CN209941469U - Steel box girder thin-wall pier rigid frame cable-stayed bridge suitable for straddle type monorail - Google Patents

Steel box girder thin-wall pier rigid frame cable-stayed bridge suitable for straddle type monorail Download PDF

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Publication number
CN209941469U
CN209941469U CN201920400398.6U CN201920400398U CN209941469U CN 209941469 U CN209941469 U CN 209941469U CN 201920400398 U CN201920400398 U CN 201920400398U CN 209941469 U CN209941469 U CN 209941469U
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steel
pier
thin
bridge
wall
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CN201920400398.6U
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Inventor
李靖
彭华春
瞿国钊
耿杰
马明
陈名欢
谢晓慧
刘阳明
韩稼春
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China Railway Siyuan Survey and Design Group Co Ltd
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China Railway Siyuan Survey and Design Group Co Ltd
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Abstract

The utility model discloses a steel box girder thin-wall pier rigid-structure cable-stayed bridge suitable for straddle type monorail, comprising a bearing platform foundation (1), wherein the bearing platform foundation (1) is arranged along the longitudinal direction of the bridge at intervals and is correspondingly provided with a pier above the top part of the bearing platform foundation, the pier comprises a side pier and a middle pier, the top part of the pier is longitudinally provided with a steel girder (3), each middle pier top part is respectively provided with a bridge tower (4) above the steel girder (3) in the transverse direction, the bridge tower (4) is provided with a cable fixing end for fixing one end of a stay cable (6), and the other end of the stay cable (6) is sequentially fixed on the steel girder (3) at the longitudinal two sides of the bridge tower (4); the middle pier is at least two thin-wall piers (2) which are arranged at intervals along the bridge direction, a pier beam consolidation system is adopted between the top of the middle pier and the steel main beam (3) to form a stressed integrated rigid frame structure, and the system meets the requirement of the straddle type single rail on the rigidity of the bridge and simultaneously releases the longitudinal temperature force of the steel main beam.

