CN114790691B - Construction method for under-bridge steel structure pipe gallery channel - Google Patents
Construction method for under-bridge steel structure pipe gallery channel Download PDFInfo
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- CN114790691B CN114790691B CN202210390798.XA CN202210390798A CN114790691B CN 114790691 B CN114790691 B CN 114790691B CN 202210390798 A CN202210390798 A CN 202210390798A CN 114790691 B CN114790691 B CN 114790691B
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D18/00—Bridges specially adapted for particular applications or functions not provided for elsewhere, e.g. aqueducts, bridges for supporting pipe-lines
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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
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
- E01D2/04—Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type
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- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a construction method of a steel structure pipe gallery channel of an underbridge, which comprises the following steps: firstly, carrying out construction preparation work of a steel structure pipe gallery channel; after construction preparation work is completed, sectional manufacturing is carried out on the bottom plate of the steel structure pipe gallery; then hoisting the steel structure pipe gallery bottom plate to a set position below the flange plate between the left bridge and the right bridge in a sectioning way for fixed installation, thereby forming a pipe gallery channel by matching Liang Tixing of the left bridge and the right bridge; and then installing pipeline brackets on the beam bodies of the left bridge and/or the right bridge. Compared with the traditional construction process in which the end well and the direct-buried sleeve are arranged to realize the bridge crossing, the invention reduces the engineering quantity of the two end wells, the direct-buried sleeve, the cable well and the like, reduces the engineering cost, obviously improves the economic and social benefits, and has certain energy-saving, emission-reducing and environment-friendly benefits. Meanwhile, a more efficient construction method is provided for the bridge crossing construction of the pipe gallery, the construction speed of the pipe gallery is improved, and a more beneficial guarantee is provided for the high-speed construction of the national comprehensive pipe gallery.
Description
Technical Field
The invention relates to a pipe gallery construction method, in particular to a construction method for a steel structure pipe gallery passage under a bridge.
Background
With the progress of the times, the society economy is developed at a high speed, urban planning is becoming perfect, municipal engineering is advancing steadily, and the arrangement of various municipal pipelines such as electric power, communication, water supply, drainage, fuel gas and the like is becoming more and more complicated. At present, urban underground pipeline construction has the phenomena of repeatedly excavating urban roads, confusing competing underground space, wantonly wasting underground pipeline position resources, frequent engineering accidents and the like. These blind construction phenomena not only cause huge losses of state property, but also bring trouble to the life of people, and also impair the image of government and city. Based on this, urban underground utility tunnel stress occurs. The utility tunnel is a common municipal tunnel built under the urban road for accommodating various municipal engineering pipelines, and is used for achieving the purpose of centralized comprehensive layout and management of the municipal pipelines, and facilitating daily operation and later maintenance.
The bridge is taken as an important component of the road, most roads are provided with at least one or more bridges, the practicability of the under-bridge steel structure pipe gallery channel is obvious, and the production efficiency and the production cost play a vital role in pipe gallery construction. At present, most municipal bridges adopt structural forms such as prefabricated box beams, T beams or cast-in-situ box beams, left and right bridges are adjacent, and a certain passing space exists below a bridge flange plate, so that a construction pipe gallery is commonly adopted at the position under the bridge between the left and right bridges. The existing construction of the under-bridge pipe gallery is to arrange two end wells and some direct-buried sleeves at the end of the bridge to realize bridge crossing, and the construction period is long and the construction cost is high.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides a construction method for the under-bridge steel structure pipe gallery channel, which can reduce the construction cost and shorten the construction period.
The construction method of the under-bridge steel structure pipe gallery channel according to the embodiment of the invention comprises the following steps:
firstly, carrying out construction preparation work of a steel structure pipe gallery channel;
after construction preparation work is completed, sectional manufacturing is carried out on the bottom plate of the steel structure pipe gallery;
then hoisting the steel structure pipe gallery bottom plate to a set position below a flange plate between the left bridge and the right bridge in a sectioning manner for fixed installation, so as to form a pipe gallery channel in cooperation with Liang Tixing of the left bridge and the right bridge;
and then installing pipeline brackets on the beam bodies of the left bridge and/or the right bridge.
