CN103266569A - Pre-assembly method of steel bridge - Google Patents
Pre-assembly method of steel bridge Download PDFInfo
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- CN103266569A CN103266569A CN201310199810XA CN201310199810A CN103266569A CN 103266569 A CN103266569 A CN 103266569A CN 201310199810X A CN201310199810X A CN 201310199810XA CN 201310199810 A CN201310199810 A CN 201310199810A CN 103266569 A CN103266569 A CN 103266569A
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Abstract
The invention relates to the technical field of manufacturing of bridges of steel structures, and discloses a pre-assembly method of a steel bridge. Components of the camber combined steel bridge are divided into a plurality of parts, and each part is hoisted and pre-assembled independently. The pre-assembly method comprises the steps of S1 of a pre-assembly method of arch ribs, vertical bars and bridge floor beam box type structures, S2 of a pre-assembly method of bridge floor beams and S3 of a pre-assembly method of the arch ribs and a cross beam. The pre-assembly method achieves simple pre-assembly of the bridge of the steel structure, steel structure components are divided into three parts pre-assembled independently, related components of each part can be pre-assembled, and therefore accurate locating of bolt holes can be decided. Compared with a traditional integral and three-dimensional assembly, the pre-assembly method reduces the labor amount of integral pre-assembly of the bridge of the steel structure, reduces dependence on large hoisting equipment, shortens an assembly period, and improves work efficiency.
Description
Technical field
The present invention relates to steel structure bridge manufacturing technology field, disclose a kind of pre-assembly method of steel bridge.
Background technology
At present, the part steel bridge adopts the camber combining form, adopts the box-shaped montant to connect between the camber, adopts box-shaped beam to connect between the arch rib, and connected mode is high-strength bolt and connects.Because in manufacture process, various piece is separately made, when the assembly unit of building site, very high to required precision because bolt connects, it is essential therefore to carry out pre-assembly unit after manufacturing is finished.
Because camber composite bridge sectional dimension is big, various piece weight is big, and three-dimensional assembly unit requires very high to crane gear, increased equipment cost; Three-dimensional assembly unit workload is big, and the cycle is long.
Summary of the invention
Technical problem to be solved by this invention provides a kind of pre-assembly method of camber combination steel bridge, and the amount of labour and the equipment cost that can reduce pre-assembly unit operation promote operating efficiency simultaneously.
For solving the problems of the technologies described above, the invention provides a kind of pre-assembly method of steel bridge: each assembly of camber combination steel bridge is divided into some parts, and the dismounting of each several part independence is pieced together in advance; Comprise: the pre-assembly method of S1. arch rib, montant and bridge floor beam box-structure; S2. the pre-assembly method of bridge floor beam; S3. the pre-assembly method of arch rib and crossbeam; May further comprise the steps:
S1. the pre-assembly method of arch rib, montant and bridge floor beam box-structure;
S1.1 draws the port locations terrestrial reference of first arch rib 1, second arch rib 2, first bridge floor beam box-structure 3, the second bridge floor beam box-structures, 4, the first montants 5 and second montant 6;
S1.2 makes the first pre-moulding bed of piecing together, the described first pre-assembly moulding bed top template leveling;
S1.3 hangs on the described first pre-moulding bed of piecing together with described first arch rib 1 and the described first bridge floor beam box-structure 3; During the location, involutory corresponding port locations terrestrial reference;
S1.4 lifts described first montant 5 the above first pre-moulding bed location of piecing together; Mate the port between described first montant 5 and described first arch rib 1 and the described first bridge floor beam box-structure 3;
S1.5 joins the bolt hole that bores described first montant 5 two ends;