Description

Steel box girder thin-wall pier rigid frame cable-stayed bridge suitable for straddle type monorail
Technical Field
The utility model belongs to the technical field of the track traffic bridge structures, more specifically relates to a steel case roof beam thin wall mound rigid frame cable-stay bridge suitable for straddle type is single.
Background
The straddle type monorail transit is one of urban rail transit, and the straddle type monorail has the advantages of good landscape, low manufacturing cost, low noise and the like, so that the construction period of the straddle type monorail transit is usually not half of that of a subway, the manufacturing cost is about one third of that of the subway, but the straddle type monorail transit belongs to a rail transit system with medium traffic volume, and the urban traffic problem can be improved to a great extent. At present, domestic three-line and four-line cities are very hot for straddle type monorail traffic, and a plurality of cities are planning and constructing monorail traffic, so that the three-line and four-line city straddle type monorail traffic has great market potential.
Because straddle type monorail transit has certain difference with current ordinary rail transit, consequently current rail transit bridge can't be fully suitable for straddle type monorail, and to straddle type monorail bridge, still do not have ripe technical standard at present for straddle type monorail bridge for the bridge that is applicable to straddle type monorail has certain degree of difficulty in the design. Straddle monorail imposes strict requirements on vertical rigidity and transverse rigidity,
a straddle type single-track beam is used as a beam-track integrated bridge structure and needs to meet the requirements of bearing train load and the linear shape of train running at the same time. Because the cross section of the straddle type monorail is small in size and limited in span, in the prior art, a beam-on-beam structure is generally adopted if the requirement of large span is required to be met, namely, a joist is arranged below a track beam to serve as a track beam supporting platform, and the structural forms of common joists include a simply supported beam, a continuous rigid frame and the like; if need the span need adopt cable-stay bridge when bigger again, because girder steel structure is light and handy, and the leap ability is strong, construction speed is fast, can regard as cable-stay bridge's girder material, but when adopting the steel construction girder, cable-stay bridge rigidity is lower, often uses to improve the bulk rigidity through doing high girder among the prior art, and is extravagant relatively, and the view is relatively poor.
SUMMERY OF THE UTILITY MODEL
To the above defect of prior art or improve the demand, the utility model provides a be applicable to and stride a single-rail steel case roof beam thin wall mound rigid frame cable-stay bridge, its aim at, the bulk rigidity that both can improve cable-stay bridge satisfies striding a single track requirement to bridge rigidity, can ensure temperature effect again at controllable within range, satisfies the release of steel construction girder to temperature stress.
For realizing above-mentioned purpose, provide a steel box girder thin wall mound rigid-frame cable-stay bridge suitable for stride a formula single track, including the cushion cap basis, this cushion cap basis sets up and its top correspondence along bridge longitudinal separation is equipped with pier, its characterized in that:
the bridge pier comprises side piers arranged at two ends of a cable-stayed bridge and middle piers arranged between the side piers, a steel main beam is longitudinally arranged at the top of the bridge pier, a bridge tower is arranged at two sides above the steel main beam in the transverse direction corresponding to the top of each middle pier, cable fixing ends are arranged at the upper part of the bridge tower along the central axis at intervals and used for fixing one end of a stay cable, and the other end of the stay cable is sequentially fixed on the steel main beams at two sides of the bridge tower in the longitudinal direction; wherein the content of the first and second substances,
the middle pier is at least two thin-wall piers which are arranged at intervals along the bridge direction, and a pier beam consolidation system is adopted between the top of the middle pier and the steel main beam to form a rigid frame structure with integral stress between the middle pier and the steel main beam.
Furthermore, the lower end of the steel main beam is provided with a steel column leg corresponding to the thin-wall pier, the top of the steel column leg extends into the steel main beam and is fixedly connected with the steel main beam, and the bottom end of the steel column leg is arranged in the pier body of the thin-wall pier.
Furthermore, the distances between the steel column legs and the corresponding pier walls of the thin-wall piers at the two longitudinal ends of the steel column legs are the same, and the bottom of each steel column leg is separated from the bottom of each thin-wall pier by a certain distance.
