CN111455805A - Fabricated steel bridge and construction method thereof - Google Patents
Fabricated steel bridge and construction method thereof Download PDFInfo
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- CN111455805A CN111455805A CN202010364604.XA CN202010364604A CN111455805A CN 111455805 A CN111455805 A CN 111455805A CN 202010364604 A CN202010364604 A CN 202010364604A CN 111455805 A CN111455805 A CN 111455805A
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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
- E01D1/00—Bridges in general
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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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Abstract
The invention belongs to the technical field of steel bridges, and particularly relates to an assembled steel bridge and a construction method thereof, which comprises a mounting base, a supporting frame, an I-shaped beam and a bridge deck, wherein the top of the mounting base is fixedly connected with the supporting frame, the top of the supporting frame is fixedly connected with the I-shaped beam in linear arrangement, and the supporting frame is decompressed by arranging a L-shaped fixing plate, a L-shaped supporting plate, a cross-shaped supporting plate, a positioning groove, a mounting plate, a T-shaped sliding rail, a sliding block, a trapezoidal pin and a groove block, so that two sides of the integral structure of the I-shaped beam and the bridge deck are supported, the problem that the supporting frame bears large supporting force on the whole of the I-shaped beam and the bridge deck in the prior art is solved, the supporting frame is decompressed, and during maintenance, the supporting structures on two sides of the bridge deck can be maintained, the supporting frame on the inner side does not need to be disassembled and replaced.
Description
Technical Field
The invention belongs to the technical field of steel bridges, and particularly relates to an assembled steel bridge and a construction method thereof.
Background
The assembled steel bridge is generally suitable for emergency emergencies, so the bridge is required to be light in structure, strong in maneuverability, convenient to transport, fast to assemble and strong in adaptability, can be widely used in rush repairs and peaceful time flood control and disaster relief recovery traffic in wartime, and can also be used for fast construction of highway bridges and temporary highway temporary bridges and highway construction auxiliary equipment.
Some technical schemes of assembled steel bridges also appear in the prior art, for example, a chinese patent with application number 201410820484.4 discloses an assembled steel bridge, which comprises a supporting frame, a bridge deck, an i-beam, a bridge deck connecting member and an i-beam locking mechanism; the bridge deck is characterized in that the supporting frame is provided with an I-shaped beam, the extension direction of the I-shaped beam is perpendicular to the extension direction of the supporting frame, the supporting frame supports the I-shaped beam, a bridge deck is laid above the I-shaped beam, the supporting frame and the I-shaped beam are fixedly installed through an I-shaped beam locking mechanism, and the I-shaped beam and the bridge deck are fixedly installed through a bridge deck connecting piece.
The supporting force of the bridge deck on the assembled steel bridge beam completely depends on the supporting frame to support in the prior art, the requirement on the compressive property of the supporting frame is very high, and therefore the stability of the supporting frame determines the service life of the steel bridge, but the structure for better reducing the pressure of the supporting frame is not available in the prior art, the loss of the supporting frame is reduced by maintaining other structures, the supporting frame needs to be replaced for maintenance, the disassembly and the replacement are troublesome, and the difficulty is increased for prolonging the service life of the steel bridge.
Disclosure of Invention
In order to make up for the defects of the prior art and solve the problems that in the prior art, the supporting force of a bridge deck on an assembly type steel bridge is supported by a supporting frame completely and the requirement on the compression resistance of the supporting frame is very high, so that the stability of the supporting frame determines the service life of the steel bridge, but in the prior art, a structure for reducing the pressure of the supporting frame well is not provided, the loss of the supporting frame is not reduced conveniently by maintaining other structures, the supporting frame needs to be replaced for maintenance, and the assembly, disassembly and replacement are troublesome, so that the difficulty is increased for prolonging the service life of the steel bridge, the assembly type steel bridge and the construction method thereof are provided by the invention.
