CN111576348A - Aqueduct formwork system supported on Bailey beam and construction method - Google Patents
Aqueduct formwork system supported on Bailey beam and construction method Download PDFInfo
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- CN111576348A CN111576348A CN202010529715.1A CN202010529715A CN111576348A CN 111576348 A CN111576348 A CN 111576348A CN 202010529715 A CN202010529715 A CN 202010529715A CN 111576348 A CN111576348 A CN 111576348A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B5/00—Artificial water canals, e.g. irrigation canals
- E02B5/02—Making or lining canals
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G13/00—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills
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- General Engineering & Computer Science (AREA)
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- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
Abstract
The invention discloses an aqueduct formwork system supported on a Bailey beam and a construction method, and belongs to the technical field of aqueduct support. The invention comprises the steps of construction preparation; installing a packway steel pipe; paving a pavement slab; arranging a skid; installing a bottom template; installing an outer side template; binding a reinforcement cage and erecting an inner side template; concrete is poured, a hoisting screw is arranged on the lower chord of the Bailey beam to hoist and pull the steel tube of the beret, and a walking board is arranged on the steel tube of the beret; the aqueduct bottom template is fixed on the upper chord of the Bailey beam through a high-strength long screw rod, and the bottom template is supported through a bottom template bracket, so that the upper chord of the Bailey frame and the template bottom bracket jointly form a stable plane truss structure; the aqueduct bottom template is connected with the outer mold through a double-sheet steel hinge, and is supported by the auxiliary support mold through a split screw and a support steel pipe. According to the invention, the construction packway is arranged under the mine beam, so that the operation of constructors is convenient, the bottom die of the aqueduct is firmly connected with the Bailey beam, the bottom die of the aqueduct is hinged with the outer die steel, and the whole formwork system can not generate lateral bending and twisting, thereby having better economic and technical benefits.
Description
Technical Field
The invention relates to an aqueduct formwork system supported on a Bailey beam and a construction method thereof, which are mainly suitable for aqueduct construction with complicated geological soil conditions and difficult development of steel pipe full formwork.
Background
At present, aqueduct is a common building for water delivery engineering to span valleys, depressions and ditches, the height of a pier body is 20-33 m, the single span length of the aqueduct body is 20-30 m, the height of the top of the aqueduct body from the ground is large, and the construction difficulty is large. When the aqueduct passes through the paddy field and the ditch, the mode of supporting steel frame pipe full framing scaffold, movable formwork and the like is not suitable to be arranged.
In the traditional aqueduct formwork construction process, a full support operation platform needs to be arranged on the lower portion of the Bailey beam, and the aqueduct formwork structure is poor in stability, complex in process, long in construction period and large in investment.
In view of this, in order to avoid providing a full hall support operation platform at the bottom of the aqueduct, improve the connectivity between the aqueduct template system and the beret beam, fully ensure that the aqueduct template system does not generate lateral bending torsion, and reduce the engineering cost, the invention provides a simple and effective aqueduct formwork system and a construction method for supporting the beret beam.
Disclosure of Invention
The invention aims to avoid arranging a full-hall support operation platform at the bottom of the aqueduct, improve the connection performance between the upper chord of the bailey truss and the template bottom support, ensure that the aqueduct template system does not generate lateral bending and twisting, and have better technical and economic benefits.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the invention relates to a construction method of an aqueduct formwork system supported on a Bailey beam, which comprises the following steps: step one, construction preparation: checking the Bailey beam, checking whether the elevations of the upper chord member or the lower chord member of the Bailey beam are in the same level, binding the vertical web members of the Bailey beam together by using steel wires, designing the size and the height of a construction packway, prefabricating double steel hinges, and checking whether the required materials such as steel pipes, steel plates, wood templates, screws, steel wires and the like meet the requirements;
step two, mounting the packway steel pipe: a row of hoisting screw rods with hoisting rings facing downwards are arranged at two sides of the lower chord of the Bailey beam, a packway steel pipe is inserted into the hoisting rings, and two ends of the packway steel pipe penetrate through the lower chord of the Bailey beam;
step three, paving a pavement slab: paving a pavement steel plate at the position, where the rows of pavement steel pipes penetrate through the pipeline on the side face of the Bailey beam, checking the elevation of the pavement steel plate, and paving a pavement walking wood plate on the pavement steel plate;
step four, setting a skid: horizontally placing the deflection adjusting skid on the upper chord of the Bailey beam, aligning bolt holes arranged at two ends of the deflection adjusting skid with through holes on the upper chord of the Bailey beam, and reinforcing the deflection adjusting skid and the upper chord of the Bailey beam through high-strength short screws;
step five, mounting a bottom template: erecting paired bottom die supports at the middle opening of the deflection adjusting skid, installing bottom die plates on the paired bottom die supports, and connecting and fixing the bottom die supports, the bottom die plates, the deflection adjusting skid and the upper chord of the Bailey beam through high-strength long screws;
installing the outer side template, namely hoisting the outer side template onto the bottom template, and connecting the bottom template and the lower end of the outer side template through a double-steel-sheet hinge;
seventhly, binding a reinforcement cage and erecting an inner side template: an inner side template is erected on a reinforcement cage for binding the aqueduct, the outer side template is connected with the inner side template through a counter-pulling screw rod, a support steel pipe is arranged between the inner side templates which are symmetrical at two sides for supporting, and counter-pulling steel ropes are arranged between the outer side templates which are symmetrical at two sides for connecting;
step eight, pouring concrete: and after the formwork system is erected, pouring concrete of the groove body in a segmented and layered mode, and pouring a groove cap at the top of the groove body for jacking.
