CN110820515A - Steel box girder structure convenient for positioning girder section and construction method thereof - Google Patents
Steel box girder structure convenient for positioning girder section and construction method thereof Download PDFInfo
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- CN110820515A CN110820515A CN201911128547.9A CN201911128547A CN110820515A CN 110820515 A CN110820515 A CN 110820515A CN 201911128547 A CN201911128547 A CN 201911128547A CN 110820515 A CN110820515 A CN 110820515A
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- steel box
- box girder
- girder
- hoisting
- positioning
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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
-
- 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
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
- E01D21/06—Methods or apparatus specially adapted for erecting or assembling bridges by translational movement of the bridge or bridge sections
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- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a steel box girder structure convenient for positioning girder sections and a construction method thereof, relates to the technical field of bridge members, and aims to solve the technical problem that the steel box girder structure has high positioning and connecting difficulty among sections in the prior art, and the technical scheme of the invention is as follows: the steel box girder comprises a first steel box girder, a middle steel box girder and a last steel box girder; a plurality of middle steel box girders are spliced between the first steel box girder and the last steel box girder, and the first steel box girder and the middle steel box girders, the middle steel box girder and the middle steel box girders, and the middle steel box girder and the last steel box girders are connected through socket structures.
Description
Technical Field
The invention relates to the technical field of bridge members, in particular to a steel box girder structure convenient for positioning girder sections and a construction method thereof.
Background
In urban road construction, because of the influence of urban terrain, the crossing between roads and bridges becomes necessary. The steel box girder bridge has the characteristics of light weight, high strength, high construction speed, strong environmental protection and the like, and is widely applied to municipal new construction and reconstruction projects in recent years. The traditional steel box girder is generally formed by connecting a top plate, a bottom plate, a web plate, a diaphragm plate and the like in an all-welded mode, and is called as the steel box girder because the appearance of the steel box girder is like a box. The steel box girder is usually constructed by hoisting, is greatly influenced by weather, needs to be preset with a temporary support platform, and then is hoisted to the platform for welding. Because the steel box girder is heavy and bulky, the sectional steel box girder has great difficulty in accurate positioning and intersegment connection, the angle and the position need to be adjusted repeatedly in the hoisting process, and the construction difficulty is great.
Disclosure of Invention
In order to solve the technical problem that the positioning and connecting difficulty between the sections of the steel box girder structure is higher in the prior art, the technical scheme of the invention is as follows:
the steel box girder structure convenient for positioning the girder section comprises a first steel box girder, a middle steel box girder and a last steel box girder; a plurality of middle steel box girders are spliced between the first steel box girder and the last steel box girder, and the first steel box girder and the middle steel box girders, the middle steel box girder and the middle steel box girders, and the middle steel box girder and the last steel box girders are connected through socket structures.
Furthermore, the socket structure comprises a socket arranged on the connecting end face and a plug protruding out of the connecting end face.
Furthermore, every the connection terminal surface has two sockets and two plugs, socket and plug are diagonal distribution.
Further, the outer diameter of the plug is gradually reduced towards the tail end of the plug.
The construction method of the steel box girder structure convenient for positioning the girder section comprises the following steps:
step S1, installing cranes, namely symmetrically installing two cranes at two sides of the axis of the bridge deck according to the capacity of hoisting equipment and the actual situation on site;
step S2, carrying the beam section and anchoring and positioning the beam carrier;
step S3, the hanger is connected with the beam section, the hanger and the hoisting beam section are flexibly connected by a steel cable, and the quick connection of the hanger and the beam section hoisting point can be realized under the condition of bumping;
step S4, hoisting inspection, namely controlling the stress balance of each hoisting point through a crane system, stopping hoisting after the weight of a hoisting beam section is 30%, inspecting and confirming whether the conditions of the crane system and a lifting lug are good or not, gradually loading every 500kN as one level, inspecting the conditions of the crane and the lifting lug during each loading, and finally inspecting when the loading is close to 80% of the hoisting weight of the beam section;
step S5, hoisting, wherein when no fault is detected and confirmed, the two cranes hoist the beam section at the same time;
and step S6, hanging the beam sections to the bridge floor position for beam section matching, and positioning through socket structures between the beam sections.
Further, step S1 includes the steps of:
step S11, installing a crane walking track;
step S12, installing a crane steel framework, and integrally installing or assembling on site after assembling rod pieces in bulk;
step S13, installing a lifting mechanism;
and step S14, installing the hydraulic, electric and control systems.
Further, step S2 includes the steps of:
step S21, the beam section is transported by a special self-propelled beam transporting ship;
step S22, berthing the beam-transporting ship to a safe water area near a pier after arrival, and waiting for hoisting;
and step S23, the girder transporting ship is anchored, and the girder section is transported to the hoisting position to be anchored and positioned.
