CN211571358U - Through tied arch bridge for increasing transverse rigidity of main beam - Google Patents
Through tied arch bridge for increasing transverse rigidity of main beam Download PDFInfo
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- CN211571358U CN211571358U CN201922266964.1U CN201922266964U CN211571358U CN 211571358 U CN211571358 U CN 211571358U CN 201922266964 U CN201922266964 U CN 201922266964U CN 211571358 U CN211571358 U CN 211571358U
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- 238000010276 construction Methods 0.000 abstract description 3
- 238000005452 bending Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000452 restraining effect Effects 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a through tied arch bridge of increasing girder transverse rigidity, including rib, hunch seat, girder, the hoist cable of connecting rib and girder, the rib is two and connects between the hunch seat of two rib and is provided with the horizontal tie beam of hunch seat, girder horizontal both sides are along the longitudinal direction of the bridge and are provided with the tie rod cable, the tie rod cable both ends are anchored in the hunch seat, be provided with the bracing piece between girder and the tie rod cable, the tie rod cable forms the horizontal spacing connection of a plurality of nodes through bracing piece and bridge floor tie main beam; when the main beam is transversely displaced under the action of external load, the rebound force opposite to the displacement direction of the main beam is provided to limit the transverse deformation of the main beam. Under the condition that the width of the bridge deck and the material consumption of the main beam are not required to be increased, the transverse rigidity of the main beam can be increased, the transverse amplitude is reduced, the stress form is reasonable, the material utilization rate is high, and the construction is convenient and rapid.
Description
Technical Field
The utility model relates to a bridge engineering field, concretely relates to increase girder transverse rigidity's through type tied arch bridge.
Background
The through tied arch bridge is a structural system for balancing horizontal thrust of arch springing by using tied cables, and has the characteristics of large spanning capacity and strong adaptability to basic conditions. The main arch of the through tied arch bridge has high rigidity in the vertical plane, and the main beam can easily meet the requirement of vertical rigidity by means of the vertical support provided by the sling. The main beam must have enough rigidity in the transverse bridge direction, if the transverse rigidity of the main beam is too small, the main beam can generate larger transverse deformation and amplitude under the action of external load, discomfort and unsafe feeling of drivers, passengers or pedestrians on the bridge are caused, and normal use is influenced, so that the transverse rigidity of the main beam must be controlled. The indexes for evaluating the transverse rigidity of the girder mainly comprise the width to span ratio of the girder, the transverse bending span ratio, the transverse natural vibration frequency, the transverse break angle of the girder end and the like. To ensure that the main beams have sufficient lateral stiffness, it is common practice to control the ratio of the width to the span of the main beams within a certain range. The pedestrian bridge, the railway bridge and the track bridge have the characteristic of narrow bridge deck, if the transverse rigidity of the main beam is ensured by singly adopting a method of increasing the width to span ratio of the main beam, the dead weight is increased, the structural efficiency is reduced, the material waste is caused, and the economic benefit is reduced.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention provides a through tied arch bridge with increased girder transverse rigidity, which utilizes arch compression under the condition of not increasing the width of the bridge deck and the amount of girder material, the tied rope is pulled to form a self-balancing stress system, the tied rope is under the action of horizontal thrust of the arch rib in a tightened state, and when the girder is under the action of external load, the through tied arch bridge provides a counter-elastic force opposite to the direction of girder displacement to limit the transverse deformation of the girder. Not only can increase girder transverse rigidity, reduce horizontal amplitude, the atress form is reasonable moreover, material utilization is high, construction convenience is swift.