Furthermore, protective railings are welded at two ends of the packway steel pipe, and the packway walking wood plate is tightly attached to the protective railings and the Bailey beam lower chord members respectively.
Further, a template auxiliary supporting frame is installed on the deflection adjusting skid, an inclined plate is arranged at the upper end of the template auxiliary supporting frame, and the inclined plate abuts against the outer arc surface of the outer side template.
Furthermore, after the angles of the two steel sheets with holes on the double steel hinges are corrected, the template auxiliary supporting frame supports
Furthermore, the double-sheet steel hinge comprises a rotating shaft and a pair of steel sheets with holes, wherein the steel sheets with holes are arranged on the rotating shaft, one steel sheet with holes is fixed on the outer template through a steel nail, and the other steel sheet with holes is fixed on the bottom template through a steel nail.
Furthermore, the tip of supporting the steel pipe has the support end plate, the outer terminal surface of support end plate is contradicted in the surface of inboard template, the opposite drawing steel cable stiff end has been tied to the both ends of opposite drawing steel cable, the attached surface at the outside template of opposite drawing steel cable stiff end.
Furthermore, a screw base plate is arranged on the upper surface of the through hole of the deflection adjusting skid, and a chord base plate is padded on the lower surface of the through hole of the chord on the Bailey beam.
Further, a screw base plate is clamped between the bottom die support and the deflection adjusting skid.
The aqueduct formwork system supported on the Bailey beam is built through the steps.
The invention has the following beneficial effects:
(1) the construction packway designed by the invention has simple structure and good safety, and a full support operation platform is not required to be arranged according to the traditional construction mode, thereby saving the cost.
(2) The upper chord of the bailey truss and the bottom bracket of the template form a stable plane truss structure together, so that the stability of the structure of the formwork support system is fully ensured, and lateral bending and twisting are avoided.
Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a block diagram of the aqueduct formwork system of the present invention supported on a Bailey beam;
FIG. 2 is a schematic view of a horseway steel pipe hoisting structure;
FIG. 3 is a connection structure diagram of an upper chord of a Bailey beam and a bottom bracket of a template;
FIG. 4 is a cross-sectional view of FIG. 3;
FIG. 5 is a schematic view of a double-piece steel hinge structure;
FIG. 6 is a schematic view of the articulation of the outer form with the base form;
in the drawings, the components represented by the respective reference numerals are listed below:
1-a trough cap; 2-supporting the end plate; 3-supporting the steel pipe; 4-opposite pulling steel rope fixing end; 5-opposite pulling steel rope; 6-inner side template; 7-outer side template; 8-wedge shaped cushion blocks; 9-oppositely pulling the screw rod; 10-a tank body; 11-double steel hinges; 12-laying an auxiliary support frame on the template; 13-bottom template; 14-bottom die support; 15-high strength long screw; 16-high-strength short screw; 17-screw backing plate; 18-a guard rail; 19-deflection adjusting skid; 20-a beret beam upper chord; 21-chord backing plate; 22-Bailey beam vertical web member; 23-a lower chord of the bailey beam; 24-horseway steel pipe; 25-a hanging screw; 26-a hoisting ring; 27-horse race steel plate; 28-boom pad; 29-sidewalk wood board; 30-steel sheet with holes; 31-a rotating shaft; 32-steel nails.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "opening," "upper," "lower," "thickness," "top," "middle," "length," "inner," "peripheral," and the like are used in an orientation or positional relationship that is merely for convenience in describing and simplifying the description, and do not indicate or imply that the referenced component or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present invention.