According to the embodiment of the invention, at least the following technical effects are achieved:
according to the invention, the steel structure pipe gallery bottom plate is directly installed, the pipe gallery channel is formed by enclosing the steel structure pipe gallery bottom plate with the beam body and the flange plates of the left bridge and the right bridge, and then the pipeline is arranged by the arrangement of the pipeline bracket, so that the pipe gallery can be rapidly constructed in the application situation of the adjacent left bridge and the right bridge. Compared with the traditional construction process in which an end well and a direct-buried sleeve are arranged to realize the bridge crossing, the method reduces the engineering quantity of the two end wells, the direct-buried sleeve, the cable well and the like, reduces the engineering cost, obviously improves the economic and social benefits, and has certain energy-saving, emission-reducing and environment-friendly benefits. Meanwhile, a more efficient construction method is provided for the bridge crossing construction of the pipe gallery, the construction speed of the pipe gallery is improved, and a more beneficial guarantee is provided for the high-speed construction of the national comprehensive pipe gallery. Provides a more efficient and economical construction reference for pipe gallery bridging in the future.
According to some embodiments of the invention, the steel structure pipe gallery channel construction preparation work comprises arranging lifting holes on flange plates of the left and right bridges, and arranging the lifting holes according to the sectional length of the steel structure pipe gallery bottom plate, so that each section of the steel structure pipe gallery bottom plate corresponds to at least four lifting holes; when in hoisting operation, the manual hoist is erected above the flange plates of the left bridge and the right bridge corresponding to the lifting holes, and the chain of the manual hoist is lowered to be connected with the bottom plate of the steel structure pipe gallery through the lifting holes to lift.
According to some embodiments of the invention, the lifting holes are formed in the construction stage of the flange plates of the left bridge and the right bridge, and the lifting holes are pre-buried according to the thickness of the flange plates and the design interval by adopting PVC pipes.
According to some embodiments of the invention, the manual hoist is erected by a hoist support, the hoist support comprising:
the support legs are provided with two first angle steels, the two first angle steels are welded together in a mode that the upper ends of the two first angle steels are abutted and the lower ends of the two first angle steels are separated, right-angle faces of the two first angle steels are coplanar, the other right-angle faces are opposite, so that the upper ends of the two first angle steels are abutted together through right-angle edges, and a reinforcing rod is arranged between the two first angle steels;
the cross beam is made of angle steel, the cross beam is distributed in a mode that right-angle sides face upwards, two ends of the cross beam are welded on the two supporting legs, and the end parts of the cross beam are carried on the right-angle sides of the supporting legs, which are abutted against the two first angle steels;
and the hanging beam is horizontally welded on two right-angle surfaces of the cross beam along the length direction vertical to the cross beam so as to be used for hanging the hook of the manual hoist.
According to some embodiments of the invention, the beam is provided with:
one end of the second angle steel is welded on one supporting leg, the other end of the second angle steel is welded with a bearing rod at a position close to the end part, and two ends of the bearing rod are welded on two right-angle surfaces of the second angle steel;
and one end of the third angle steel penetrates through the area formed by the bearing rod and the second angle steel and is welded and fixed with the second angle steel, and the other end of the third angle steel is welded on the other supporting leg.
According to some embodiments of the invention, the steel structure piping lane bottom plate comprises:
the width of the steel structure truss is matched with the beam body spacing of the left bridge and the right bridge;
and the grating plate is paved on the steel structure truss.