Further, step S6 includes the steps of: :
step S61, hoisting the first steel box girder to a construction base body of the bridge for fixing, and enabling the connection end face to face the direction of the bridge extension section;
step S62, a temporary support at the bottom of the steel box girder is built, and the height of the temporary support is a certain distance away from the bottom of the steel box girder, so that the steel box girder has a certain moving space in the vertical direction of the bridge deck;
step S63, hoisting the middle steel box girder to the position of the bridge floor, enabling the connection end face of the middle steel box girder to be parallel to and at the same height as the connection end face of the head steel box girder, enabling the middle steel box girder to approach the head steel box girder, inserting the plug and the socket of the middle steel box girder into the socket and the plug of the head steel box girder respectively, and filling the space between the middle steel box girder and the temporary support with a cushion plate after the insertion is completed;
step S64, referring to step S63, splicing the plurality of intermediate steel box girders;
and step S65, hoisting the last steel box girder to the position of the bridge floor, inserting the connection end face with the middle steel box girder through a socket structure, and fixing the other end with the construction matrix of the bridge.
Compared with the prior art, the steel box girder structure convenient for positioning the girder section and the construction method thereof have the beneficial effects that:
according to the steel box girder structure convenient for positioning the girder sections and the construction method thereof, the socket structure is arranged on the connecting end surface of the steel box girder, so that the pre-connected steel box girder and the installed steel box girder form the inserting fit, the positioning and the connection between the steel box girder sections are assisted in the construction process, the repeated angle and position adjustment in the hoisting process is avoided, the construction efficiency can be effectively improved, and the construction difficulty can be effectively reduced.
Drawings
FIG. 1 is a schematic illustration of a steel box beam structure of the present invention to facilitate positioning of beam sections;
fig. 2 is a schematic view of the construction of the steel box girder structure for facilitating the positioning of the girder segments according to the present invention.
Detailed Description
The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings of the present invention. 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.
As shown in fig. 1-2, the steel box girder structure convenient for positioning girder segments in the invention comprises a first steel box girder 1, a middle steel box girder 2 and a last steel box girder 3; a plurality of middle steel box girders 2 are spliced between the first steel box girder 1 and the last steel box girder 3, and the first steel box girder 1 and the middle steel box girder 2, the middle steel box girder 2 and the middle steel box girder 2, and the middle steel box girder 2 and the last steel box girder 3 are connected through socket structures.
The socket structure comprises a socket 4 arranged on the connecting end surface and a plug 5 protruding out of the connecting end surface.
Each connecting end face has two sockets 4 and two plugs 5, and the sockets 4 and the plugs 5 are distributed diagonally.
The outer diameter of the plug 5 is gradually reduced toward the distal end thereof.
The construction method of the steel box girder structure convenient for positioning the girder section comprises the following steps:
step S1, installing the cranes 6, and symmetrically installing two cranes 6 on two sides of the axis of the bridge deck according to the capacity of the hoisting equipment and the actual situation on site;
step S2, carrying the beam section and anchoring and positioning the beam carrier;
step S3, the hanger is connected with the beam section, the hanger and the hoisting beam section are flexibly connected by a steel cable, and the quick connection of the hanger and the beam section hoisting point can be realized under the condition of bumping;
step S4, hoisting inspection, namely controlling the stress balance of each hoisting point through a crane 6 system, stopping hoisting after the weight of a hoisting beam section is 30%, inspecting and confirming whether the conditions of the crane 6 system and a lifting lug are good or not, gradually loading every 500kN for one level, inspecting the conditions of the crane 6 and the lifting lug during each loading, and finally inspecting when the loading is close to 80% of the hoisting weight of the beam section;
step S5, hoisting, wherein when no fault is detected, the two cranes 6 hoist the beam section at the same time;
and step S6, hanging the beam sections to the bridge floor position for beam section matching, and positioning through socket structures between the beam sections.
Step S1 includes the following steps:
step S11, installing a traveling rail of the crane 6;
step S12, installing a crane 6 steel framework, and integrally installing or assembling on site after assembling rod pieces in bulk;
step S13, installing a lifting mechanism;
and step S14, installing the hydraulic, electric and control systems.
Step S2 includes the following steps:
step S21, the beam section is transported by a special self-propelled beam transporting ship;
step S22, berthing the beam-transporting ship to a safe water area near a pier after arrival, and waiting for hoisting;
and step S23, the girder transporting ship is anchored, and the girder section is transported to the hoisting position to be anchored and positioned.