Furthermore, stiff frameworks are arranged on the steel column legs along the two longitudinal sides and are formed by welding multiple sections, stiffening structures are arranged on the inner sides of the stiff frameworks at certain intervals, and concrete is poured around the stiffening structures.
Furthermore, the bottom of the stiff skeleton is correspondingly welded with flange plates with the same cross section size, bolt holes are reserved in the flange plates at intervals, and the bolt holes are arranged in the flange plates at intervals between the stiffening structures.
Furthermore, the flange plate is fixedly connected with the surrounding concrete through bolts, one ends of the bolts penetrate through and are fixed in the bolt holes, and the other ends of the bolts are fixed in the concrete at the bottom of the flange plate.
Furthermore, the flange plate and the surrounding concrete are fixedly connected through embedded steel bars, the embedded steel bars are arranged between the bolts which are longitudinally adjacent, and one end of each embedded steel bar is fixed to the bottom of the flange plate.
Furthermore, a steel bar through hole is reserved in the bottom plate of the steel main beam corresponding to the top of the thin-wall pier, and part or all of the steel bars on the outer side of the top section of the thin-wall pier penetrate through the steel bar through hole and are fixed with the concrete.
Further, the steel girder comprises a side span and a mid-span, the side span is a beam section between the side piers on two sides and the tops of the adjacent middle piers, and the mid-span is a beam section arranged between the tops of the middle piers.
Further, the thickness of the steel main beam positioned at the top of the middle pier is larger, and the thickness of the steel main beam is gradually reduced from the middle pier to the longitudinal two sides.
Generally, through the utility model discloses above technical scheme who conceives compares with prior art, can gain following beneficial effect:
(1) the steel box girder thin-wall pier rigid frame cable-stayed bridge suitable for the straddle type monorail of the utility model adopts the reinforced concrete pier at first, and can provide enough horizontal rigidity; and then, the steel column legs are arranged in the steel box girder and the bridge pier simultaneously in a mode of concreting the bridge pier and the steel structure girder, and can smoothly transmit the internal force of the steel box girder to each concrete thin-wall pier, so that the bridge pier and the concretion part of the steel box girder form a rigid structure with integrated stress, and the integral rigidity of the cable-stayed bridge is improved to meet the requirement of the straddle type monorail on the rigidity of the bridge.
(2) The utility model discloses a steel case roof beam thin wall mound rigid frame cable-stay bridge suitable for straddle type single track adopts the mode of improving a pier for a plurality of thin wall mounds, can effectively support upper portion steel girder structure on the one hand, and on the other hand because the steel construction is sensitive to the temperature effect, can weaken the temperature effect that the part vertically resists to push away rigidity and reduce the steel structure girder again, furthest's release steel girder's vertical temperature power.
(3) The utility model discloses a be applicable to single-track steel case roof beam thin wall mound rigid frame cable-stay bridge of straddle type, the position that steel case roof beam lower extreme corresponds the thin wall mound is equipped with the steel column leg, plays the supporting role of steel case roof beam during the construction, has the hoist and mount that utilize the mound roof beam concreties section steel case roof beam, and adopts the shear force nail to be connected with the concrete on the steel column leg, is favorable to strengthening the steel-concrete faying face degree of bonding.
(4) The utility model discloses a be applicable to single-track steel case roof beam thin wall mound rigid frame cable-stay bridge strides, bolt and embedded steel bar on the ring flange are passed through to steel column leg bottom, have ensured that the connection of steel column leg and concrete is more reliable, and the reinforcing bar clearing hole that steel girder bottom plate set up, can strengthen the contact of stretching into concrete and pier in the steel girder, make overall stability stronger.
(5) The steel box girder thin-wall pier rigid frame cable-stayed bridge suitable for the straddle type monorail of the utility model adopts a cable-stayed bridge structure, which is beneficial to increasing the main span of the bridge and can realize the span which can not be reached by the straddle type monorail track girder; and the steel structure main beam is prefabricated and assembled, so that the construction speed is improved.
Drawings
FIG. 1 is a schematic structural view of a steel box girder thin-wall pier rigid cable-stayed bridge suitable for a straddle type monorail in an embodiment of the present invention;
fig. 2 is a partially enlarged view of the area a in fig. 1 according to an embodiment of the present invention;
fig. 3 is a partial schematic view of the section 1-1 in fig. 2 according to the embodiment of the present invention;
fig. 4 is a partial schematic view of the cross section 2-2 of fig. 2 according to the embodiment of the present invention;
