CN210481996U - Fold section statically indeterminate structure case roof beam - Google Patents
Fold section statically indeterminate structure case roof beam Download PDFInfo
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- CN210481996U CN210481996U CN201921078943.0U CN201921078943U CN210481996U CN 210481996 U CN210481996 U CN 210481996U CN 201921078943 U CN201921078943 U CN 201921078943U CN 210481996 U CN210481996 U CN 210481996U
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- box girder
- roof beam
- case roof
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- rectangular frame
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Abstract
The utility model discloses a fold section hyperstatic structure case roof beam belongs to the case roof beam field, and its technical scheme main points are including the case roof beam body, the case roof beam body is including the exterior sheathing that sets up its outer fringe, the both sides of case roof beam body all are provided with the lateral part and strut the skeleton, strut the skeleton including indulging muscle, horizontal muscle and erecting the muscle, horizontal muscle encloses into rectangular frame with erecting the muscle to connect through indulging the muscle between the adjacent rectangular frame, rectangular frame's top slope is provided with a backplate, rectangular frame's inside slope is provided with first strengthening rib, the slope of the rectangular frame outside is provided with the second strengthening rib, first strengthening rib is the setting of falling triangle-shaped with the second strengthening rib, and this kind folds section hyperstatic structure case roof beam's advantage lies in supporting strength height.
Description
Technical Field
The utility model relates to a case roof beam, in particular to fold section hyperstatic structure case roof beam.
Background
One kind of bridge engineering center sill, the inside is hollow form, and there is the edge of a wing on upper portion both sides, similar case, therefore obtains the name, reinforced concrete structure's case roof beam divide into prefabricated case roof beam and cast-in-place case roof beam. The box girder prefabricated in the independent site can be erected after the lower project is finished by combining the bridge girder erection machine, so that the project progress can be accelerated, and the construction period can be saved; cast-in-place box girders are mostly used for large continuous bridges. The common materials are divided into two types, namely a prestressed reinforced concrete box girder and a steel box girder. The prestressed reinforced concrete box girder is constructed on site, and transverse prestress is also arranged in some cases besides longitudinal prestress of the section of the box girder body; the steel box girder is generally processed in a factory and then transported to a site for installation, and has an all-steel structure and a partially reinforced concrete pavement layer.
The structure is widely used in the field of existing building construction, taking the construction process of the Taizhou bay bridge as an example, the Taizhou bay bridge and the wiring engineering start from a six-Aode town in Sanmen county, are connected with the Sanmen bay bridge and the wiring engineering, finally are connected with the Leqing bay bridge and the wiring engineering in the south town of the Wenling City, the total length of a route is 102.381km, the county and the city along the route mainly comprise three doors, adjacent sea, Zanthojiang, road bridge and greenling, the route is a TS13 mark segment engineering, the origin-destination pile number is K174+410-K181+900, the total length of the route is 7.49, and the route is located in the Wenling City in Zhejiang province.
Chinese patent with publication number CN203755128U discloses a box girder, which comprises a box girder main body, wherein the box girder main body is provided with an upper bridge deck and a lower bridge deck, the upper bridge deck is wider than the lower bridge deck, the edge of the upper bridge deck is connected with the edge of the lower bridge deck through a plurality of steel cables, the outer edge of the lower bridge deck is provided with a guardrail, and a box girder fixing device is arranged below the lower bridge deck.
Chinese patent No. CN105735136B discloses a formwork for integrally forming a steel bar of a roof of a box girder and a construction method thereof, wherein the formwork comprises a formwork cross bar, a formwork vertical bar, a formwork lower layer longitudinal and oblique support, a formwork cantilever bar, a limiting bar, a support bar, a U-shaped positioning bar, a steel pipe, an L-shaped steel pipe and a formwork long layer longitudinal bar. The die set vertical rod, the die set cross rod and the die set lower layer cross rod are welded together and are provided with oblique supports, and steel pipes are symmetrically arranged on the outer sides of the die set vertical rod; one end of the mould frame cantilever rod is welded and fixed with the mould frame upright rod, and the other end of the mould frame cantilever rod is provided with a limiting rod; the longitudinal rod on the upper layer of the die carrier is provided with a U-shaped positioning rib; an arc-shaped positioning groove is formed in the supporting rod, and two ends of the supporting rod are fixed to the top of the die frame vertical rod; the two ends of the horizontal rod of the detachable formwork are respectively provided with an L-shaped steel pipe, and one end of each L-shaped steel pipe is provided with a detachable formwork positioning horizontal rod to form a detachable formwork.
The box girder used at the bridge closure section is needed, and the two sides of the existing box girder lack of supporting structures, so that the supporting strength of the two sides of the box girder is insufficient.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a fold section statically indeterminate structure case roof beam, its advantage lies in that supporting strength is high.