The invention does not need to describe the technical requirements of welding between the reinforcing steel bars, concrete pouring key points, rammed earth, pile foundation construction quality standards and the like, and mainly explains the implementation mode of the structure of the invention.
Referring to fig. 1-6, the aqueduct formwork system supported on the beret beam is shown: the vertical web members 22 of the Bailey beams are arranged in a row, the upper end of each Bailey beam vertical web member 22 is provided with an upper Bailey beam chord member 20, the lower end of each Bailey beam vertical web member is provided with a lower Bailey beam chord member 23, and multiple rows of aqueducts are arranged on the lower Bailey beam chord member 23 in the axial direction.
The lower chords 23 of the Bailey beams are provided with suspender gaskets 28, the hoisting screws 25 are integral parts formed by screws and hoisting rings 26, the lower chords 23 of the two adjacent Bailey beams are provided with the suspender gaskets 28 with holes, the suspender gaskets 28 are internally provided with the screws, the screws are matched with nuts, and the nuts are pressed on the upper surfaces of the suspender gaskets 28.
A packway steel pipe 24 is arranged below the two corresponding hoisting screws 25, and a row of packway steel pipes 24 is arranged below the Bailey beam and corresponding to the hoisting screws 25.
Specifically, a hanging screw 25 is installed below the lower chord 23 of the two beret beams, a hanging ring 26 is arranged at the lower end of the hanging screw 25, a berm steel pipe 24 is matched in the hanging ring 26, guard rails 18 are arranged at two ends of the berm steel pipe 24, a berm steel plate 27 is welded on the berm steel pipe 24, and a berm walking wood plate 29 is laid on the berm steel plate 27.
The upper chord 20 of the Bailey beam row is provided with a deflection adjusting padder 19, the deflection adjusting padder 19 is provided with bottom die supports 14 which are arranged in pairs, the bottom die supports 14 are provided with bottom die plates 13, the bottom die plates 13 are provided with double steel hinges 11, the upper surface of the deflection adjusting padder 19 is also provided with template auxiliary support frames 12, the deflection adjusting padder 19 and the bottom die plates 13 are correspondingly provided with through holes and connected through high-strength long screws 15, the deflection adjusting padder 19 is correspondingly provided with through holes and connected with the upper chord 20 of the Bailey beam through high-strength short screws 16, and the template auxiliary support frames 12 and the bottom die supports 14 support aqueducts.
Still including the template frame that is used for pouring the aqueduct, the template frame includes outside template 7 and inboard template 6, and the ligature has the steel reinforcement cage between outside template 7 and the inboard template 6, and outside template 7, inboard template 6 are the arc and are equipped with two respectively, and it is fixed through drawing steel cable 5 to the both sides board of two outside templates 7, are equipped with between two inboard templates 6 and support steel pipe 3.
The outer formwork 7 is mounted on the bottom formwork 13 through a double-sheet steel hinge 11, specifically, the double-sheet steel hinge 11 includes a rotating shaft 31 and a pair of steel sheets 30 with holes mounted on the rotating shaft 31, wherein the steel sheets 30 with holes are fixed on the outer formwork 7 through steel nails 32, and the other steel sheet 30 with holes is fixed on the bottom formwork 13 through steel nails 32.
The tip of supporting steel pipe 3 has support end plate 2, supports the outer terminal surface of end plate 2 and contradicts in the surface of inboard template 6, has tied opposite-pulling steel cable stiff end 4 to the both ends of pulling steel cable 5, and the external surface at outside template 7 is attached to opposite-pulling steel cable stiff end 4, connects through opposite-pulling screw rod 9 between outside template 7 and the inboard template 6.