fig. 5 is a partial enlarged view of the area B in fig. 2 according to the embodiment of the present invention;
fig. 6 is a schematic view of a steel main beam bottom plate at a joint of a concrete thin-wall pier and a steel main beam according to an embodiment of the present invention;
in all the figures, the same reference numerals denote the same features, in particular: 1-bearing platform foundation, 2-thin wall pier, 3-steel main beam, 4-bridge tower, 5-track beam, 6-stay cable and 7-steel column leg; 201-concrete; 301-steel main beam outer contour, 302-steel bar through hole; 701-a stiff skeleton, 702-a flange plate, 703-bolt holes, 704-bolts and 705-embedded steel bars.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention. Furthermore, the technical features mentioned in the embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.
Fig. 1 is the embodiment of the utility model provides a steel case roof beam thin wall mound rigid cable-stayed bridge structural sketch suitable for straddle type single track. As shown in figure 1, the steel box girder thin-wall pier rigid-frame cable-stayed bridge suitable for the straddle type monorail comprises a bearing platform foundation 1, thin-wall piers 2, a steel main girder 3, a bridge tower 4, a track beam 5 and a stay cable 6. Wherein, cushion cap basis 1 sets up and every cushion cap basis 1's top correspondence is equipped with the pier along the bridge to longitudinal separation, and the pier is including dividing the side mound of locating cable-stay bridge both ends and setting up the well mound between the side mound, and wherein the well mound is two at least thin wall mounds 2 of following the bridge to interval arrangement. And a steel girder 3 is longitudinally arranged at the top of the pier. Steel girder 3 includes side span and midspan, and the side span is the side mound of both sides and the girder segment between the mound top in adjacent with, and the midspan is the girder segment that sets up between the mound top in, and wherein, the thickness of the steel girder 3 that is located the mound top in is great, reduces to the thickness of both sides steel girder 3 from the mound gradually to satisfy the atress needs of fulcrum department. A pier beam consolidation system is adopted between the top of the middle pier and the steel main beam 3, and the middle pier and the steel main beam 3 are stressed integrally. The top of the steel girder 3 is provided with a track beam 5 along the bridge direction, the longitudinal length of the track beam 5 corresponding to the steel girder 3, the longitudinal length of the steel girder and the distance between the side piers at two ends are consistent, the end parts of the two longitudinal ends of the track beam 5 are arranged above the top of the side piers, and the end parts of the two longitudinal ends are respectively butted with the end parts of a standard track beam.
Firstly, the two transverse sides above the steel main beam 3, namely the two transverse sides of the bridge, are provided with a bridge tower 4 corresponding to the top of each middle pier, wherein the lower part of each bridge tower 4 is provided with a plurality of tower columns; the longitudinal width of the tower is the same as the longitudinal width of the corresponding thin-walled pier 2. The upper part of the bridge tower 4 is a continuous integral structure, stay cable fixing ends are arranged along the central axis of the bridge tower 4 at the same distance, one end of a stay cable 6 is fixed at the stay cable fixing end, the other end of the stay cable 6 is sequentially fixed on the steel main beams 3 at the two longitudinal sides of the bridge tower 4, and the distances between the fixing ends of the stay cable 6 on the steel main beams 3 are the same; the stayed cables 6 on the two transverse sides of the bridge deck are symmetrically and parallelly arranged.
The utility model is suitable for a steel case roof beam thin wall mound rigid frame cable-stay bridge of straddle type monorail, adopts the cable-stay bridge structure, is favorable to increasing the bridge owner and strides, can realize the span that the straddle type monorail track roof beam can't reach; and the steel structure main beam is prefabricated and assembled, so that the construction speed is improved.
Fig. 2 is a partially enlarged view of the area a referred to in fig. 1 of the embodiment of the present invention, i.e. a schematic diagram of a joint section of a concrete thin-wall pier and a steel girder. With reference to fig. 1, the scheme of arranging two thin-wall piers in a pier is illustrated, the top of each thin-wall pier 2 is level with the top of a steel main beam 3, steel column legs 7 are arranged at the positions of the lower end of the steel main beam 3, which correspond to the thin-wall piers 2, so that the steel main beam 3 is supported during construction, and the steel main beam 3 is hoisted by utilizing the pier beam consolidation sections. And the steel column legs 7 are connected with the concrete 2 by shear nails, which is beneficial to enhancing the bonding degree of the steel-concrete junction surface. The top of the steel column leg 7 extends into the steel main beam 3, and the top height thereof is positioned a certain distance above the outer contour 301 of the steel main beam; the bottom ends of the steel column