S1.6. lift described second arch rib 2, the described second bridge floor beam box-structure 4 and second montant 6 according to step S1.3～S1.5 and join the bolt hole that bores described second montant 6 two ends;
S2. the pre-assembly method of bridge floor beam;
Girder 7, first was chosen the located lateral terrestrial reference that arm 8, second is chosen arm 9, the described first bridge floor beam box-structure 3 and the described second bridge floor beam box-structure 4 in the middle of S2.1 drew bridge floor beam;
S2.2 makes the second pre-moulding bed of piecing together;
S2.3 lifts the second pre-moulding bed location of piecing together on the described first bridge floor beam box-structure 3 and the described second bridge floor beam box-structure 4; During the location, the described first bridge floor beam box-structure 3 and the described second bridge floor beam box-structure, 4 involutory its located lateral terrestrial references also rigidly fix with the second pre-moulding bed of piecing together;
S2.4 lifts in the middle of the described bridge floor beam girder 7, first and chooses arm 8 and second and choose the second pre-moulding bed location of piecing together on the arm 9;
S2.5 is fixed on girder 7 in the middle of the described bridge floor beam between the described first bridge floor beam box-structure 3 and the described second bridge floor beam box-structure 4; Choosing arm 8 with described first is fixed on the described first bridge floor beam box-structure 3; Choosing arm 9 with described second is fixed on the described second bridge floor beam box-structure 4;
S2.6 measures the distance L between the described first bridge floor beam box-structure 3 and the described second bridge floor beam box-structure 4;
S3. the preassembling method of arch rib and crossbeam;
S3.1 is with among the described step S2.6, and after the pre-assembly unit of bridge floor beam, the distance L between the described first bridge floor beam box-structure 3 and the described second bridge floor beam box-structure 4 is foundation, the surplus of the described crossbeam 10 of line cutting;
S3.2 draws the port locations terrestrial reference of crossbeam 10 and the located lateral terrestrial reference of described first arch rib 1 and second arch rib 2;
S3.3 makes the 3rd pre-moulding bed of piecing together;
S3.4 is with described first arch rib 1 and second arch rib, 2 liftings the last the 3rd pre-moulding bed location of piecing together; During the location, described first arch rib 1 and second arch rib, 2 involutory its located lateral terrestrial references;
S3.5 mates the port locations terrestrial reference of described crossbeam 10, lifting crossbeam 10 the above the 3rd pre-moulding bed location of piecing together;
S3.6 joins the bolt hole that bores described crossbeam 10 two ends.
Further, among the described step S1.2, described first is pre-when piecing together the template leveling of moulding bed top, described template height error≤1mm.
Further, among described step S1.1, S2.1, the S3.2, the instrument of drawing the employing of port locations terrestrial reference and located lateral terrestrial reference is total powerstation.
Further, described each location terrestrial reference and described first pre-moulding bed, the second pre-assembly moulding bed and the 3rd pre-coordinate of piecing together moulding bed pieced together use the same coordinate system when drawing.
The pre-assembly method of camber combination steel bridge provided by the invention has been realized the succinct pre-assembly unit of steel structure bridge, steel structure assembly is divided into the independent pre-assembly unit of three parts, each part can both realize the coupling assembly unit between associated component, thereby determines the accurate location of bolt hole; Reduce the whole preframed amount of labour of steel structure bridge and reduced dependence to large lifting equipment simultaneously, shortened the assembly unit cycle, promoted operating efficiency.
Description of drawings
The camber combination steel bridge theory structure schematic diagram that Fig. 1 provides for the embodiment of the invention;
Wherein, 1-first arch rib, 2-second arch rib, the 3-first bridge floor beam box-structure, the 4-second bridge floor beam box-structure, 5-first montant, girder in the middle of 6-second montant, 7-bridge floor beam, 8-first chooses arm, and 9-second chooses arm, the 10-crossbeam.