The technical scheme includes that the assembly type steel bridge comprises a mounting base, a supporting frame, an I-shaped beam and a bridge deck, wherein the top of the mounting base is fixedly connected with the supporting frame, the top of the supporting frame is fixedly connected with the I-shaped beam in linear arrangement, the top of the I-shaped beam is fixedly connected with the bridge deck, two sides of the I-shaped beam and the bridge deck are fixedly connected with L-shaped fixing plates, the bottom of the mounting base is fixedly connected with two groups of tubular piles which are in linear arrangement and symmetrical to each other, the surface of each tubular pile is fixedly connected with a connecting seat, the surface of the connecting seat is connected with a L-shaped supporting plate through a connecting mechanism, the top of a L-shaped supporting plate is in contact with the bottom of the mounting base, the top of a L-shaped supporting plate is fixedly connected with a cross-shaped supporting plate, the side of the mounting base is provided with a positioning groove corresponding to the position of a cross-shaped supporting plate, the surface of the cross-shaped supporting plate is in sliding connection with the inner wall of the positioning groove, bumps on two sides of the cross-shaped supporting plate are lapped on the top of the mounting base, the mounting plate is connected with a mounting plate, the mounting plate is connected with a mounting plate through a T-shaped supporting plate, the mounting plate is connected with a screw, the mounting plate is connected with a mounting plate, the mounting plate is connected with a transverse-shaped supporting plate, the mounting plate, the.
Preferably, the connecting mechanism comprises two U-shaped mounting frames, the two U-shaped mounting frames are fixedly connected to two sides of the connecting seat respectively, a first connecting hole is formed in the top of each U-shaped mounting frame and penetrates through the bottom of the corresponding U-shaped mounting frame, a connecting plate is connected to the inner wall of each U-shaped mounting frame in a sliding mode and is fixedly connected to the side face of the L-shaped supporting plate, two penetrating second connecting holes are formed in the top of each connecting plate and are matched with the first connecting holes, fixing bolts are inserted into the inner walls of the second connecting holes and the second connecting holes together, when the connecting mechanism works, the connecting plates are connected to the inner walls of the second connecting holes and the second connecting holes through the fixing bolts in an inserting mode, the effect that the connecting plates are fixedly connected to the inner walls of the U-shaped mounting frames is achieved, accordingly, the L-shaped supporting plates are indirectly and fixedly connected to the surfaces of the connecting seat, when the connecting mechanism needs to be detached, the U-shaped mounting frames and the connecting plates can be detached only by taking down the fixing bolts, and accordingly the connecting plates and the U-shaped.
Preferably, the number of the first connecting holes is four, the four first connecting holes are linearly arranged, the number of the second connecting holes is two, the two second connecting holes are linearly arranged, the positions of the two second connecting holes are matched with the positions of the two spaced first connecting holes, when the U-shaped mounting frame works, the fixing bolts are removed, when the positions of the connecting plates on the inner wall of the U-shaped mounting frame need to be adjusted, the two second connecting holes on the connecting plates can be adjusted to the positions of the other two spaced first connecting holes, then the fixing bolts are inserted, so that the positions of the connecting plates on the inner wall of the U-shaped mounting frame can be adjusted, the outward position of the L-shaped supporting plate can be adjusted, the width between the two L-shaped supporting plates can be properly adjusted, the distance between the two mounting plates can be indirectly adjusted, the adjustment can be performed according to slight change of the width of the bridge deck plate, and the problem that the fixing plates on two sides of the bridge deck L-shaped fixing.
Preferably, one side of the sliding block, which is far away from the driving screw rod, is fixedly connected with a positioning sliding sleeve; a positioning screw is connected to the inner wall of the positioning sliding sleeve in a threaded manner; the end part of the inner side of the positioning screw rod is fixedly connected to the side surface of the mounting plate; the surface of the positioning screw rod is in threaded connection with a positioning threaded sleeve; during operation, after the slider drives trapezoidal round pin and recess piece sliding connection, screw up the location swivel nut for the location swivel nut removes on positioning screw's surface, until compressing tightly the location sliding sleeve, makes the location sliding sleeve carry out spacing support to the slider in step, indirectly makes the trapezoidal round pin support with being connected of recess piece, reaches the effect of carrying out spacing support to trapezoidal round pin.
Preferably, the position of the edge of the top of the mounting plate is fixedly connected with a traction plate, the top and the bottom of the inner side of the traction plate are fixedly connected with supporting pulleys, the side face of the trapezoidal pin is fixedly connected with a traction rope, the traction rope sequentially penetrates through the two supporting pulleys, one end, far away from the trapezoidal pin, of the traction rope is fixedly connected to the top of the L-shaped fixing plate, when the traction rope works, the supporting pulleys support the traction track of the traction rope, when the trapezoidal pin is in sliding connection with the groove block, the trapezoidal pin synchronously drives the traction rope to be tightened, the traction rope plays a role in drawing the L-shaped fixing plate, far away from the end, of the traction rope, so that the two sides of the integral I-shaped beam and the bridge deck are drawn, the supporting force of the integral I-shaped beam and the integral bridge deck is borne by the supporting.