legs 7 are arranged in the pier body of the thin-wall pier 2, and the vertical height of the steel column legs 7 in the thin-wall pier 2 is greater than that of the steel main beam 3; the steel column legs 7 are respectively the same as the distance between the pier wall of the corresponding thin-wall pier 2 at the two longitudinal ends of the thin-wall pier 2; the bottom of the steel leg 7 is spaced from the bottom of the thin-walled pier 2 by a certain distance. In addition, concrete 201 in thin-walled pier 2 extends into steel main beam 3. The utility model discloses a mode that the beam pier concreties, steel column leg set up simultaneously in steel case roof beam and thin wall mound, and on steel column leg can transmit each concrete thin wall mound with the internal force of steel case roof beam smoothly, make pier and steel case roof beam both form the integrative rigid frame structure of atress, in order to satisfy the requirement of striding a formula single track to bridge rigidity under the circumstances of guaranteeing to stride ability and construction progress. Simultaneously the utility model discloses a improve the mode of a pier for a plurality of thin wall mounds, can effectively support upper portion steel girder structure on the one hand, on the other hand because the steel construction is sensitive to temperature effect, can weaken the temperature effect that the vertical anti rigidity of pushing away of part reduces the steel construction girder again, furthest's release steel girder's vertical temperature power.
Further, fig. 3 is a partial schematic view of a section 1-1 related to fig. 2, and fig. 4 is a partial schematic view of a section 2-2 related to fig. 2 according to an embodiment of the present invention. Both fig. 3 and 4 are embodied in thin-walled pier transverse widths of 1/2. As can be seen in fig. 3 and 4, the thin-walled piers 2 have the same transverse width, are parallel to each other and have both ends flush with each other. As shown in fig. 3, stiff frameworks 701 are arranged on the steel column legs 7 along the two longitudinal sides, the stiff frameworks 701 are formed by transversely welding multiple sections, stiffening structures are arranged on the inner sides of the stiff frameworks 701 at certain intervals, and concrete 201 is poured around the stiffening structures. The transverse end of the stiff skeleton 701 is spaced a certain distance from the corresponding pier wall of the thin-walled pier 2. It can also be seen that stiff frames 701 are of the same transverse width, parallel to each other and flush at both ends. As shown in fig. 4, the bottom of the stiff skeleton 701 is welded with flange plates 702 having the same cross-section size, bolt holes 703 are reserved at intervals on the flange plates 702 for bolts to pass through, and the bolt holes 703 are arranged between stiffening structures arranged at intervals on the flange plates 702.
Further, fig. 5 is a partial enlarged view of a region B related in fig. 2 according to an embodiment of the present invention. Referring to fig. 4, after the steel box girder at the connection section with the thin-wall pier 2 is hoisted in place, the steel box girder is fixed by the flange plate 702 at the bottom, and the steel column legs can smoothly transmit the internal force of the steel box girder to the pier. The flange plate 702 at the bottom of the stiff skeleton 701 is fixedly connected with the concrete 201 in the steel column leg 2 through a bolt 704 and an embedded steel bar 705. One end of a bolt 704 penetrates through and is fixed to a reserved bolt hole 703 on the flange plate 702, and the other end of the bolt is fixed in the concrete 201 at the bottom of the flange plate 702; the embedded steel bars 705 are arranged between the longitudinally adjacent bolts, and one end of each embedded steel bar is fixedly connected with the bottom of the flange plate 702. The utility model discloses a bolt and embedded bar on the ring flange are passed through to steel column leg bottom, have ensured that the connection of steel column leg and concrete is more reliable.
Fig. 6 is a schematic view of a steel main beam bottom plate at a joint section of a concrete thin-wall pier and a steel main beam according to an embodiment of the present invention. Referring to fig. 1-4, L1 is the transverse width of the 1/2 steel girders 3 and L2 is the transverse width of the 1/2 thin-walled pier 2. The steel bar passing hole 302 is reserved in the position, corresponding to the top of the thin-wall pier 2, of the bottom plate of the steel main beam 3, and the steel bar part or the whole part of the steel bar outside the top section of the thin-wall pier 2 passes through the steel bar passing hole 302 as required and is fixedly connected with concrete 201 in the main beam and used for reinforcing connection between concrete in the steel box girder at the pier-beam connection position and the thin-wall pier. The utility model discloses a reinforcing bar clearing hole of steel girder bottom plate setting can strengthen stretching into the contact of concrete and pier in the steel girder, makes overall stability stronger.
It will be understood by those skilled in the art that the foregoing is merely a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included within the scope of the present invention.