The utility model discloses an increase girder transverse rigidity's through-put type tied arch bridge, including rib, hunch seat, girder, the hoist cable of connecting rib and girder the rib is two and connects between the hunch seat of two ribs and is provided with the horizontal tie beam of hunch seat, girder horizontal both sides are along the longitudinal bridge to being provided with the tie rod cable, the tie rod cable both ends are anchored in the hunch seat, be provided with the bracing piece between girder and the tie rod cable, the tie rod cable forms the horizontal spacing connection of a plurality of nodes through the bracing piece and girder;
further, a fixed support and a longitudinal movable support are respectively arranged below the arch seats at the two ends along the longitudinal bridge;
furthermore, one end of the support rod is fixedly connected with the main beam, and the other end of the support rod is movably connected with the tie bar cable;
furthermore, the tie rod cable is a flexible cable and is arranged parallel to the main beam and movably connected with the support rod in a manner of moving along the longitudinal bridge direction;
furthermore, the support rod is provided with an annular piece in sliding connection with the tie rod cable, and the annular piece is sleeved on the tie rod cable;
further, a sliding sleeve is arranged between the annular piece and the tie rod cable;
further, the sliding sleeve comprises an inner sliding sleeve fixedly arranged on the inner side wall of the annular piece and an outer sliding sleeve fixedly arranged on the surface of the tie rod rope and corresponding to the inner sliding sleeve, and the inner sliding sleeve and the outer sliding sleeve can slide relatively along the longitudinal bridge direction;
furthermore, the supporting rods form a plurality of triangular supporting structures between the tie rod cables and the main beam in the horizontal direction and the vertical direction, and the triangular supporting structures are connected in pairs in the horizontal direction;
furthermore, the triangular support structure consists of a side support rod I, a middle support rod II and a side support rod III which are connected with the same ring piece on the horizontal plane, and the connecting point of the middle support rod II and the main beam and the connecting points of the side support rod I and the side support rod III and the main beam are not on the same horizontal line;
furthermore, a plurality of cross braces which are distributed at equal intervals are arranged between the two arch ribs.
The utility model has the advantages that: the utility model discloses an increase girder transverse rigidity's through-put type tied arch bridge, under the condition that need not increase bridge floor width and girder material quantity, utilize to encircle the pressurized, tied rope is drawn and is formed the self-balancing atress system, tied rope is in the state of tightening under the effect of arch rib horizontal thrust, when the girder takes place lateral displacement under the effect of outer load, provides the bounce with girder displacement opposite direction to the lateral deformation of restriction girder. Not only can increase girder transverse rigidity, reduce horizontal amplitude, the atress form is reasonable moreover, material utilization is high, construction convenience is swift.
Drawings
The invention will be further described with reference to the following figures and examples:
fig. 1 is a schematic perspective view of the present invention;
FIG. 2 is a bottom end perspective view of the beam of FIG. 1;
FIG. 3 is an enlarged schematic view of the structure of FIG. 1A;
fig. 4 is an enlarged exploded view of fig. 3.
Detailed Description
The through tied arch bridge for increasing the transverse rigidity of the main beam comprises arch ribs 5, arch seats 7, a main beam 1, and slings 6 for connecting the arch ribs 5 and the main beam 1, wherein the arch ribs 5 are two arch seats 7 of which two arch ribs 5 are connected and provided with an arch seat transverse connecting beam 10, tie rods 2 are arranged on two horizontal sides of the main beam 1 along the longitudinal direction of the bridge, two ends of each tie rod 2 are anchored on the arch seats 7, a support rod 3 is arranged between the main beam 1 and the tie rods 2, and the tie rods 2 form transverse limiting connection of a plurality of nodes with the main beam 1 through the support rods 3; the arch abutment transverse connection beam 10 is used for connecting two arch abutments 7 at arch springing positions, two ends of the tie rod rope 2 are respectively fixed on the arch abutments 7 at two ends of the longitudinal bridge, and the tie rod rope 2 is pulled to form a self-balancing stress system by utilizing arch compression. The arch base is only a transition structure between an arch rib and a lower expanded foundation, the tie rod cables 2 and the main beams are connected with the tie rod cables 2 and the main beams 1 along the transverse bridge direction through a plurality of support rods 3 to form a plurality of node transverse limit connections, the tie rod cables are pulled to form a self-balancing stress system by utilizing the compression of the arch, the tie rod cables are in a tightened state under the action of the horizontal thrust of the arch rib, transverse stabilizing force and restraining action are provided for the main beams through tensioning the tie rod cables 2 and the support rods 3 which are tightened, transverse deformation and amplitude are reduced, and transverse deformation of the main beams 1 of the bridge deck system is limited, so that the transverse bridge direction bending rigidity of the main beams 1 of the bridge deck system is increased, and deformation and vibration generated by the tie rod cables 2 are. The tie bars 2 on both sides of the main beam 1 have the same diameter and the same tension.