Preferably, the support pulley comprises a first pulley and a second pulley; the first pulley and the second pulley are arranged up and down symmetrically and are in contact with each other; the traction rope passes through the space between the first pulley and the second pulley; during operation, the relative setting of first pulley and second pulley can be spacing the haulage rope in the intermediate position, avoids the haulage rope to break away from the problem of supporting the pulley at the traction in-process.
A building method of an assembly type steel bridge comprises the following steps:
s1, firstly, driving pipe piles into the ground to form two groups of linearly arranged pipe piles, welding columnar steel between the pipe piles in one group side by side, welding connecting seats on the surfaces of the pipe piles, and welding connecting frames on the inner sides of two opposite connecting seats between the two groups; by arranging the columnar steel and the columnar steel, the tubular piles are supported with each other integrally, the structure is more stable, and the supporting capacity of the tubular piles is improved;
s2, the pipe pile is used as a supporting upright post, a mounting base is erected at the top of the pipe pile, T-shaped steel is selected as a material of the mounting base, the mounting base and the pipe pile are fixedly mounted, then two groups of supporting frames are erected at the top of the mounting base, the supporting frames are erected by Bailey pieces, the tops of the two groups of supporting frames are connected with I-beams through bolt threads, the I-beams are linearly arranged, the tops of the linearly arranged I-beams are connected with a bridge deck through the bolt threads, and then L-shaped fixing plates are fixedly mounted on two sides of the I-beams and the bridge deck together;
s3, a L-shaped supporting plate is detachably connected to the surface of the connecting seat through a connecting mechanism, an installing plate is welded to the top of the L-shaped supporting plate, a T-shaped sliding rail, a sliding block, a trapezoidal pin, a driving screw rod, a driving threaded sleeve and other structures which are connected in advance are connected to the installing plate, the driving threaded sleeve is screwed, the sliding block is driven to move by the driving threaded sleeve under the action of external threads of the driving screw rod, the sliding block synchronously drives the trapezoidal pin to be connected to the inner wall of a groove block at the bottom of the L-shaped fixing plate in a sliding mode, so that the installing plate and the L-shaped supporting plate are integrally connected to support the bottom of the L-shaped fixing plate, the installing plate and the L-shaped fixing plate are connected together through the sliding connection of the trapezoidal pin and the groove block, the installing plate supports the L;
s4, welding a traction plate on the top of the mounting plate, fixedly mounting two supporting pulleys on the inner side of the traction plate, connecting a traction rope on the two supporting pulleys in a sliding manner, fixedly mounting two ends of the traction rope on the side face of the trapezoidal pin and the top of the L-shaped fixing plate respectively, and drawing the L-shaped fixing plate, wherein the traction of the traction rope plays a role in drawing the whole I-shaped beam and the bridge deck plate on the inner side of the L-shaped fixing plate, and the supporting force borne by the supporting frame is reduced.
The invention has the following beneficial effects:
1. according to the assembled steel bridge and the construction method thereof, the L-shaped fixing plate, the L-shaped supporting plate, the cross-shaped supporting plate, the positioning groove, the mounting plate, the T-shaped sliding rail, the sliding block, the trapezoidal pin and the groove block are arranged, so that the two sides of the integral structure of the I-shaped beam and the bridge deck are supported, the problem that the supporting frame bears large supporting force on the whole I-shaped beam and the bridge deck in the prior art is solved, the supporting frame is decompressed, the supporting structures on the two sides of the bridge deck are maintained during maintenance, the supporting frame on the inner side does not need to be disassembled and assembled and replaced, convenience is provided for maintaining the steel bridge, and the difficulty is reduced for prolonging the service life of the steel bridge.
2. According to the assembled steel bridge and the construction method thereof, the traction plate, the support pulley, the first pulley, the second pulley and the traction rope are arranged, when the trapezoidal pin is in sliding connection with the groove block, the trapezoidal pin synchronously drives the traction rope to be tightened, the L-shaped fixing plate far away from one end of the trapezoidal pin with the traction rope is pulled, so that the two sides of the integral I-shaped beam and the bridge deck are pulled, the supporting force of the integral I-shaped beam and the bridge deck borne by the support frame is reduced, and the loss of the support frame is reduced.