Step S6 includes the following steps: :
step S61, hoisting the first steel box girder 1 to a construction base body of the bridge for fixing, and enabling the connection end face to face the direction of the bridge extension section;
step S62, a temporary support at the bottom of the steel box girder is built, and the height of the temporary support is a certain distance away from the bottom of the steel box girder, so that the steel box girder has a certain moving space in the vertical direction of the bridge deck;
step S63, hoisting the middle steel box girder 2 to the bridge deck position, enabling the connection end face of the middle steel box girder 2 to be parallel to and at the same height as the connection end face of the head steel box girder 1, enabling the middle steel box girder 2 to approach the head steel box girder 1, respectively inserting the plug 5 and the socket 4 of the middle steel box girder 2 into the socket 4 and the plug 5 of the head steel box girder 1, and filling the space between the middle steel box girder 2 and the temporary support with a cushion plate after the insertion is completed;
step S64, referring to step S63, splicing the plurality of intermediate steel box girders 2;
and step S65, hoisting the last steel box girder 3 to the bridge floor, inserting the connection end face with the middle steel box girder 2 through a socket structure, and fixing the other end with the construction matrix of the bridge.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (8)
1. The steel box girder structure convenient for positioning the girder section is characterized by comprising a first steel box girder, a middle steel box girder and a last steel box girder; a plurality of middle steel box girders are spliced between the first steel box girder and the last steel box girder, and the first steel box girder and the middle steel box girders, the middle steel box girder and the middle steel box girders, and the middle steel box girder and the last steel box girders are connected through socket structures.
2. The steel box beam structure for facilitating positioning of beam sections according to claim 1, wherein the socket structure comprises a socket opening at the connection end face and a plug protruding from the connection end face.
3. The steel box beam structure for facilitating beam section positioning of claim 2, wherein each of the connection end faces has two sockets and two plugs, the sockets and plugs being diagonally distributed.
4. The steel box beam structure for facilitating the positioning of beam segments according to claim 3, wherein the outer diameter of the spigot tapers toward the distal end thereof.
5. The construction method of the steel box girder structure convenient for positioning the girder section is characterized by comprising the following steps of:
step S1, installing cranes, namely symmetrically installing two cranes at two sides of the axis of the bridge deck according to the capacity of hoisting equipment and the actual situation on site;
step S2, carrying the beam section and anchoring and positioning the beam carrier;
step S3, the hanger is connected with the beam section, the hanger and the hoisting beam section are flexibly connected by a steel cable, and the quick connection of the hanger and the beam section hoisting point can be realized under the condition of bumping;
step S4, hoisting inspection, namely controlling the stress balance of each hoisting point through a crane system, stopping hoisting after the weight of a hoisting beam section is 30%, inspecting and confirming whether the conditions of the crane system and a lifting lug are good or not, gradually loading every 500kN as one level, inspecting the conditions of the crane and the lifting lug during each loading, and finally inspecting when the loading is close to 80% of the hoisting weight of the beam section;
step S5, hoisting, wherein when no fault is detected and confirmed, the two cranes hoist the beam section at the same time;
and step S6, hanging the beam sections to the bridge floor position for beam section matching, and positioning through socket structures between the beam sections.
6. The method for manufacturing a steel box girder structure convenient for girder segment positioning according to claim 5, wherein the step S1 comprises the steps of:
step S11, installing a crane walking track;
step S12, installing a crane steel framework, and integrally installing or assembling on site after assembling rod pieces in bulk;
step S13, installing a lifting mechanism;
and step S14, installing the hydraulic, electric and control systems.
7. The method for manufacturing a steel box girder structure convenient for girder segment positioning according to claim 5, wherein the step S2 comprises the steps of:
step S21, the beam section is transported by a special self-propelled beam transporting ship;
step S22, berthing the beam-transporting ship to a safe water area near a pier after arrival, and waiting for hoisting;
and step S23, the girder transporting ship is anchored, and the girder section is transported to the hoisting position to be anchored and positioned.
8. The method for manufacturing a steel box girder structure convenient for girder segment positioning according to claim 5, wherein the step S6 comprises the steps of: :
step S61, hoisting the first steel box girder to a construction base body of the bridge for fixing, and enabling the connection end face to face the direction of the bridge extension section;
step S62, a temporary support at the bottom of the steel box girder is built, and the height of the temporary support is a certain distance away from the bottom of the steel box girder, so that the steel box girder has a certain moving space in the vertical direction of the bridge deck;
step S63, hoisting the middle steel box girder to the position of the bridge floor, enabling the connection end face of the middle steel box girder to be parallel to and at the same height as the connection end face of the head steel box girder, enabling the middle steel box girder to approach the head steel box girder, inserting the plug and the socket of the middle steel box girder into the socket and the plug of the head steel box girder respectively, and filling the space between the middle steel box girder and the temporary support with a cushion plate after the insertion is completed;
step S64, referring to step S63, splicing the plurality of intermediate steel box girders;
and step S65, hoisting the last steel box girder to the position of the bridge floor, inserting the connection end face with the middle steel box girder through a socket structure, and fixing the other end with the construction matrix of the bridge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911128547.9A CN110820515A (en) | 2019-11-18 | 2019-11-18 | Steel box girder structure convenient for positioning girder section and construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911128547.9A CN110820515A (en) | 2019-11-18 | 2019-11-18 | Steel box girder structure convenient for positioning girder section and construction method thereof |
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2019
- 2019-11-18 CN CN201911128547.9A patent/CN110820515A/en active Pending
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Application publication date: 20200221 |