In the embodiment, a fixed support 8 and a longitudinal movable support 11 are respectively arranged below the arch supports 7 at two ends along the longitudinal bridge direction; a fixed support 8 is arranged at one end below an arch support of the main arch, a longitudinal movable support 11 is arranged at the other end, horizontal thrust generated by arch ribs is completely borne by the tie rods 2, and the main beam 1 only bears bending moment. The fixed support 8 and the longitudinal movable support 11 are utilized to ensure that the horizontal thrust generated by the arch rib 5 is completely transmitted to the tie rod cable 2, the upper pendulums of the fixed support 8 and the longitudinal movable support 11 are connected with the arch support 7, the lower pendulums of the fixed support 8 and the longitudinal movable support 11 are connected with the foundation, the fixed support 8 and the longitudinal movable support 11 are connected with the arch support 7 through anchor bolts, and the upper pendulums and the lower pendulums of the longitudinal movable support 11 can move longitudinally. The fixed support 8 and the longitudinally movable support 11 are both prior art.
In the embodiment, one end of the support rod 3 is fixedly connected with the main beam 1, and the other end is movably connected with the tie bar cable 2; the movable connection of the support rod 3 and the tie rod cable 2 means that the support rod 3 and the tie rod cable 2 can move relative to each other after being connected, and is a movable connection relative to a fixed connection, and is a 'movement' under a connection relation, when the bridge generates larger transverse deformation and amplitude under the action of external load to cause transverse displacement, the tie rod cable 2 in a tightening state under the action of horizontal thrust of the arch rib provides a rebound force opposite to the displacement direction of the main beam through the support rod 3 to limit the transverse deformation of the main beam. The movable connection can avoid abrasion or damage between the support rod 3 and the tie rod cable 2 caused by stress concentration. And the support rods 3 and the bridge deck system main beam 1 must be fixedly connected, so that the bridge deck system main beam has enough structural rigidity. The support rods 3 can be fixed with the bridge deck girder 1 by using the existing fixing method, such as welding and the like. The lashing wire 2 and the support bar 3 may be fixedly connected, but this may cause stress concentrations and wear.
In this embodiment, the tie rod cable 2 is a flexible cable and is arranged parallel to the main beam 1, and is movably connected with the support rod 3 in a manner of moving along the longitudinal bridge direction; the tie rod rope 2 adopts a straight line, is parallel to the two sides of the main beam 1 and has the same distance with the edge of the main beam 1. That is, since the support bar 3 is fixedly connected to the main beam 1, the position of the support bar 3 is fixed, and therefore, the tie bar 2 and the support bar 3 can move in the longitudinal direction of the bridge in the connected state, and therefore, when the main beam 1 is loaded, the support bar 3 and the tie bar 2 fixed to the bridge are displaced from each other when the main beam 1 is deformed in the lateral direction.
In this embodiment, the support rod is provided with an annular member slidably connected to the tie rod cable 2, and the annular member is sleeved on the tie rod cable 2; the annular members 4 are spaced equidistantly along the tie-rod cord 2, the annular members 4 may be removably connected to the tie-rod cord 2, for example, by bolting, or the annular members 4 may be fixed to the tie-rod cord 2. The annular part 4 has simple structure, and is convenient for the support rod 3 and the tie rod cable 2 to generate relative displacement.
In this embodiment, a sliding sleeve is arranged between the annular member 4 and the tie rod cable 2; the sliding sleeve is convenient for the annular part 4 and the tie rod rope 2 to generate relative displacement under the stress condition, and in order to adapt to the structure of the annular part 4, the inner sliding sleeve is generally an arc-shaped plate and adapts to the inner wall of the annular part 4.