The invention also provides a construction method of the aqueduct formwork system supported on the Bailey beam, which comprises the following steps:
step one, construction preparation: checking the Bailey beams, checking whether the elevations of the upper chord 20 or the lower chord 23 of the Bailey beams are at the same level, checking whether the end parts of a plurality of Bailey beams are firmly installed or not, checking the Bailey beams, binding the vertical web members 22 of the Bailey beams which are adjacently arranged together by using steel wires, designing the size and the height of a construction pavement, prefabricating a double-piece steel hinge 11, and checking whether the required materials such as steel pipes, steel plates, wood templates, screws, steel wires and the like meet the requirements or not;
step two, mounting the packway steel pipe: a row of hoisting screws 25 with hoisting rings 26 are arranged at two sides of the Bailey beam lower chord 23, the hoisting rings 26 face downwards, a packway steel pipe 24 is inserted into the hoisting rings 26, two ends of the packway steel pipe 24 penetrate through the Bailey beam lower chord 23, and two ends of the packway steel pipe 24 are welded with the protective railings 18;
step three, paving a pavement slab: paving a pavement steel plate 27 at the position, where the rows of pavement steel pipes 24 penetrate through the pipeline on the side face of the Bailey beam, checking the elevation of the pavement steel plate, paving a pavement walking wood plate 29 on the pavement steel plate 27, and enabling the pavement walking wood plate 29 to be respectively clung to the guard rail 18 and the Bailey beam lower chord 23;
step four, setting a skid: transversely placing the deflection adjusting skid 19 on the upper chord 20 of the Bailey beam, aligning bolt holes arranged at two ends of the deflection adjusting skid 19 with through holes on the upper chord 20 of the Bailey beam, and reinforcing the deflection adjusting skid 19 and the upper chord 20 of the Bailey beam through high-strength short screws 16;
wherein, a screw base plate 17 is arranged on the upper surface of the through hole of the deflection adjusting skid 19, and a chord base plate 21 is arranged on the lower surface of the through hole of the upper chord 20 of the Bailey beam.
Step five, installing a bottom template 13: erecting paired bottom die supports 14 at the middle opening of the deflection adjusting skid 19, installing bottom die plates 13 on the paired bottom die supports 14, and connecting and fixing the bottom die supports 14, the bottom die plates 13, the deflection adjusting skid 19 and the Bailey beam upper chord 20 through high-strength long screws 15;
wherein, a screw rod backing plate 17 is clamped between the bottom die support 14 and the deflection adjusting skid 19.
Installing an outer side template 7, namely hoisting the outer side template 7 to a bottom template 13, connecting the bottom template 13 with the lower end of the outer side template 7 through a double-sheet steel hinge 11, fixing one perforated steel sheet 30 of the double-sheet steel hinge 11 on the outer side template 7 through a steel nail 32, fixing the other perforated steel sheet 30 on the bottom template 13 through the steel nail 32, connecting the outer side template 7 with the bottom template 13 through the double-sheet steel hinge 11, adjusting the outer side template 7 to rotate around a rotating shaft 31, installing a template auxiliary support frame 12 on a deflection adjusting skid 19 after the angular position of the outer side template 7 is adjusted to meet the design requirement, wherein the upper end of the template auxiliary support frame 12 is provided with an inclined plate which is abutted against the outer arc surface of the outer side template 7;
seventhly, binding a reinforcement cage and erecting an inner side template 6: an inner side formwork 6 is erected on a reinforcement cage for binding the aqueduct, an outer side formwork 7 is connected with the inner side formwork 6 through a counter-pulling screw 9, a support steel pipe 3 is arranged between the symmetrical inner side formworks 6 at two sides for supporting, and counter-pulling steel ropes 5 are arranged between the symmetrical outer side formworks 7 at two sides for connecting;
step eight, pouring concrete: after the formwork system is erected, concrete of the groove body 10 is poured in sections and layers, and a groove cap 1 is poured on the top of the groove body 10 to be pressed.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (8)
1. The construction method of the aqueduct formwork system supported on the Bailey beam is characterized by comprising the following steps of:
step one, construction preparation: checking the Bailey beam, checking whether the elevations of an upper chord (20) or a lower chord (23) of the Bailey beam are in the same level, binding and connecting vertical web members (22) of the Bailey beam which are adjacently arranged together by using steel wires, designing the size and the height of a construction pavement, and prefabricating a double-sheet steel hinge (11);
step two, mounting the packway steel pipe: a row of hoisting screws (25) with hoisting rings (26) are arranged at two sides of the Bailey beam lower chord (23), the hoisting rings (26) face downwards, a packway steel pipe (24) is inserted in the hoisting rings (26), and two ends of the packway steel pipe (24) penetrate through the Bailey beam lower chord (23);