The above technical purpose of the present invention can be achieved by the following technical solutions:
the utility model provides a fold section hyperstatic structure case roof beam, includes the case roof beam body, the case roof beam body is including the exterior sheathing that sets up its outer fringe, the both sides of case roof beam body all are provided with the lateral part and strut the skeleton, strut the skeleton including indulging muscle, horizontal muscle and erecting the muscle, horizontal muscle encloses into rectangular frame with erecting the muscle to connect through indulging the muscle between the adjacent rectangular frame, rectangular frame's top slope is provided with a backplate, rectangular frame's inside slope is provided with first strengthening rib, the slope of the rectangular frame outside is provided with the second strengthening rib, first strengthening rib is the setting of falling triangle-shaped with the second strengthening rib.
Through adopting above-mentioned technical scheme, the lateral part is strutted the skeleton and is strutted the side of case roof beam body through a backplate, and the lateral part is strutted skeleton itself and is had good structural strength, and the lateral part is strutted the skeleton and can be shared the load of case roof beam body side, and oblique stress can be born to first strengthening rib and second strengthening rib to increase the lateral part and strut the ability that the skeleton bore oblique load, strengthen the support intensity of case roof beam body both sides.
Further, a plurality of reinforcement ribs of welded fastening among the rectangular frame, reinforcement rib group is located directly over first strengthening rib, the top of reinforcement rib and the back timber welded fastening of lateral part support skeleton, the bottom of reinforcement rib and the horizontal muscle welded fastening of the top.
By adopting the technical scheme, the top of the lateral supporting framework is the part mainly bearing the vertical load, the part of the lateral supporting framework bears larger stress, and the reinforcing ribs are used for supporting the top of the lateral supporting framework, so that the lateral supporting framework more stably supports the box girder body.
Further, the reinforcing ribs are provided in three numbers, and the three reinforcing ribs are arranged in an inverted three-fork shape.
Through adopting above-mentioned technical scheme, the reinforcement rib is such shape and arranges, and three reinforcement rib has more stable bearing structure, and the reinforcement rib can bear more loads, and the reinforcement rib can more stable support lateral part strut the top of skeleton.
Furthermore, a plurality of sleepers are arranged between the supporting and protecting plate and the outer template, and the sleepers are arranged along the longitudinal direction of the section of the box girder body.
By adopting the technical scheme, the lateral supporting framework is abutted against the outer template through the sleeper rail which is made of steel, the structural strength and the bending resistance of the sleeper rail are better, and the structural strength of the joint of the supporting and protecting plate and the outer template is further increased.
Furthermore, the bottom of case roof beam body is provided with bottom supporting construction, bottom supporting construction includes the case roof beam bottom plate, the bottom and the case roof beam bottom plate welded fastening of erecting the muscle.
Through adopting above-mentioned technical scheme, the box girder bottom plate bears the box girder body, shares the load of box girder body, increases the structural strength of box girder body bottom.
Further, the below of case roof beam bottom plate sets up the bottom gusset plate, wear to be equipped with a plurality of jibs along vertical direction in the case roof beam body, the jib passes case roof beam bottom plate and a gusset plate, the upper and lower both ends of jib all set up the locking channel-section steel, and wherein the locking channel-section steel of jib upper end offsets with the top surface of case roof beam body, and the locking channel-section steel of jib lower extreme offsets with the bottom gusset plate, the upper and lower both ends of jib still threaded connection have the nut that is used for compressing tightly the locking channel-section steel.
Through adopting above-mentioned technical scheme, the jib is through two upper and lower locking channel-section steels with box girder body, box girder bottom plate and portion gusset plate more stable fixed together.
Furthermore, a plurality of reinforcing channel steel are arranged between the reinforcing plate and the box girder bottom plate.
Through adopting above-mentioned technical scheme, the gusset plate offsets with the case roof beam bottom plate through consolidating the channel-section steel, leaves the cavity between the reinforcement channel-section steel, effectively reduces bottom supporting construction's dead weight.
Furthermore, the distance between the reinforced channel steel close to the top corner of the bottom of the box girder body is 20cm, and the distance between the reinforced channel steel of the rest parts is 50 cm.
By adopting the technical scheme, the reinforced channel steel is arranged more densely because of the stress concentration part at the top corner of the bottom of the box girder body.
To sum up, the utility model discloses following beneficial effect has:
1. the lateral supporting framework supports the lateral surface of the box girder body, the lateral supporting framework has good structural strength, the lateral supporting framework can share the load of the lateral surface of the box girder body, and the first reinforcing rib and the second reinforcing rib can bear oblique stress, so that the capability of the lateral supporting framework for bearing oblique load is increased, and the supporting strength of two sides of the box girder body is enhanced;
2. the top of the lateral supporting framework is a part mainly bearing vertical load, the part of the lateral supporting framework bears larger stress, and the reinforcing ribs are used for supporting the top of the lateral supporting framework, so that the lateral supporting framework more stably supports the box girder body.