Drawings
The invention will be further explained with reference to the drawings.
FIG. 1 is a flow chart of a preparation method of the present invention;
FIG. 2 is a first perspective view of the present invention;
FIG. 3 is a schematic structural view of the present invention;
FIG. 4 is an enlarged view of a portion A of FIG. 3;
FIG. 5 is an exploded view of the U-shaped mounting bracket and anchor bolt connection of the present invention;
FIG. 6 is a first perspective view of the L shaped support plates, cross shaped support plates, positioning slots and mounting plates of the present invention;
FIG. 7 is a second perspective view of the L shaped support plates, cross shaped support plates, detents, and mounting plate of the present invention;
FIG. 8 is a perspective view of an L-shaped retainer plate of the present invention;
in the figure, a mounting base 1, a supporting frame 2, an I-beam 3, a bridge deck 4, an L-shaped fixing plate 5, a tubular pile 6, columnar steel 601, a connecting frame 602, a connecting seat 7, a connecting mechanism 8, a U-shaped mounting rack 801, a first connecting hole 802, a connecting plate 803, a second connecting hole 804, a fixing bolt 805, a L-shaped supporting plate 9, a cross-shaped supporting plate 10, a positioning groove 11, a mounting plate 12, a T-shaped sliding rail 13, a sliding block 14, a trapezoidal pin 15, a groove block 16, a driving threaded sleeve 17, a driving screw 18, a positioning sliding sleeve 19, a positioning screw 20, a positioning threaded sleeve 21, a traction plate 22, a supporting pulley 23, a first pulley 231, a second pulley 232 and a traction rope 24 are arranged.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in figures 1 to 8, the assembled steel bridge comprises a mounting base 1, a supporting frame 2, an I-beam 3 and a bridge deck 4, wherein the top of the mounting base 1 is fixedly connected with the supporting frame 2, the top of the supporting frame 2 is fixedly connected with the I-beam 3 in linear arrangement, the top of the I-beam 3 is fixedly connected with the bridge deck 4, the two sides of the I-beam 3 and the bridge deck 4 are fixedly connected with L-shaped fixing plates 5 together, the bottom of the mounting base 1 is fixedly connected with two sets of tubular piles 6 in linear arrangement and symmetrical to each other, the surface of the mounting base 6 is fixedly connected with a connecting seat 7, the surface of the connecting seat 7 is connected with a L-shaped supporting plate 9 through a connecting mechanism 8, the top of the L-shaped supporting plate 9 is in mutual contact with the bottom of the mounting base 1, the top of the 350-shaped supporting plate 9 is fixedly connected with a cross-shaped supporting plate 10, the side of the mounting base 1-shaped supporting plate 9, the side of the mounting base 1-shaped supporting plate 10 is provided with a positioning groove 11 corresponding to the cross-shaped supporting plate 10, the side of the mounting base 10, the cross-shaped supporting plate 10 is connected with a trapezoidal supporting plate 11 through a trapezoidal-shaped supporting plate 14, the supporting plate 14 is connected with a trapezoidal-shaped supporting plate 14, the supporting plate 14 is connected with a trapezoidal supporting plate 14, the supporting plate 14 is connected with a T-shaped supporting plate 14, the supporting plate 14 is connected with a cross-shaped supporting plate 14, the sliding block 14 is connected with a cross-shaped sliding block 14, the sliding block 14 is connected with a cross-shaped sliding block 14, the sliding block 14 is connected with a sliding block 14, the sliding block 14 is connected with the sliding block 14, the sliding block 14 of the sliding block 14, the sliding block 14 is connected with the sliding block 14, the sliding.