step three, paving a pavement slab: paving a pavement steel plate (27) at the position of the row of pavement steel pipes (24) penetrating through the pipeline on the side surface of the Bailey beam, and paving a pavement walking wood plate (29) on the pavement steel plate (27);
step four, setting a skid: horizontally placing the deflection adjusting skid (19) on an upper chord (20) of the Bailey beam, aligning bolt holes arranged at two ends of the deflection adjusting skid (19) with through holes on the upper chord (20) of the Bailey beam, and reinforcing the deflection adjusting skid (19) and the upper chord (20) of the Bailey beam through high-strength short screws (16);
step five, installing a bottom template (13): erecting paired bottom die supports (14) at the central opening of the deflection adjusting skid (19), installing bottom die plates (13) on the paired bottom die supports (14), and connecting and fixing the bottom die supports (14), the bottom die plates (13), the deflection adjusting skid (19) and an upper chord (20) of the Bailey beam through high-strength long screws (15);
installing the outer side template (7), hoisting the outer side template (7) to the bottom template (13), and connecting the bottom template (13) with the lower end of the outer side template (7) through a double-steel-sheet hinge (11);
seventhly, binding a reinforcement cage and erecting an inner side template (6): an inner side template (6) is erected on a reinforcement cage for binding the aqueduct, the outer side template (7) is connected with the inner side template (6) through a counter-pulling screw rod (9), a support steel pipe (3) is arranged between the inner side templates (6) which are symmetrical at two sides for supporting, and counter-pulling steel ropes (5) are arranged between the outer side templates (7) which are symmetrical at two sides for connecting;
step eight, pouring concrete: after the formwork system is erected, concrete is poured into the groove body (10) in a segmented and layered mode, and a groove cap (1) is poured onto the top of the groove body (10) to be pressed.
2. The construction method of the aqueduct formwork system supported on the Bailey beams is characterized in that the guard rails (18) are welded at two ends of the packway steel pipes (24), and the packway walking wood plates (29) are respectively tightly attached to the guard rails (18) and the Bailey beam lower chords (23).
3. The construction method of the aqueduct formwork system supported on the Bailey beam as claimed in claim 1, wherein a formwork auxiliary support frame (12) is installed on the deflection adjusting skid (19), and the upper end of the formwork auxiliary support frame (12) is provided with a sloping plate which is abutted against the outer cambered surface of the outer formwork (7).
4. The construction method of the aqueduct formwork system supported on the Bailey beam as claimed in claim 3, wherein the formwork auxiliary support frame (12) is used for supporting after the angles of the two steel sheets (30) with holes on the double steel hinges (11) are corrected.
5. The method for constructing the aqueduct support system supported on the Bailey beam as claimed in claim 1, wherein the double steel hinge (11) comprises a rotating shaft (31) and a pair of steel sheets (30) with holes mounted on the rotating shaft (31), wherein one steel sheet (30) with holes is fixed on the outer formwork (7) by a steel nail (32), and the other steel sheet (30) with holes is fixed on the bottom formwork (13) by a steel nail (32).
6. The construction method of the aqueduct formwork system supported on the Bailey beam as claimed in claim 1, wherein the end of the supporting steel tube (3) is provided with a supporting end plate (2), the outer end surface of the supporting end plate (2) is abutted against the surface of the inner formwork (6), the two ends of the counter-pulling steel cable (5) are bolted with counter-pulling steel cable fixing ends (4), and the counter-pulling steel cable fixing ends (4) are attached to the outer surface of the outer formwork (7).
7. The construction method of the aqueduct formwork system supported on the Bailey beams as claimed in claim 1, wherein a screw tie plate (17) is placed on the upper surface of the through hole of the flexibility adjusting skid (19), and a chord tie plate (21) is padded on the lower surface of the through hole of the upper chord (20) of the Bailey beams.
8. The aqueduct formwork system supported on the Bailey beam is characterized by being built through the steps.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010529715.1A CN111576348A (en) | 2020-06-11 | 2020-06-11 | Aqueduct formwork system supported on Bailey beam and construction method |
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| CN202010529715.1A CN111576348A (en) | 2020-06-11 | 2020-06-11 | Aqueduct formwork system supported on Bailey beam and construction method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111827149A (en) * | 2020-09-01 | 2020-10-27 | 浙江世润建创科技发展有限公司 | Bridge widening hinge structure and construction method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111827149A (en) * | 2020-09-01 | 2020-10-27 | 浙江世润建创科技发展有限公司 | Bridge widening hinge structure and construction method |
| CN111827149B (en) * | 2020-09-01 | 2022-01-28 | 浙江世润建创科技发展有限公司 | Bridge widening hinge structure and construction method |
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