The specific embodiment
Referring to Fig. 1, the pre-assembly method of a kind of camber combination steel bridge that the embodiment of the invention provides: each assembly of camber combination steel bridge is divided into some parts, and the dismounting of each several part independence is pieced together in advance; Comprise: the pre-assembly method of S1. arch rib, montant and bridge floor beam box-structure; S2. the pre-assembly method of bridge floor beam; S3. the pre-assembly method of arch rib and crossbeam; May further comprise the steps:
S1. the pre-assembly method of arch rib, montant and bridge floor beam box-structure;
S1.1 draws the port locations terrestrial reference of first arch rib 1, second arch rib 2, first bridge floor beam box-structure 3, the second bridge floor beam box-structures, 4, the first montants 5 and second montant 6;
S1.2 makes the first pre-moulding bed of piecing together, the first pre-assembly moulding bed top template leveling;
S1.3 hangs on the first pre-moulding bed of piecing together with first arch rib 1 and the first bridge floor beam box-structure 3; During the location, involutory corresponding port locations terrestrial reference;
S1.4 lifts the first pre-moulding bed location of piecing together on first montant 5; Mate the port between first montant 5 and first arch rib 1 and the first bridge floor beam box-structure 3;
S1.5 joins the bolt hole that bores first montant, 5 two ends;
S1.6. lift second arch rib 2, the second bridge floor beam box-structure 4 and second montant 6 and join the bolt hole that bores the second montant two ends 6 according to step S1.3～S1.5;
S2. the pre-assembly method of bridge floor beam;
Girder 7, first was chosen the located lateral terrestrial reference that arm 8, second is chosen arm 9, the first bridge floor beam box-structure 3 and the second bridge floor beam box-structure 4 in the middle of S2.1 drew bridge floor beam;
S2.2 makes the second pre-moulding bed of piecing together;
S2.3 lifts the second pre-moulding bed location of piecing together on the first bridge floor beam box-structure 3 and the second bridge floor beam box-structure 4; During the location, the first bridge floor beam box-structure 3 and the second bridge floor beam box-structure, 4 involutory its located lateral terrestrial references also rigidly fix with the second pre-moulding bed of piecing together;
Girder 7, first is chosen arm 8 and second and is chosen the second pre-moulding bed location of piecing together on the arm 9 in the middle of the S2.4 lifting bridge floor beam;
S2.5 is fixed on girder 7 in the middle of the bridge floor beam between the first bridge floor beam box-structure 3 and the second bridge floor beam box-structure 4; Choosing arm 8 with first is fixed on the first bridge floor beam box-structure 1; Choosing arm 9 with second is fixed on the second bridge floor beam box-structure 4;
S2.6 measures the distance L between the first bridge floor beam box-structure 3 and the second bridge floor beam box-structure 4;
S3. the preassembling method of arch rib and crossbeam;
S3.1 is with among the step S2.6, and after the pre-assembly unit of bridge floor beam, the distance L between the described first bridge floor beam box-structure 3 and the described second bridge floor beam box-structure 4 is foundation, the surplus of line cutting crossbeam 10;
S3.2 draws the port locations terrestrial reference of crossbeam 10 and the located lateral terrestrial reference of described first arch rib 1 and second arch rib 2;
S3.3 makes the 3rd pre-moulding bed of piecing together;
S3.4 is with first arch rib 1 and second arch rib, 2 liftings the last the 3rd pre-moulding bed location of piecing together; During the location, first arch rib 1 and second arch rib, 2 involutory its located lateral terrestrial references;
The port locations terrestrial reference of S3.5 coupling crossbeam 10, the 3rd pre-moulding bed location of piecing together on the lifting crossbeam 10;
S3.6 joins the bolt hole that bores crossbeam 10 two ends.
This method is divided into three parts with the pre-assembly unit that camber makes up steel bridge, and each part is independent pre-assembly unit respectively; After the pre-assembly unit that executes certain part, with each assembly dismounting, wait for the pre-assembly unit of other parts.
Carry out S1: the pre-assembly unit of arch rib, montant and bridge floor beam box-structure; Before the pre-assembly of lifting, execution in step S1.1: the port locations terrestrial reference of drawing first arch rib 1, second arch rib 2, first bridge floor beam box-structure 3, the second bridge floor beam box-structures, 4, the first montants 5 and second montant 6; Draw out first arch rib 1, second arch rib 2, the first bridge floor beam box-structure 3 on the ground, the second bridge floor beam box-structure 4, the port locations terrestrial reference of first montant 5 and second montant 6, said modules is accurately located each port by the vertical collimation method when lifting fixedly, deviation do not occur.
Execution in step S1.2: make the first pre-moulding bed of piecing together; The first pre-moulding bed of piecing together is used for supporting and fixing first arch rib 1, second arch rib 2, first bridge floor beam box-structure 3, the second bridge floor beam box-structures, 4, the first montants 5 and second montant 6.Make location and the assembly unit of an assembly fix and to finish smoothly.
In order to make first pre-position and the state of piecing together on the moulding bed with assembly all accurate, preferably, during the template leveling of moulding bed top, the height error≤1mm of template.