Claims (10)

1. The utility model provides a steel case roof beam thin wall mound rigid frame cable-stay bridge suitable for stride a formula single track, includes cushion cap basis (1), this cushion cap basis (1) sets up and its top correspondence is equipped with pier, its characterized in that along bridge longitudinal separation:
the bridge pier comprises side piers arranged at two ends of a cable-stayed bridge and middle piers arranged between the side piers, a steel main beam (3) is longitudinally arranged at the top of the bridge pier, a bridge tower (4) is arranged at two sides above the steel main beam (3) in the transverse direction corresponding to the top of each middle pier, cable fixing ends are arranged at the upper part of the bridge tower (4) along the central axis at intervals and used for fixing one end of a stay cable (6), and the other end of the stay cable (6) is sequentially fixed on the steel main beams (3) at two longitudinal sides of the bridge tower (4); wherein the content of the first and second substances,
the middle pier is at least two thin-wall piers (2) which are arranged at intervals along the bridge direction, a pier beam consolidation system is adopted between the top of the middle pier and the steel main beam (3), and a rigid structure with integral stress between the middle pier and the steel main beam (3) is formed.
2. The steel box girder thin-wall pier rigid-frame cable-stayed bridge suitable for the straddle-type monorail according to claim 1, wherein a steel column leg (7) is arranged at the position, corresponding to the thin-wall pier (2), of the lower end of the steel main girder (3), the top of the steel column leg (7) extends into the steel main girder (3) and is fixedly connected with the steel main girder, and the bottom end of the steel column leg is arranged in the pier body of the thin-wall pier (2).
3. The steel box girder thin-wall pier rigid-frame cable-stayed bridge suitable for the straddle-type monorail according to claim 2, characterized in that the steel column legs (7) are respectively at the longitudinal ends of the same distance with the pier walls of the corresponding thin-wall piers (2), and the bottom of the steel column legs (7) are separated from the bottom of the thin-wall piers (2) by a certain distance.
4. The steel box girder thin-wall pier rigid-frame cable-stayed bridge suitable for the straddle-type monorail according to claim 2 or 3, characterized in that a stiff framework (701) is arranged on the steel column legs (7) along the longitudinal two sides, the stiff framework (701) is formed by welding multiple sections, stiffening structures are arranged on the inner sides of the stiff framework at certain intervals in the transverse direction, and concrete (201) is poured around the stiff framework.
5. The steel box girder thin-wall pier rigid-frame cable-stayed bridge suitable for the straddle monorail according to claim 4, wherein flange plates (702) with the same cross section size are welded at the bottom of the stiff skeleton (701) correspondingly, bolt holes (703) are reserved in the flange plates (702) at intervals, and the bolt holes (703) are arranged between the stiffening structures arranged on the flange plates (702) at intervals.
6. The steel box girder thin-wall pier rigid frame cable-stayed bridge suitable for the straddle monorail according to claim 5, characterized in that the flange (702) is fixedly connected with the surrounding concrete (201) through bolts (704), one end of each bolt (704) penetrates through and is fixed in the bolt hole (703), and the other end of each bolt is fixed in the concrete (201) at the bottom of the flange (702).
7. The steel box girder thin-wall pier rigid frame cable-stayed bridge suitable for the straddle monorail according to claim 5 or 6, wherein the flange (702) is fixedly connected with the surrounding concrete (201) through embedded steel bars (705), the embedded steel bars (705) are arranged between the longitudinally adjacent bolts (704), and one end of each embedded steel bar is fixed to the bottom of the flange (702).
8. The steel box girder thin-wall pier rigid-frame cable-stayed bridge suitable for the straddle-type monorail according to claim 7, characterized in that a steel bar through hole (302) is reserved on a bottom plate of the steel main girder (3) corresponding to the top position of the thin-wall pier (2), and part or all of steel bars on the outer side of the top section of the thin-wall pier (2) penetrate through the steel bar through hole (302) and are fixed with the concrete (201).
9. The steel box girder thin-wall pier rigid-frame cable-stayed bridge suitable for the straddle-type monorail according to claim 1 or 2, characterized in that the steel girder (3) comprises a side span and a mid-span, wherein the side span is a beam section between two side piers and the tops of adjacent middle piers, and the mid-span is a beam section arranged between the tops of the middle piers.
10. The steel box girder thin-wall pier rigid-frame cable-stayed bridge suitable for the straddle-type monorail according to claim 1 or 2, characterized in that the thickness of the steel main girder (3) at the top of the middle pier is larger, and the thickness of the steel main girder (3) is gradually reduced from the middle pier to two longitudinal sides.
CN201920400398.6U 2019-03-27 2019-03-27 Steel box girder thin-wall pier rigid frame cable-stayed bridge suitable for straddle type monorail Withdrawn - After Issue CN209941469U (en)

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CN201920400398.6U CN209941469U (en) 2019-03-27 2019-03-27 Steel box girder thin-wall pier rigid frame cable-stayed bridge suitable for straddle type monorail

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Application Number Priority Date Filing Date Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109930469A (en) * 2019-03-27 2019-06-25 中铁第四勘察设计院集团有限公司 A kind of rigid structure cable-stayed bridge of steel box-girder Thin-Wall Piers suitable for straddle-type monorail

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109930469A (en) * 2019-03-27 2019-06-25 中铁第四勘察设计院集团有限公司 A kind of rigid structure cable-stayed bridge of steel box-girder Thin-Wall Piers suitable for straddle-type monorail
CN109930469B (en) * 2019-03-27 2023-12-15 中铁第四勘察设计院集团有限公司 Steel box girder thin-wall pier rigid frame cable-stayed bridge suitable for straddle type monorail

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