As an embodiment of the invention, the connecting mechanism 8 comprises two U-shaped mounting racks 801, the two U-shaped mounting racks 801 are fixedly connected to two sides of the connecting seat 7 respectively, a first connecting hole 802 is formed in the top of each U-shaped mounting rack 801, the first connecting hole 802 penetrates through the bottom of each U-shaped mounting rack 801, a connecting plate 803 is connected to the inner wall of each U-shaped mounting rack 801 in a sliding mode, the connecting plate 803 is fixedly connected to the side face of the L-shaped supporting plate 9, two second connecting holes 804 penetrating through the top of the connecting plate 803 are formed, the two second connecting holes 804 are matched with the first connecting holes 802, fixing bolts 805 are inserted into the inner walls of the second connecting holes 804 and the second connecting holes 804 together, when the connecting mechanism works, the fixing bolts 805 are inserted into the inner walls of the second connecting holes 804 and the second connecting holes 804, the effect of fixedly connecting plates 803 to the inner walls of the U-shaped mounting racks 801 is achieved, and therefore, when the mounting racks are required to be disassembled, the fixing bolts 805 and the connecting plates 9 can be removed, the connecting plate 803 and the connecting rack 801 can be conveniently separated from the connecting seat 637, and the connecting seat 35 can be conveniently disassembled.
According to an embodiment of the invention, the number of the first connecting holes 802 is four, the four first connecting holes 802 are linearly arranged, the number of the second connecting holes 804 is two, the two second connecting holes 804 are linearly arranged, the positions of the two second connecting holes 804 are matched with the positions of the two spaced first connecting holes 802, when the fixing bolts 805 are removed and the positions of the connecting plates 803 on the inner wall of the U-shaped mounting rack 801 need to be adjusted, the two second connecting holes 804 on the connecting plates 803 can be adjusted to the positions of the other two spaced first connecting holes 801, and then the fixing bolts 805 are inserted, so that the position of the connecting plates 803 on the inner wall of the U-shaped mounting rack 801 can be adjusted, the outward positions of the L-shaped supporting plates 9 can be adjusted, the width between the two L-shaped supporting plates 9 can be adjusted indirectly, the distance between the two mounting plates 12 can be adjusted indirectly according to the width of the bridge deck 4, and the problem that the fixing plates L-shaped fixing plates 5 on two sides of the bridge deck 4 cannot be aligned and fixed in a slightly changed can be avoided.
As an embodiment of the present invention, a positioning sliding sleeve 19 is fixedly connected to a side of the sliding block 14 away from the driving screw 18; the inner wall of the positioning sliding sleeve 19 is in threaded connection with a positioning screw rod 20; the end part of the inner side of the positioning screw rod 20 is fixedly connected to the side surface of the mounting plate 12; the surface of the positioning screw rod 20 is in threaded connection with a positioning threaded sleeve 21; during operation, after the slider 14 drives the trapezoidal pin 15 and the groove block 16 to be connected in a sliding manner, the positioning threaded sleeve 21 is screwed down, so that the positioning threaded sleeve 21 moves on the surface of the positioning screw rod 20 until the positioning sliding sleeve 19 is compressed, the positioning sliding sleeve 19 synchronously carries out limiting support on the slider 14, the trapezoidal pin 15 and the groove block 16 are indirectly connected to be supported, and the effect of limiting support on the trapezoidal pin 15 is achieved.
As an embodiment of the invention, the top edge of the mounting plate 12 is fixedly connected with a traction plate 22, the top and the bottom of the inner side of the traction plate 22 are fixedly connected with supporting pulleys 23, the side surface of the trapezoid pin 15 is fixedly connected with a traction rope 24, the traction rope 24 sequentially passes through the two supporting pulleys 23, one end, far away from the trapezoid pin 15, of the traction rope 24 is fixedly connected to the top of the L-shaped fixing plate 5, during operation, the supporting pulleys 23 support the traction track of the traction rope 24, when the trapezoid pin 15 is in sliding connection with the groove block 16, the trapezoid pin 15 synchronously drives the traction rope 24 to be tightened, so that the traction effect on the L-shaped fixing plate 5, far away from the trapezoid pin 15, of the traction rope 24 is achieved, the traction on two sides of the integral I-shaped beam 3 and the bridge deck 4 is achieved, the supporting force of the integral I-shaped beam 3 and the bridge deck 4 is borne by the supporting frame 2 to be reduced, and the loss of the.
As an embodiment of the present invention, the supporting pulley 23 includes a first pulley 231 and a second pulley 232; the first pulley 231 and the second pulley 232 are symmetrically arranged up and down and are in contact with each other; the traction rope 24 passes between a first pulley 231 and a second pulley 232; during operation, the relative setting of first pulley 231 and second pulley 232 can be spacing in the intermediate position with haulage rope 24, avoids haulage rope 24 to break away from the problem of supporting pulley 23 at the traction in-process.