Execution in step S1.3: first arch rib 1 and the first bridge floor beam box-structure 3 are hung on the first pre-moulding bed of piecing together; During the location, involutory corresponding port locations terrestrial reference.Lift first arch rib 1 and the first bridge floor beam box-structure 3 and hang on the first pre-moulding bed of piecing together on the first pre-assembly moulding bed, carry out pre-assembly unit, according to the port locations terrestrial reference that step S1.1 draws, put and fix each assembly.
Execution in step S1.4: lift the first pre-moulding bed location of piecing together on first montant 5; Mate the port between first montant 5 and first arch rib 1 and the first bridge floor beam box-structure 3.Lift the first pre-moulding bed of piecing together on first montant 5, be placed between first arch rib 1 and the first bridge floor beam box-structure 3 and by the port locations terrestrial reference of state's first montant 5 and locate; Be connected with first arch rib 1 and the first bridge floor beam box-structure 3 by first montant, 5 upper and lower ports afterwards.
Execution in step S1.5: join the bolt hole that bores first montant, 5 two ends.After first montant 5 location, join the bolt hole that bores first montant, 5 two ends, the operation of joining brill is to be based upon each above-mentioned parts all on the pinpoint basis, therefore, can guarantee to join the precision of brill, thereby reach preframed purpose.Simultaneously, that fastening bolt is connected is more firm for the bolt hole of joining brill.
Execution in step S1.6. lifts second arch rib 2, the second bridge floor beam box-structure 4 and second montant 6 and joins the bolt hole that bores the second montant two ends 6 according to step S1.3～S1.5.The pre-assembly unit of second arch rib 2, the second bridge floor beam box-structure 4 and second montant 6 is consistent with the assembling method of an arch rib 1, the first bridge floor beam box-structure 3 and first montant 5 that step S1.3～S1.5 relates to.
Carry out S2: the bridge floor beam assembly unit; This process is consistent with the operating principle of step S1.Behind completing steps S1, with each assembly dismounting of lifting, standby.
Execution in step S2.1: girder 7, first is chosen the located lateral terrestrial reference that arm 8, second is chosen arm 9, the first bridge floor beam box-structure 3 and the second bridge floor beam box-structure 4 in the middle of drawing bridge floor beam; For preparing ensuing each assembly lifting location.
Execution in step S2.2: make the second pre-moulding bed of piecing together; Girder 7, first is chosen the moulding bed that arm 8, second is chosen arm 9, the first bridge floor beam box-structure 3 and the second bridge floor beam box-structure 4 in the middle of making bridge floor beam, makes the mutual linking of said modules can firm and bridge assembly unit environment that is virtually reality like reality.
Execution in step S2.3: lift the second pre-moulding bed location of piecing together on the first bridge floor beam box-structure 3 and the second bridge floor beam box-structure 4; During the location, the first bridge floor beam box-structure 3 and the second bridge floor beam box-structure, 4 involutory its located lateral terrestrial references also rigidly fix with the second pre-moulding bed of piecing together.
Execution in step S2.4 and S2.5: girder 7, first is chosen arm 8 and second and is chosen the second pre-moulding bed location of piecing together on the arm 9 in the middle of the lifting bridge floor beam; Girder 7 in the middle of the bridge floor beam is fixed between the first bridge floor beam box-structure 3 and the second bridge floor beam box-structure 4; Choosing arm 8 with first is fixed on the first bridge floor beam box-structure 3; Choosing arm 9 with second is fixed on the second bridge floor beam box-structure 4.By above-mentioned assembly unit, girder 7, first in the middle of the first bridge floor beam box-structure 3 of bridge floor beam, the second bridge floor beam box-structure 4, the bridge floor beam is chosen arm 8 and simulation is made in second linking of choosing between the arm 9, can accurately locate fastening bolt and bolt hole thereof.
This step also comprises step S2.6: measure the distance L between the first bridge floor beam box-structure 3 and the second bridge floor beam box-structure 4.Distance L between two bridge floor beam box-structures is significant for the pre-assembly unit of instructing ensuing crossbeam 10.