According to some embodiments of the invention, the steel structure pipe gallery construction preparation work comprises arranging boom holes on flange plates of the left bridge and the right bridge, wherein the positions and the numbers of the boom holes are corresponding to each section of steel structure pipe gallery bottom plate, so that each section of steel structure pipe gallery bottom plate corresponds to a plurality of boom holes; after the steel structure pipe gallery bottom plate is hoisted to a set position below a flange plate between the left bridge and the right bridge, a round steel suspender penetrates through the suspender hole from the bridge deck position to be connected with the steel structure truss, and the upper end of the round steel suspender is fixed through the cooperation of a lower pad steel plate and a bolt.
According to some embodiments of the invention, the steel structure pipe gallery channel construction preparation work comprises embedding high-strength bolt sleeves when constructing beam body parts of left and right bridges; when the pipeline bracket is installed, the pipeline bracket is fixedly installed on the side wall of the beam body by adopting the cooperation of a high-strength bolt and the high-strength bolt sleeve.
According to some embodiments of the invention, the steel structure pipe gallery channel construction preparation work comprises arranging reinforced concrete overhanging parts at the bottom of a beam body when constructing the beam body parts of the left and right bridges; when the steel structure pipe gallery bottom plate is hoisted, the steel structure pipe gallery bottom plate is hoisted to the upper part of the overhanging part, and the overhanging part is used for bearing the steel structure pipe gallery bottom plate.
According to some embodiments of the invention, the steel structure pipe gallery channel construction preparation work comprises pre-burying a load steel plate at the bottom of a beam body when constructing beam body parts of left and right bridges; when the steel structure pipe gallery bottom plate is hoisted, the steel structure pipe gallery bottom plate is welded and fixed when two sides of the steel structure pipe gallery bottom plate are aligned with the load steel plate.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
FIG. 1 is a schematic diagram of an overall construction of a tunnel of an underbridge steel structure in accordance with the present invention;
FIGS. 2 and 3 are schematic illustrations of an installation of the underbridge steel structure gallery channel of the present invention;
FIG. 4 is a schematic view of a construction of a pipeline bracket according to the present invention;
FIG. 5 is a schematic illustration of an underbridge steel structure gallery channel in accordance with the invention and FIG. 6;
fig. 7 and 8 are schematic views of a structure of the gourd support according to the present invention.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and to simplify the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Referring to fig. 1 to 8, the invention provides a construction method of a steel structure pipe gallery under a bridge, comprising the following steps:
firstly, carrying out construction preparation work of a steel structure pipe gallery channel;
after the construction preparation work is finished, the steel structure pipe gallery bottom plate 300 is manufactured in a segmented mode;
then the steel structure pipe gallery bottom plate 300 is hoisted to a set position below the flange plate 101 between the left bridge and the right bridge in a segmented manner for fixed installation, so that a pipe gallery channel is formed by matching with the beam bodies 100 of the left bridge and the right bridge;
the pipeline bracket 200 is then installed on the beam body 100 of the left bridge and/or the right bridge.
According to the invention, the steel structure pipe gallery bottom plate 300 is directly installed, the pipe gallery channel is formed by enclosing the steel structure pipe gallery bottom plate 300 with the beam body 100 and the flange plate 101 of the left bridge and the right bridge, and then the pipeline is arranged by the arrangement of the pipeline bracket 200, so that the pipe gallery can be rapidly constructed under the application situation of the adjacent left bridge and the right bridge. Compared with the traditional construction process in which an end well and a direct-buried sleeve are arranged to realize the bridge crossing, the method reduces the engineering quantity of the two end wells, the direct-buried sleeve, the cable well and the like, reduces the engineering cost, obviously improves the economic and social benefits, and has certain energy-saving, emission-reducing and environment-friendly benefits. Meanwhile, a more efficient construction method is provided for the bridge crossing construction of the pipe gallery, the construction speed of the pipe gallery is improved, and a more beneficial guarantee is provided for the high-speed construction of the national comprehensive pipe gallery. Provides a more efficient and economical construction reference for pipe gallery bridging in the future.