In this embodiment, the sliding sleeve includes an inner sliding sleeve 41 fixedly disposed on the inner sidewall of the annular member 4 and an outer sliding sleeve 21 fixedly disposed on the surface of the lanyard cable 2 and corresponding to the inner sliding sleeve 41, and the inner sliding sleeve 41 and the outer sliding sleeve 21 can slide relatively along the longitudinal bridge direction; the inner sliding sleeve 41 is fixed on the inner side wall of the annular piece 4, and the outer sliding sleeve 21 is fixed on the tie-rod cable 2, so that the transmission of force between the bridge deck system main beam 1 and the inner sliding sleeve is facilitated, and the rebound force is generated under the condition that the bridge deck system main beam 1 is loaded and acted, so that the transverse deformation and amplitude of the bridge deck system main beam 1 are reduced, the friction resistance between the annular piece 4 and the tie-rod cable 2 is reduced, and the abrasion between the annular piece 4 and the tie-rod cable 2. The outer diameter of the lashing wire 2 is slightly smaller than the inner diameter of the ring-shaped member 4, and the outer sliding sleeve 21 is provided in the range where the lashing wire 2 contacts the inner sliding sleeve 41 of the ring-shaped member 4.
In the embodiment, the support rods 3 form a plurality of triangular support structures between the tie rod ropes 2 and the bridge deck system main beam 1 in the horizontal direction and the vertical direction, and the triangular support structures are connected in pairs in the horizontal direction; that is to say, the connection joints between the support rods 3 and the tie bars 2 form a stable triangular structure, that is, a plurality of triangular structures formed by the mutual connection of the support rods 3 are arranged in the horizontal plane direction of the bridge deck system main beam 1, and the triangular structures are also formed between the support rods 3 connected with the bridge deck system main beam 1 and the tie bars 2 in the vertical direction, so that the structure is more stable, and can better provide the transverse stabilizing force and the restraining effect for the bridge deck system main beam 1.
In the embodiment, the triangular supporting structure consists of a side supporting rod I31, a middle supporting rod II 33 and a side supporting rod III 32 which are connected with the same ring-shaped piece 4 on the horizontal plane, and the connecting point of the middle supporting rod II 33 and the bridge deck system main beam 1 and the connecting points of the side supporting rod I31 and the side supporting rod III 32 and the bridge deck system main beam 1 are not on the same horizontal line; as shown in the figure, for the ring-shaped member 4 at A, the side supporting rod I31, the middle supporting rod II 33 and the side supporting rod III 32 are connected together to form a triangular supporting structure formed by the ring-shaped member 4, the side supporting rod I31 and the side supporting rod III 32 are respectively used as the side length of a triangle, the connecting points of the side supporting rod I31 and the side supporting rod III 32 and the bridge deck system girder 1 are positioned on the same horizontal line, the connecting point of the middle supporting rod 3 II and the bridge deck system girder 1 and the connecting points of the side supporting rod I31 and the side supporting rod III 32 and the bridge deck system girder 1 are not positioned on, the side supporting rods I31 and III 32 are connected with the supporting rods 3 which are used as the side length of the adjacent triangular supporting structures, therefore, in the vertical direction of the bridge deck system main beam 1, the side supporting rods I31, the side supporting rods III 32 and the middle supporting rods II 33 form a triangular structure in the vertical direction respectively. And each ring-shaped part 4 is connected with three supporting rods 3, and the supporting rods 3 of the adjacent ring-shaped parts 4 are connected with each other, so that the structure is more stable.
In this embodiment, the tie rod cable 2 is a flexible cable, and the support rod 3 is a rigid member; the ring-shaped member 4 is connected and fixed by adopting a nut and a screw, and has the advantages of simple structure, convenience, practicability, high structural strength and good stability. The number of the arch ribs 5 is two, and a cross brace 9 is arranged between the two arch ribs 5 so as to ensure the stability of the main arch.
Finally, the above embodiments are only used for illustrating the technical solutions of the present embodiments and not for limiting, and although the present embodiments are described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present embodiments without departing from the spirit and scope of the technical solutions of the present embodiments, which should be covered by the claims of the present embodiments.
Claims (10)
1. Increase girder transverse rigidity's through type tied arch bridge, its characterized in that: the bridge comprises arch ribs, arch seats, a main beam and slings for connecting the arch ribs and the main beam, wherein the arch ribs are two arch seats, an arch seat transverse connecting beam is connected between the two arch ribs, tie rod cables are arranged on the two horizontal sides of the main beam along the longitudinal bridge direction, the two ends of each tie rod cable are anchored on the arch seats, supporting rods are arranged between the main beam and the tie rod cables, and the tie rod cables are in transverse limiting connection with the main beam through the supporting rods to form a plurality of nodes.