Carry out S3: arch rib and crossbeam are pieced together in advance.Step S1 is finished the assembly of pulling down after the pre-assembly unit lift use again, finish arch rib and crossbeam is pieced together in advance.
Execution in step S3.1: in step S2.6, after the pre-assembly unit of bridge floor beam, the distance L between the described first bridge floor beam box-structure 3 and the described second bridge floor beam box-structure 4 is foundation, the surplus of the described crossbeam 10 of line cutting.The first bridge floor beam box-structure of determining according to step S2.6 3 cuts crossbeam with the distance L between the second bridge floor beam box-structure 4, avoids it long, and influence is assembly in advance.
Execution in step S3.2: draw the port locations terrestrial reference of crossbeam 10 and the located lateral terrestrial reference of described first arch rib 1 and second arch rib 2; In view of crossbeam 10 between first arch rib 1 and second arch rib 2, be used for both fixedly connected; When drawing the port locations terrestrial reference of crossbeam 10, should consider the spacing L that records according to step S2.6.
Execution in step S3.3: make the 3rd pre-moulding bed of piecing together.
Execution in step S3.4: with first arch rib 1 and second arch rib, 2 liftings the last the 3rd pre-moulding bed location of piecing together; During the location, first arch rib 1 and second arch rib, 2 involutory its located lateral terrestrial references.Lift first arch rib 1 and second arch rib 2, simulate the position relation in the true bridge environment.
Execution in step S3.5 and S3.6: the port locations terrestrial reference of coupling crossbeam 10, the 3rd pre-moulding bed location of piecing together on the lifting crossbeam 10; Join and bore crossbeam 10 bolts at two ends holes.The 3rd pre-moulding bed of piecing together places between first arch rib 1 and second arch rib 2, and is connected with second arch rib 2 with first arch rib 1 by the port at crossbeam 10 two ends, and joins the auger shell keyhole on the lifting crossbeam 10.
In order to guarantee to locate the degree of accuracy of terrestrial reference, in aforesaid operations, above-mentioned all port locations terrestrial references and the drafting of located lateral terrestrial reference all realize by total powerstation.
Further, the first pre-assembly moulding bed, the second pre-assembly moulding bed and the 3rd pre-drafting use the same coordinate system of piecing together the location terrestrial reference coordinate of moulding bed and each assembly, thus avoid piecing together in advance not matching of moulding bed and each inter-module position.
The pre-assembly method of the camber combination steel bridge that invention provides has been realized the succinct pre-assembly unit of steel structure bridge, steel structure assembly is divided into the independent pre-assembly unit of three parts, each part can both realize the coupling assembly unit between associated component, thereby determines the accurate location of bolt hole; Reduce the whole preframed amount of labour of steel structure bridge and reduced dependence to large lifting equipment simultaneously, shortened the assembly unit cycle, promoted operating efficiency.In order to strengthen preframed effect, the same coordinate system is used in the drafting of location terrestrial reference, and adopts high-precision total powerstation; Thereby further promote preframed effect.