To facilitate lifting of the steel structure pipe lane bottom plate 300, in some embodiments of the present invention, the steel structure pipe lane channel preparation work includes providing lifting holes on the flange plates 101 of the left and right bridges, and the lifting holes are provided according to the sectional length of the steel structure pipe lane bottom plate 300 such that each section of the steel structure pipe lane bottom plate 300 corresponds to at least four lifting holes. During hoisting operation, a manual hoist is erected above the flange plates 101 of the left and right bridges corresponding to the lifting holes, and the chain of the manual hoist is lowered to the bottom plate 300 of the connecting steel structure pipe gallery through the lifting holes to be lifted. This ensures a stable lifting process.
Considering that if the lifting holes are drilled on the flange plate 101 in the later stage, the construction difficulty is high, and the construction efficiency can be affected. Thus, in some embodiments of the present invention, the lifting holes are set at the construction stage of the flange plates 101 of the left and right bridges, and are pre-buried according to the thickness of the flange plates 101 and the design pitch by using PVC pipes. The pipe diameter of the PVC pipe can be flexibly selected according to the needs.
By adopting the construction setting of the embodiment, the lifting hole is formed by embedding the PVC pipe, post-processing is not needed, and the construction efficiency is improved. If drilling is performed, steel bars in the flange plate 101 can be drilled, and structural strength of the flange plate 101 is affected, so that risks and hidden danger of damaging the internal structure of the flange plate 101 do not exist in the construction setting of the embodiment, and safety is higher. And the material performance of PVC pipe is more favorable to the friction that produces between the chain of manual hoist when promoting steel construction piping lane bottom plate 300 than concrete pore, and the wearing and tearing are less, more are favorable to the chain to pass through fast, smoothly.
In some embodiments of the invention, the manual hoist is erected by a hoist support, the hoist support comprising:
the two support legs are provided with two first angle steels 501, the two first angle steels 501 are welded together in a mode that the upper ends of the two first angle steels 501 are abutted and the lower ends of the two first angle steels are separated, right-angle faces of the two first angle steels 501 are coplanar, the other right-angle faces are opposite, so that the upper ends of the two first angle steels 501 are abutted together through the right-angle edges, and a reinforcing rod 502 is arranged between the two first angle steels 501;
the cross beam 500 is made of angle steel, the cross beam 500 is distributed in a mode that the right angle side faces upwards, two ends of the cross beam 500 are welded on two supporting legs, and the end parts of the cross beam 500 are carried on the right angle sides of the supporting legs, which are abutted by the two first angle steels 501;
the hanging beam 503 is welded on two right angle surfaces of the cross beam 500 along the direction perpendicular to the length direction of the cross beam 500 horizontally, so as to be used for hanging the hook of the manual hoist.
By adopting the structural arrangement of the embodiment, the hand hoist is mounted on the hanging beam 503 through the hook at the upper end of the hand hoist, and the two ends of the cross beam 500 are mounted on the supporting legs, so that when the hand hoist lifts the steel structure pipe gallery bottom plate 300 to receive downward acting force, the force can be directly transferred to the supporting legs, and the force can be transferred to the supporting legs through the welding point instead of the welding point, so that the structure is more stable and reliable. Simultaneously, the lower ends of the two first angle steels 501 of the supporting legs are separated, so that four stable supporting point supporting beams 500 can be formed. The reinforcing bars 502 are also provided to ensure stability and structural strength of the first angle steel 501. In addition, the structural arrangement of the embodiment is convenient for taking materials and welding the hanging beam 503.
In practical application, when no obstacle exists at the bridge deck position corresponding to the flange plate 101, reinforcing angle steel can be arranged between two supporting legs to improve structural strength.
And when the bridge deck position has an obstacle, avoidance can be achieved by increasing the length of the cross beam 500. Considering that the length of a single angle steel is too long, the strength is weak, in order to alleviate this, in some embodiments of the present invention, the cross beam 500 is provided with:
one end of the second angle steel is welded on one supporting leg, the other end of the second angle steel is welded with a bearing rod at a position close to the end part, and two ends of the bearing rod are welded on two right-angle surfaces of the second angle steel;
and one end of the third angle steel passes through the area formed by the bearing rod and the second angle steel and is welded and fixed with the second angle steel, and the other end of the third angle steel is welded on the other supporting leg.