2. The through bowstring arch bridge for increasing the transverse rigidity of the main beam according to claim 1, wherein: and a fixed support and a longitudinal movable support are respectively arranged below the arch seats at the two ends along the longitudinal bridge direction.
3. The through bowstring arch bridge for increasing the transverse rigidity of the main beam according to claim 1, wherein: one end of the support rod is fixedly connected with the main beam, and the other end of the support rod is movably connected with the tie bar cable.
4. The through bowstring arch bridge for increasing the transverse rigidity of the main beam according to claim 3, wherein: the tie rod cable is a flexible cable and is arranged parallel to the main beam and movably connected with the support rod in a mode of moving along the longitudinal bridge direction.
5. The through bowstring arch bridge for increasing the transverse rigidity of the main beam according to claim 4, wherein: the support rod is provided with an annular piece in sliding connection with the tie rod cable, and the annular piece is sleeved on the tie rod cable.
6. The through bowstring arch bridge for increasing the lateral rigidity of a main beam according to claim 5, wherein: and a sliding sleeve is arranged between the annular piece and the tie rod cable.
7. The through bowstring arch bridge for increasing the lateral rigidity of a main beam according to claim 6, wherein: the sliding sleeve comprises an inner sliding sleeve fixedly arranged on the inner side wall of the annular piece and an outer sliding sleeve fixedly arranged on the surface of the tie rod cable and corresponding to the inner sliding sleeve, and the inner sliding sleeve and the outer sliding sleeve can slide relative to each other along the longitudinal bridge direction.
8. The through bowstring arch bridge for increasing the lateral rigidity of a main beam according to claim 7, wherein: the supporting rods form a plurality of triangular supporting structures between the tie rod ropes and the main beam in the horizontal direction and the vertical direction, and the triangular supporting structures are connected in pairs in the horizontal direction.
9. The through bowstring arch bridge for increasing transverse stiffness of a main beam according to claim 8, wherein: the triangular supporting structure is composed of a side supporting rod I, a middle supporting rod II and a side supporting rod III which are connected with the same ring-shaped piece on the horizontal plane, and the connecting point of the middle supporting rod II and the bridge deck system main beam and the connecting points of the side supporting rod I and the side supporting rod III and the bridge deck system main beam are not on the same horizontal line.
10. The through bowstring arch bridge for increasing the transverse rigidity of the main beam according to claim 1, wherein: and a plurality of cross braces which are distributed at equal intervals are arranged between the two arch ribs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922266964.1U CN211571358U (en) | 2019-12-17 | 2019-12-17 | Through tied arch bridge for increasing transverse rigidity of main beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922266964.1U CN211571358U (en) | 2019-12-17 | 2019-12-17 | Through tied arch bridge for increasing transverse rigidity of main beam |
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| Publication Number | Publication Date |
|---|---|
| CN211571358U true CN211571358U (en) | 2020-09-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922266964.1U Withdrawn - After Issue CN211571358U (en) | 2019-12-17 | 2019-12-17 | Through tied arch bridge for increasing transverse rigidity of main beam |
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| CN (1) | CN211571358U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110878516A (en) * | 2019-12-17 | 2020-03-13 | 林同棪国际工程咨询（中国）有限公司 | Through tied arch bridge for increasing transverse rigidity of main beam |
-
2019
- 2019-12-17 CN CN201922266964.1U patent/CN211571358U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110878516A (en) * | 2019-12-17 | 2020-03-13 | 林同棪国际工程咨询（中国）有限公司 | Through tied arch bridge for increasing transverse rigidity of main beam |
| CN110878516B (en) * | 2019-12-17 | 2024-06-21 | 林同棪国际工程咨询（中国）有限公司 | Lower-bearing type tied-arch bridge for increasing transverse rigidity of main girder |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20200925 Effective date of abandoning: 20240621 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20200925 Effective date of abandoning: 20240621 |