die block airtight plate (53) and top mould airtight plate (54) adopt the rubber slab cutting to form.
7. The construction method of a steel pipe concrete arch bridge installation system according to claim 1, wherein: step 6), rolling the upper backing plate (16) and the lower backing plate (17) by adopting steel plates, wherein the longitudinal curvature of the upper backing plate (16) and the lower backing plate (17) is the same as that of the connected arch rib (1), and the upper backing plate (16) and the lower backing plate (17) are transversely tightly attached and connected with the arch rib (1); two vertical plates of the hoop plate (18) are respectively provided with a position control transverse plate (76), the position control transverse plates (76) are vertically welded with the vertical plates of the hoop plate (18), and a hoop plate position control bolt (20) is arranged between the position control transverse plates (76) which are opposite in mirror image; the cross section of the hoop cover plate (19) is L-shaped, a cover plate rotating shaft (77) is arranged at the joint of one side of the hoop cover plate (19) and the hoop plate (18), and the other side of the hoop cover plate (19) is connected with the hoop plate (18) through a cover plate stud (78); the cross brace (25) is formed by rolling steel pipes or section steel and is arranged between two rows of arch ribs (1) which are longitudinally parallel to each other.
8. The construction method of a steel pipe concrete arch bridge installation system according to claim 1, wherein: step 7), rolling the upright post sleeve (37) by adopting a steel plate, wherein 2-4 guide connecting grooves (79) are annularly arranged on the inner side wall of the upright post sleeve, and 1-2 guide connecting grooves (79) are arranged along the height direction of the upright post sleeve (37); the supporting upright column (26) is formed by rolling a steel pipe, and a guide connecting plate (80) connected with a guide connecting groove (79) is arranged on the outer side wall of the supporting upright column; the cross sections of the first hanging plate (28) and the second hanging plate (27) are semicircular, hanging plate ear plates (30) are arranged on the first hanging plate and the second hanging plate, and the longitudinal curvature of the first hanging plate (28) and the second hanging plate (27) is the same as that of the connected arch rib (1); the upright post outer mold (38) comprises two semicircular outer mold vertical plates (81), an outer mold sealing layer (67) is arranged at the joint of the outer mold ear plates (68) of the two opposite outer mold vertical plates (81), and the tightness of the upright post outer mold (38) is controlled through outer mold fastening bolts (66).
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| CN112323636B (en) * | 2020-10-29 | 2022-05-13 | 中铁一局集团有限公司 | Arch rib support for assembling construction of large-span steel pipe arch bridge |
| CN115162721B (en) * | 2022-08-19 | 2023-12-22 | 华神建设集团有限公司 | Construction method of large cantilever double-layer cast-in-situ concrete beam slab |
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