Adopt the structure setting of this embodiment, crossbeam 500 increases through the overlapping setting of second angle steel, third angle steel, and the overlap portion of second angle steel, third angle steel can increase intensity simultaneously, alleviates the intensity that the length increase leads to and weakens the condition, guarantees the structural strength and the stability of crossbeam 500 atress when promoting. Besides welded fastening, the third angle steel and the second angle steel are further connected in a reinforcing mode through the bearing rod, in actual production, the third angle steel and the second angle steel are placed in an overlapping mode and welded fastening mode, and then the bearing rod is welded on the second angle steel, so that the bearing rod is abutted to the third angle steel at the same time, and the overall structural strength and stability of the third angle steel and the second angle steel are improved.
It will be appreciated that in practical applications, more angles may be provided to increase the length of the beam 500, and more load-bearing bars may be provided to increase structural strength.
In some embodiments of the present invention, the steel structure piping lane bottom plate 300 comprises:
the width of the steel structure truss 301 is matched with the distance between the beam bodies 100 of the left bridge and the right bridge;
grid plates 302 laid on the steel structure truss 301.
Wherein the steel truss 301 is formed by angle steel welding or bolting and is used for bearing the grating plates 302. The grid plate 302 and the steel structure truss 301 may be fixed by a connection such as a bolt, or may be fixed by a connection not directly but by an assembly relationship after the completion of the hoisting. For example, after the steel truss 301 is fixed after being installed and fixed, the grid plates 302 are laid on the steel truss 301, and there is also a matching relationship between the grid plates 302, so that they do not move at will.
In the lifting process, the chain can penetrate through the grating plate 302 to be connected with the steel structure truss 301, or the connecting structure capable of penetrating through the grating plate 302 is arranged on the steel structure truss 301 to be connected with the chain, so that the lifting process can be performed, the grating plate 302 can be prevented from falling in the lifting process, and the lifting process can be smoothly completed.
In the first embodiment of the present invention, the steel structure pipe gallery construction preparation work includes providing boom holes on the flange plates 101 of the left and right bridges, and the positions and the number of the boom holes are set corresponding to each section of the steel structure pipe gallery bottom plate 300, so that each section of the steel structure pipe gallery bottom plate 300 corresponds to a plurality of boom holes; after the steel structure pipe gallery bottom plate 300 is hoisted to a set position below the flange plate 101 between the left bridge and the right bridge, a steel structure truss 301 is connected from the bridge deck position to the boom hole by penetrating a round steel boom 400 downwards, and the upper end of the round steel boom 400 is fixed by matching a lower pad steel plate 401 with bolts.
The boom holes can be pre-buried by adopting PVC pipes according to the thickness of the flange plate 101 and the design interval.
With the construction method of the present embodiment, the bearing of the steel structure piping lane bottom plate 300 is achieved by the round steel boom 400. Lifting lugs 403 are welded at the upper end of the steel structure truss 301, hole sites are formed in the lifting lugs 403, connecting steel plates 402 are welded at the lower end of the round steel suspender 400, hole sites are formed in the connecting steel plates 402 corresponding to the lifting lugs 403, and the connecting steel plates and the lifting lugs are locked and fixed through bolts, so that connection between the round steel suspender 400 and the steel structure truss 301 is achieved. The upper end of the round steel suspender 400 is provided with a thread section, and the upper end of the round steel suspender passes through the lower pad steel plate 401 positioned at the bridge deck and is locked by a bolt, so that a fixed form of the lower pad steel plate 401 matched with the bolt is formed. Since the green belt is generally disposed at the bridge floor position later, the upper end of the round steel boom 400 does not affect the disposition of the bridge floor.