It should be noted last that, the above specific embodiment is only unrestricted in order to technical scheme of the present invention to be described, although with reference to example the present invention is had been described in detail, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement technical scheme of the present invention, and not breaking away from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (4)
1. the pre-assembly method of a steel bridge is characterized in that: each assembly of camber combination steel bridge is divided into some parts, and the dismounting of each several part independence is pieced together in advance; Comprise: the pre-assembly method of S1. arch rib, montant and bridge floor beam box-structure; S2. the pre-assembly method of bridge floor beam; S3. the pre-assembly method of arch rib and crossbeam; May further comprise the steps:
S1. the pre-assembly method of arch rib, montant and bridge floor beam box-structure;
S1.1 draws first arch rib (1), second arch rib (2), the first bridge floor beam box-structure (3), the second bridge floor beam box-structure (4), the port locations terrestrial reference of first montant (5) and second montant (6);
S1.2 makes the first pre-moulding bed of piecing together, the described first pre-assembly moulding bed top template leveling;
S1.3 hangs on the described first pre-moulding bed of piecing together with described first arch rib (1) and the described first bridge floor beam box-structure (3); During the location, involutory corresponding port locations terrestrial reference;
S1.4 lifts the above first pre-moulding bed location of piecing together of described first montant (5); Mate the port between described first montant (5) and described first arch rib (1) and the described first bridge floor beam box-structure (3);
S1.5 joins the bolt hole that bores described first montant (5) two ends;
S1.6. lift described second arch rib (2), the described second bridge floor beam box-structure (4) and second montant (6) according to step S1.3～S1.5 and join the bolt hole that bores described second montant (6) two ends;
S2. the pre-assembly method of bridge floor beam;
Girder (7), first was chosen the located lateral terrestrial reference that arm (8), second is chosen arm (9), the described first bridge floor beam box-structure (3) and the described second bridge floor beam box-structure (4) in the middle of S2.1 drew bridge floor beam;
S2.2 makes the second pre-moulding bed of piecing together;
S2.3 lifts the described first bridge floor beam box-structure (3) and the described second bridge floor beam box-structure (4) the last second pre-moulding bed location of piecing together; During the location, the described first bridge floor beam box-structure (3) and involutory its located lateral terrestrial reference of the described second bridge floor beam box-structure (4) also rigidly fix with the second pre-moulding bed of piecing together;
S2.4 lifts in the middle of the described bridge floor beam girder (7), first and chooses arm (8) and second and choose arm (9) the last second pre-moulding bed of piecing together and locate;
S2.5 is fixed on girder (7) in the middle of the described bridge floor beam between the described first bridge floor beam box-structure (3) and the described second bridge floor beam box-structure (4); Choosing arm (8) with described first is fixed on the described first bridge floor beam box-structure (3); Choosing arm (9) with described second is fixed on the described second bridge floor beam box-structure (4);
S2.6 measures the distance L between the described first bridge floor beam box-structure (3) and the described second bridge floor beam box-structure (4);
S3. the preassembling method of arch rib and crossbeam;
S3.1 is with among the described step S2.6, and after the pre-assembly unit of bridge floor beam, the distance L between the described first bridge floor beam box-structure (3) and the described second bridge floor beam box-structure (4) is foundation, the surplus of the line described crossbeam of cutting (10);
S3.2 draws the port locations terrestrial reference of crossbeam (10) and the located lateral terrestrial reference of described first arch rib (1) and second arch rib (2);
S3.3 makes the 3rd pre-moulding bed of piecing together;
S3.4 is with described first arch rib (1) and second arch rib (2) lifting the last the 3rd pre-moulding bed location of piecing together; During the location, involutory its located lateral terrestrial reference of described first arch rib (1) and second arch rib (2);
S3.5 mates the port locations terrestrial reference of described crossbeam (10), the above the 3rd pre-moulding bed location of piecing together of lifting crossbeam (10);
S3.6 joins the bolt hole that bores described crossbeam (10) two ends.
2. the pre-assembly method of steel bridge as claimed in claim 1 is characterized in that: among the described step S1.2, described first is pre-when piecing together the template leveling of moulding bed top, described template height error≤1mm.
3. the pre-assembly method of steel bridge as claimed in claim 1 is characterized in that: among described step S1.1, S2.1, the S3.2, drawing the instrument that port locations terrestrial reference and located lateral terrestrial reference adopt is total powerstation.
4. the pre-assembly method of steel bridge as claimed in claim 1 is characterized in that: described each location terrestrial reference and described first pre-moulding bed, second assembly moulding bed and the 3rd pre-coordinate use the same coordinate system when drawing of piecing together moulding bed in advance pieced together.
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| CN105113410A (en) * | 2015-05-06 | 2015-12-02 | 浙江东南网架股份有限公司 | Support moulding bed and linear forming method for setting up road steel bridge using same |
| CN105113410B (en) * | 2015-05-06 | 2017-03-01 | 浙江东南网架股份有限公司 | Support loose tool and using the line style manufacturing process supporting loose tool to set up highway steel bridge |
| CN105129614A (en) * | 2015-08-05 | 2015-12-09 | 武船重型工程股份有限公司 | Splice plate pre-arranging method |
| CN105369737A (en) * | 2015-10-09 | 2016-03-02 | 江苏中铁山桥重工有限公司 | Splicing process for segment for movable bridge |
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| CN103266569B (en) | 2015-08-05 |
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