Drawings
FIG. 1 is a front view structural schematic diagram of a closure statically indeterminate structural box girder;
fig. 2 is a structural schematic diagram of a closure statically indeterminate structure box girder.
In the figure, 1, a box girder body; 11. an outer template; 12. an inner template; 2. a bottom support structure; 21. a box girder bottom plate; 22. a bottom gusset plate; 23. reinforcing channel steel; 3. a boom; 31. locking channel steel; 32. a nut; 4. a side supporting framework; 41. longitudinal ribs; 42. transverse ribs; 43. erecting ribs; 44. laying rails; 45. a first reinforcing rib; 46. a second reinforcing rib; 47. a reinforcing rib; 48. and supporting the guard plate.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Example (b): a box girder with a closure section statically indeterminate structure is shown in figure 1 and comprises a box girder body 1, wherein an outer template 11 used for forming the appearance of the box girder body 1 and an inner template 12 used for forming an inner cavity of the box girder body 1 are arranged in the box girder body 1, when the box girder body 1 is formed, a constructor sets the outer template 11 and the inner template 12 at a bridge closure section, then injects concrete into a cavity between the outer template 11 and the inner template 12, and waits for the concrete to be cooled and then forms the box girder body 1.
Wear to be equipped with a plurality of jibs 3 along vertical direction in the case roof beam body 1, jib 3 is even array form and distributes to jib 3 is symmetrical arrangement about 1 center of case roof beam body.
The hanger rods 3 penetrate through the box girder body 1, the box girder bottom plate 21 and the bottom reinforcing plate 22 from top to bottom in sequence. Locking channel steel 31 penetrates through the upper end and the lower end of the suspender 3, the locking channel steel 31 is arranged along the length direction of the box girder body 1, and two No. 30 channel steels are selected as the locking channel steel 31. The locking channel steel 31 of jib 3 upper end offsets with the top surface of box girder body 1, and the locking channel steel 31 of jib 3 lower extreme offsets with bottom gusset plate 22 to the upper and lower both ends threaded connection of jib 3 has the nut 32 that is used for compressing tightly locking channel steel 31. When the box girder is used, the locking channel steels 31 at the upper part and the lower part are matched to clamp the box girder body 1 and the bottom supporting structure 2.
A plurality of reinforcing channel steel 23 are arranged between the box girder bottom plate 21 and the bottom reinforcing plate 22, the reinforcing channel steel 23 is longitudinally arranged along the section of the box girder body 1, and the adjacent channel steel are arranged in parallel. The bottom reinforcing plate 22 is in contact with the box girder bottom plate 21 through a reinforcing channel 23. And a cavity is reserved between the reinforced channel steel 23, so that the dead weight of the bottom supporting structure 2 is light, and the load of the bottom supporting structure 2 caused by the dead weight is reduced.
The distance between the reinforcing channel steel 23 close to the top corner of the bottom of the box girder body 1 is 20cm, and the distance between the reinforcing channel steel 23 of the rest part is 50 cm. Because the top corner of the bottom of the box girder body 1 is sharp, the stress concentration is easy to occur at the position, and the space between the reinforcing channel steel 23 at the position is small.
The reinforcing channel 23 is preferably a channel 8.
Both sides of box girder body 1 all are provided with lateral part support frame 4, and support frame includes indulging muscle 41, horizontal muscle 42 and erecting muscle 43, and horizontal muscle 42 and erecting muscle 43 enclose into rectangular frame, connect through indulging muscle 41 between the adjacent rectangular frame, and it is fixed through the welded mode at lateral part support frame 4's node to indulge muscle 41, horizontal muscle 42 and erect muscle 43.
The top of the rectangular frame is obliquely provided with a supporting plate 48, the supporting plate 48 is welded and fixed with the longitudinal bar 41, and the inclination degree of the supporting plate 48 is the same as that of the lower surfaces of the two sides of the box girder body 1.
A plurality of sleepers 44 are arranged between the supporting and protecting plate 48 and the outer template 11, and the sleepers 44 are arranged along the longitudinal direction of the section of the box girder body 1. Sleeper 44 is preferably a channel 8. The rails 44 themselves have good structural strength and bending strength, further increasing the structural strength at the junction of the sheathing panel 48 and the exterior sheathing panel 11.
The top of rectangular frame is provided with a plurality of stiffening ribs, and the stiffening rib increases the structural strength at lateral part support frame 4 top, and reinforcement rib 47 is provided with three to three reinforcement rib 47 is the arrangement of falling trident. The top of the reinforcing rib 47 is welded to the bottom surface of the support plate 48, and the bottom of the reinforcing rib 47 is welded to the uppermost transverse rib 42.