A building method of an assembly type steel bridge comprises the following steps:
s1, firstly, driving pipe piles 6 into the ground to form two groups of linearly arranged pipe piles 6, welding columnar steel 601 between the pipe piles 6 in one group side by side, welding connecting seats 7 on the surfaces of the pipe piles 6, and welding upper connecting frames 602 on the inner sides of two opposite connecting seats 7 in the two groups together; by arranging the columnar steel 601 and the columnar steel 601, the tubular piles 6 are supported with each other integrally, the structure is more stable, and the supporting capacity of the tubular piles 6 is improved;
s2, the tubular pile 6 serves as a supporting upright post, a mounting base 1 is erected at the top of the tubular pile 6, the mounting base 1 is made of T-shaped steel, the mounting base 1 and the tubular pile 6 are fixedly mounted, then two groups of supporting frames 2 are erected at the top of the mounting base 1, the supporting frames 2 are erected by Bailey sheets, the tops of the two groups of supporting frames 2 are connected with I-beams 3 through bolt threads, the I-beams 3 are linearly arranged, the tops of the I-beams 3 which are linearly arranged are connected with a bridge deck 4 through bolt threads, and then L-shaped fixing plates 5 are fixedly mounted on two sides of the I-beams 3 and the bridge deck 4 together;
s3, a L-shaped support plate 9 is detachably connected to the surface of a connecting seat 7 through a connecting mechanism 8, an upper mounting plate 12 is welded to the top of the L-shaped support plate 9, a T-shaped sliding rail 13, a sliding block 14, a trapezoidal pin 15, a driving screw 18, a driving threaded sleeve 17 and other structures which are connected in advance are connected to the mounting plate 12, the driving screw 18 is screwed, the driving threaded sleeve 17 drives the sliding block 14 to move under the action of external threads of the driving screw 18, the sliding block 14 synchronously drives the trapezoidal pin 15 to be connected to the inner wall of a groove block 16 at the bottom of the L-shaped fixed plate 5 in a sliding mode, so that the mounting plate 12 supports the L-shaped fixed plate 5, the bottom of the L-shaped fixed plate 5 is supported by the integral structure of the mounting plate 12 and the L-shaped support plate 9, the mounting plate 12 is connected with the L-shaped fixed plate 5 in a sliding mode through the trapezoidal pin 15 and the groove block 16;
s4, welding a traction plate 22 on the top of the mounting plate 12, fixedly mounting two support pulleys 23 on the inner side of the traction plate 22, connecting a traction rope 24 on the two support pulleys 23 in a sliding manner, fixedly mounting two ends of the traction rope 24 on the side surface of the trapezoidal pin 15 and the top of the L-shaped fixing plate 5 respectively, and drawing the L-shaped fixing plate 5, wherein the traction of the traction rope 24 plays a role in drawing the whole I-shaped beam 3 and the bridge deck 4 on the inner side of the L-shaped fixing plate 5, and the supporting force borne by the supporting frame 2 is reduced.