In a second embodiment of the present invention, the steel structure pipe gallery channel construction preparation work includes providing a reinforced concrete overhanging portion at the bottom of the girder 100 when constructing the girder 100 portions of the left and right bridges; when the steel structure pipe gallery bottom plate 300 is hoisted, the steel structure pipe gallery bottom plate 300 is hoisted to the upper part of the overhanging part, and the steel structure pipe gallery bottom plate 300 is borne through the overhanging part.
By adopting the construction method of the embodiment, the cantilever part is constructed on the beam body 100 of the left and right bridges to bear the steel structure pipe gallery bottom plate 300, so that the bridge deck space is not affected, the reliability is higher than that of a hoisting fixed structural form, a boom hole is not required, and the construction efficiency is higher.
In a third embodiment of the present invention, the steel structure pipe gallery channel construction preparation work includes pre-burying a load steel plate at the bottom of the girder 100 when constructing the girder 100 parts of the left and right bridges; when the steel structure pipe rack bottom plate 300 is hoisted, the steel structure pipe rack bottom plate 300 is welded and fixed when the two sides are aligned with the load steel plates. The construction form of this embodiment is similar to the construction form of the aforesaid second embodiment, has all optimized the fixed step of hoist and mount, all can not influence the bridge floor setting, need not to set up corresponding hole, and the reliability is higher, and the efficiency of construction is higher.
To simplify installation of the pipeline bracket 200, in some embodiments of the present invention, the steel structure pipe gallery channel construction preparation includes embedding high strength bolt sleeves while constructing the beam body 100 portions of the left and right bridges; in installing the pipeline bracket 200, high strength bolts are used in cooperation with high strength bolt sleeves to fixedly install the pipeline bracket 200 to the side wall of the beam body 100. Thus, the hole site does not need to be re-drilled.
In some embodiments of the present invention, the pipeline bracket 200 includes a rail channel 201 and a square steel pipe 202, wherein the rail channel 201 is vertically fixed on the side wall of the beam body 100 through the cooperation of a pre-embedded high-strength bolt sleeve, the rail channel 201 is vertically formed with a plurality of rail grooves, and the square steel pipe 202 is provided with a plurality of rail grooves and can be installed on the rail channel 201 in an up-down adjustable manner through the cooperation of bolts and the rail grooves. Thus, the position of the square steel tube 202 can be adjusted according to actual needs.
In addition, the invention also comprises material approach and material acceptance work in the steel structure pipe gallery channel construction preparation work. The steel truss 301 is painted after being manufactured, the paint is not painted at the two sides or the two ends by reserving a distance of 50mm, and the paint is replenished after being finally lifted and fixed.
In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means 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, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.
Claims (5)
1. The construction method of the under-bridge steel structure pipe gallery channel is characterized by comprising the following steps of:
firstly, carrying out construction preparation work of a steel structure pipe gallery channel;
after construction preparation work is completed, sectional manufacturing is carried out on the bottom plate of the steel structure pipe gallery;
then hoisting the steel structure pipe gallery bottom plate to a set position below a flange plate between the left bridge and the right bridge in a sectioning manner for fixed installation, so as to form a pipe gallery channel in cooperation with Liang Tixing of the left bridge and the right bridge;
then installing pipeline brackets on the beam bodies of the left bridge and/or the right bridge;
the steel structure pipe gallery channel construction preparation work comprises the steps that lifting holes are formed in flange plates of a left bridge and a right bridge, and the lifting holes are formed according to the sectional length of a steel structure pipe gallery bottom plate, so that each section of the steel structure pipe gallery bottom plate corresponds to at least four lifting holes; when in hoisting operation, a manual hoist is erected above the flange plates of the left bridge and the right bridge and corresponds to the lifting holes, and a chain of the manual hoist is lowered to be connected with the steel structure pipe gallery bottom plate through the lifting holes to be lifted;
the manual hoist is erect through a hoist support, the hoist support includes:
the support legs are provided with two first angle steels, the two first angle steels are welded together in a mode that the upper ends of the two first angle steels are abutted and the lower ends of the two first angle steels are separated, right-angle faces of the two first angle steels are coplanar, the other right-angle faces are opposite, so that the upper ends of the two first angle steels are abutted together through right-angle edges, and a reinforcing rod is arranged between the two first angle steels;
the cross beam is made of angle steel, the cross beam is distributed in a mode that right-angle sides face upwards, two ends of the cross beam are welded on the two supporting legs, and the end parts of the cross beam are carried on the right-angle sides of the supporting legs, which are abutted against the two first angle steels;
the hanging beam is horizontally welded on two right-angle surfaces of the cross beam along the length direction vertical to the cross beam so as to be used for hanging the hook of the manual hoist;
the beam is provided with:
one end of the second angle steel is welded on one supporting leg, the other end of the second angle steel is welded with a bearing rod at a position close to the end part, and two ends of the bearing rod are welded on two right-angle surfaces of the second angle steel;
one end of the third angle steel passes through the region formed by the bearing rod and the second angle steel and is welded and fixed with the second angle steel, and the other end of the third angle steel is welded on the other supporting leg;
the steel structure pipe gallery bottom plate comprises a steel structure truss and a grating plate, and the width of the steel structure truss is matched with the beam body spacing of the left bridge and the right bridge; the grid plates are paved on the steel structure truss;
the steel structure pipe gallery channel construction preparation work comprises the steps that boom holes are formed in flange plates of left and right bridges, and the positions and the number of the boom holes are corresponding to those of each section of steel structure pipe gallery bottom plate, so that each section of steel structure pipe gallery bottom plate corresponds to a plurality of boom holes; after the steel structure pipe gallery bottom plate is hoisted to a set position below a flange plate between the left bridge and the right bridge, a round steel suspender penetrates through the suspender hole from the bridge deck position to be connected with the steel structure truss, and the upper end of the round steel suspender is fixed through the cooperation of a lower pad steel plate and a bolt.
2. The method for constructing the steel structure pipe gallery of the underbridge according to claim 1, wherein the lifting holes are formed in the construction stage of the flange plates of the left bridge and the right bridge, and the lifting holes are pre-buried by adopting PVC pipes according to the thickness of the flange plates and the design spacing.
3. The method for constructing an under-bridge steel structure pipe gallery channel according to claim 1, wherein the steel structure pipe gallery channel construction preparation work comprises embedding high-strength bolt sleeves when constructing beam body parts of left and right bridges; when the pipeline bracket is installed, the pipeline bracket is fixedly installed on the side wall of the beam body by adopting the cooperation of a high-strength bolt and the high-strength bolt sleeve.
4. The method for constructing an under-bridge steel structure pipe gallery channel according to claim 1, wherein the steel structure pipe gallery channel construction preparation work comprises arranging reinforced concrete overhanging parts at the bottom of a beam body when constructing beam body parts of left and right bridges; when the steel structure pipe gallery bottom plate is hoisted, the steel structure pipe gallery bottom plate is hoisted to the upper part of the overhanging part, and the overhanging part is used for bearing the steel structure pipe gallery bottom plate.
5. The method for constructing an under-bridge steel structure pipe gallery channel according to claim 1, wherein the steel structure pipe gallery channel construction preparation work comprises pre-burying a load steel plate at the bottom of a girder body when constructing the girder body parts of the left and right bridges; when the steel structure pipe gallery bottom plate is hoisted, the steel structure pipe gallery bottom plate is welded and fixed when two sides of the steel structure pipe gallery bottom plate are aligned with the load steel plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210390798.XA CN114790691B (en) | 2022-04-14 | 2022-04-14 | Construction method for under-bridge steel structure pipe gallery channel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210390798.XA CN114790691B (en) | 2022-04-14 | 2022-04-14 | Construction method for under-bridge steel structure pipe gallery channel |
Publications (2)
| Publication Number | Publication Date |
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| CN114790691A CN114790691A (en) | 2022-07-26 |
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| CN114790691A (en) | 2022-07-26 |
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