The inside slope of rectangular frame is provided with first strengthening rib 45, and the slope of rectangular frame outside is provided with second strengthening rib 46, and first strengthening rib 45 is the setting of falling triangle-shaped with second strengthening rib 46. The first reinforcing ribs 45 are located directly below the reinforcing ribs. The first beads 45 and the second beads 46 can bear a load in an oblique direction.
The specific implementation process comprises the following steps: when the box girder is used, the side supporting framework 4 supports the side surface of the box girder body 1 through the supporting plate 48, and the side supporting framework 4 can share the load of the side surface of the box girder body 1; bottom supporting construction 2 supports box girder body 1 through box girder bottom plate 21 and bottom gusset plate 22, improves the ability that box girder body 1 bore load in all aspects.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.
Claims (8)
1. The utility model provides a fold section statically indeterminate structure case roof beam, includes case roof beam body (1), case roof beam body (1) is including exterior sheathing (11) that set up its outer fringe, its characterized in that: the box girder comprises a box girder body (1), and is characterized in that lateral supporting frameworks (4) are arranged on two sides of the box girder body (1), each supporting framework comprises a longitudinal rib (41), a transverse rib (42) and a vertical rib (43), each transverse rib (42) and each vertical rib (43) form a rectangular frame, adjacent rectangular frames are connected through the longitudinal ribs (41), a supporting plate (48) is arranged on the top of each rectangular frame in an inclined mode, first reinforcing ribs (45) are arranged on the inner side of each rectangular frame in an inclined mode, second reinforcing ribs (46) are arranged on the outer side of each rectangular frame in an inclined mode, and the first reinforcing ribs (45) and the second reinforcing ribs (46) are arranged in an inverted triangle mode.
2. The closure statically indeterminate structural box girder of claim 1, characterized in that: a plurality of strengthening ribs (47) of welded fastening among the rectangular frame, strengthening rib (47) group is located directly over first strengthening rib (45), the top of strengthening rib (47) and the back timber welded fastening of lateral part support skeleton (4), the bottom of strengthening rib (47) and horizontal muscle (42) welded fastening of the top.
3. The closure statically indeterminate structural box girder of claim 2, characterized in that: the reinforcing ribs (47) are provided in three, and the three reinforcing ribs (47) are arranged in an inverted three-pronged shape.
4. The closure statically indeterminate structural box girder of claim 1, characterized in that: a plurality of sleepers (44) are arranged between the supporting and protecting plate (48) and the outer template (11), and the sleepers (44) are arranged along the longitudinal direction of the section of the box girder body (1).
5. The closure statically indeterminate structural box girder of claim 1, characterized in that: the bottom of case roof beam body (1) is provided with bottom supporting construction (2), bottom supporting construction (2) include case roof beam bottom plate (21), the bottom and case roof beam bottom plate (21) welded fastening of erecting muscle (43).
6. The closure statically indeterminate structural box girder of claim 5, characterized in that: the box girder comprises a box girder body (1), and is characterized in that a bottom reinforcing plate (22) is arranged below the box girder bottom plate (21), a plurality of hanging rods (3) are arranged in the box girder body (1) in a penetrating mode along the vertical direction, the hanging rods (3) penetrate through the box girder bottom plate (21) and the reinforcing plate, locking channel steel (31) are arranged at the upper end and the lower end of each hanging rod (3), the locking channel steel (31) at the upper end of each hanging rod (3) is abutted to the top surface of the box girder body (1), the locking channel steel (31) at the lower end of each hanging rod (3) is abutted to the bottom reinforcing plate (22), and nuts (32) used for compressing the locking channel steel (31) are connected to the.
7. The closure statically indeterminate structural box girder of claim 6, characterized in that: and a plurality of reinforcing channel steel (23) are arranged between the reinforcing plate and the box girder bottom plate (21).
8. The box girder with the closure statically indeterminate structure as set forth in claim 7, wherein: the distance between the reinforcing channel steel (23) close to the top corner of the bottom of the box girder body (1) is 20cm, and the distance between the reinforcing channel steel (23) of the rest part is 50 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921078943.0U CN210481996U (en) | 2019-07-10 | 2019-07-10 | Fold section statically indeterminate structure case roof beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921078943.0U CN210481996U (en) | 2019-07-10 | 2019-07-10 | Fold section statically indeterminate structure case roof beam |
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| Publication Number | Publication Date |
|---|---|
| CN210481996U true CN210481996U (en) | 2020-05-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921078943.0U Active CN210481996U (en) | 2019-07-10 | 2019-07-10 | Fold section statically indeterminate structure case roof beam |
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| CN (1) | CN210481996U (en) |
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- 2019-07-10 CN CN201921078943.0U patent/CN210481996U/en active Active
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