The specific work flow is as follows:
in operation, under the support of the connecting seat 7 on the surface of the tubular pile 6, the connecting seat 7 supports the cross-shaped supporting plate 10 through the L-shaped supporting plate 9, the cross-shaped supporting plate 10 is connected with the inner wall of the positioning groove 11 in a sliding manner, so that the convex blocks on two sides of the cross-shaped supporting plate 10 are lapped at the top of the mounting base 1, the cross-shaped supporting plate 10 is synchronously supported by the L-shaped supporting plate 9 and the mounting base 1, the top of the cross-shaped supporting plate 10 is connected with the sliding blocks 14 and the T-shaped sliding rails 13 in a sliding manner, the trapezoidal pin 15 is connected with the top of the mounting plate 12 in a sliding manner, the driving threaded sleeve 17 is connected to two sides of the sliding block 14 in a rotating manner, the driving threaded sleeve 18 is connected to the side of the mounting plate 12 in a rotating manner, the external threads on the surface of the driving threaded sleeve 17 can drive the sliding sleeve 14 to move in a synchronous manner, the sliding manner that the trapezoidal pin 15 is synchronously connected with the inner wall of the groove block 16 at the bottom of the L-shaped fixing plate 5, the trapezoidal pin 15 and the groove block 16 are detachably connected, the trapezoidal pin 15 can be connected, the detachable connection of the trapezoidal pin 15 and the groove block 16, the mounting plate can be used for realizing the support of the L-shaped fixing plate 5, thereby realizing the support of the bridge 3, the integral supporting plate, the bridge 4, the integral supporting plate, the bridge supporting plate can be maintained, the bridge supporting plate, the supporting plate 2, the supporting plate can be maintained, the bridge supporting plate 2, the bridge supporting plate can be maintained, the bridge.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. The assembled steel bridge comprises a mounting base (1), a supporting frame (2), an I-beam (3) and a bridge deck (4), and is characterized in that the top of the mounting base (1) is fixedly connected with the supporting frame (2), the top of the supporting frame (2) is fixedly connected with the I-beam (3) in linear arrangement, the top of the I-beam (3) is fixedly connected with the bridge deck (4), two sides of the I-beam (3) and the bridge deck (4) are fixedly connected with L-shaped fixing plates (5), the bottom of the mounting base (1) is fixedly connected with two groups of tubular piles (6) in linear arrangement and symmetrical to each other, the surface of each tubular pile (6) is fixedly connected with a connecting seat (7), the surface of the connecting seat (7) is connected with a L-shaped supporting plate (9) through a connecting mechanism (8), the top of the 32-shaped supporting plate (9) is in mutual contact with the bottom of the mounting base (1), the top of the L-shaped supporting plate (9) is fixedly connected with a cross-shaped supporting plate (10), the side of the mounting base (1) is fixedly connected with a cross-shaped sliding block (16), the mounting plate (11) is connected with a sliding block (539) and a sliding block (16), the mounting plate (539-shaped sliding block-driving screw block-shaped driving screw block (17) is connected with a sliding block-driving screw-pin-driving screw-pin-shaped mounting plate (17), the inner wall-pin-shaped mounting plate (17) on the inner wall-pin-shaped mounting plate (10), the inner wall-shaped mounting plate (10), the inner-shaped mounting plate (17) of the sliding-shaped mounting plate (10), the sliding-pin-shaped sliding-screw-.
2. The assembled steel bridge according to claim 1, wherein the connecting mechanism (8) comprises two U-shaped mounting frames (801), the two U-shaped mounting frames (801) are fixedly connected to two sides of the connecting seat (7) respectively, a first connecting hole (802) is formed in the top of each U-shaped mounting frame (801), the first connecting hole (802) penetrates through the bottom of each U-shaped mounting frame (801), a connecting plate (803) is connected to the inner wall of each U-shaped mounting frame (801) in a sliding mode, the connecting plate (803) is fixedly connected to the side face of the L-shaped supporting plate (9), two penetrating second connecting holes (804) are formed in the top of the connecting plate (803), the two second connecting holes (804) are matched with the first connecting holes (802), and fixing bolts (805) are inserted into the inner walls of the second connecting holes (804) in a common mode.
3. The fabricated steel bridge of claim 2, wherein: the number of the first connecting holes (802) is four; and four of the first connection holes (802) are arranged linearly; the number of the second connecting holes (804) is two; and the two second connecting holes (804) are linearly arranged; the positions of the two second connecting holes (804) are matched with the positions of the two first connecting holes (802) at intervals.
4. The fabricated steel bridge of claim 1, wherein: one side of the sliding block (14) far away from the driving screw (18) is fixedly connected with a positioning sliding sleeve (19); a positioning screw rod (20) is connected to the inner wall of the positioning sliding sleeve (19) in a threaded manner; the end part of the inner side of the positioning screw rod (20) is fixedly connected to the side surface of the mounting plate (12); the surface of the positioning screw rod (20) is in threaded connection with a positioning threaded sleeve (21).
5. The assembled steel bridge girder according to claim 1, wherein a traction plate (22) is fixedly connected to the top edge of the mounting plate (12), supporting pulleys (23) are fixedly connected to the top and the bottom of the inner side of the traction plate (22), a traction rope (24) is fixedly connected to the side surface of the trapezoidal pin (15), the traction rope (24) sequentially passes through the two supporting pulleys (23), and one end, far away from the trapezoidal pin (15), of the traction rope (24) is fixedly connected to the top of the L-shaped fixing plate (5).
6. The fabricated steel bridge of claim 5, wherein: the supporting pulley (23) comprises a first pulley (231) and a second pulley (232); the first pulley (231) and the second pulley (232) are arranged up and down symmetrically and are in contact with each other; the traction rope (24) passes between the first pulley (231) and the second pulley (232).
7. A construction method of an assembly type steel bridge is characterized in that: an assembled steel bridge suitable for use in claims 1-6, comprising the steps of:
s1, firstly, driving pipe piles (6) into the ground to form two groups of linearly arranged pipe piles (6), welding columnar steel (601) between the pipe piles (6) in one group side by side, welding connecting seats (7) on the surfaces of the pipe piles (6), and welding connecting frames (602) on the inner sides of two opposite connecting seats (7) in the two groups together;
s2, the pipe pile (6) serves as a supporting upright post, a mounting base (1) is erected at the top of the pipe pile (6), T-shaped steel is selected as a material of the mounting base (1), the mounting base (1) and the pipe pile (6) are fixedly mounted, then two groups of supporting frames (2) are erected at the top of the mounting base (1), the supporting frames (2) are erected by Bailey sheets, the tops of the two groups of supporting frames (2) are connected with I-beams (3) through bolt threads, the I-beams (3) are arranged linearly, the tops of the I-beams (3) arranged linearly are connected with a bridge deck (4) through bolt threads, and then L-shaped fixing plates (5) are fixedly mounted on two sides of the I-beams (3) and the bridge deck (4) together;
s3, detachably connecting a L-shaped supporting plate (9) on the surface of a connecting seat (7) through a connecting mechanism (8), welding an upper mounting plate (12) on the top of the L-shaped supporting plate (9), connecting a T-shaped sliding rail (13) which is connected in advance on the mounting plate (12), a sliding block (14), a trapezoidal pin (15), a driving screw (18), a driving threaded sleeve (17) and other structures, screwing the driving screw (18), driving the threaded sleeve (17) to drive the sliding block (14) to move under the action of external threads of the driving screw (18), and synchronously driving the trapezoidal pin (15) to be connected to the inner wall of a groove block (16) at the bottom of a L-shaped fixing plate (5) by the sliding block (14), so that the integral structure of the mounting plate (12) and the L-shaped supporting plate (9) supports the bottom of the L-shaped fixing plate (5);
s4, welding an upper traction plate (22) on the top of the mounting plate (12), fixedly mounting two supporting pulleys (23) on the inner side of the upper traction plate (22), connecting an upper traction rope (24) on the two supporting pulleys (23) in a sliding manner, fixedly mounting two ends of the traction rope (24) on the side face of the trapezoidal pin (15) and the top of the L-shaped fixing plate (5) respectively, and drawing the L-shaped fixing plate (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010364604.XA CN111455805A (en) | 2020-04-30 | 2020-04-30 | Fabricated steel bridge and construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010364604.XA CN111455805A (en) | 2020-04-30 | 2020-04-30 | Fabricated steel bridge and construction method thereof |
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| CN111455805A true CN111455805A (en) | 2020-07-28 |
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| CN202010364604.XA Withdrawn CN111455805A (en) | 2020-04-30 | 2020-04-30 | Fabricated steel bridge and construction method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112127288A (en) * | 2020-10-29 | 2020-12-25 | 中建八局第二建设有限公司 | Novel track-free triangular hanging basket construction method for cantilever casting beam |
| CN112227212A (en) * | 2020-10-10 | 2021-01-15 | 招商局重庆交通科研设计院有限公司 | Assembled bridge construction equipment |
| CN113863116A (en) * | 2021-10-27 | 2021-12-31 | 冯志强 | Assembled steel bridge |
-
2020
- 2020-04-30 CN CN202010364604.XA patent/CN111455805A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112227212A (en) * | 2020-10-10 | 2021-01-15 | 招商局重庆交通科研设计院有限公司 | Assembled bridge construction equipment |
| CN112127288A (en) * | 2020-10-29 | 2020-12-25 | 中建八局第二建设有限公司 | Novel track-free triangular hanging basket construction method for cantilever casting beam |
| CN113863116A (en) * | 2021-10-27 | 2021-12-31 | 冯志强 | Assembled steel bridge |
| CN113863116B (en) * | 2021-10-27 | 2023-08-25 | 湖南金格建筑科技有限公司 | Assembled steel bridge |
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