Pedestrian overpass adopting spatial cable-strut support structure and setting semi-rigid tensioned canopy structure

Abstract

The application belongs to the technical field of fabricated buildings, and particularly relates to a pedestrian overpass adopting a space cable-strut support structure and provided with a semi-rigid tensioned canopy structure, which has a cable-strut support self-balancing bridge deck system and a semi-rigid tensioned canopy structure. The cable-strut support self-balancing bridge deck system has a pressure-bearing bridge deck and a space cable-strut support structure arranged below the pressure-bearing bridge deck. The semi-rigid tensioned canopy structure has a rigid fish-belly suspended truss, a flexible cable net structure system, vertical support members and floor cable members. The vertical support members have A-shaped support columns, swing support columns and end support columns, two A-shaped support columns and two swing support columns are connected between the rigid suspended truss and the pressure-bearing bridge deck, the bottom end of the swing support column is hinged to the pressure-bearing bridge deck, the end support column is arranged outside the swing support column, and the top end of the swing support column is connected to the top end of the end support column. The application realizes a light and transparent building appearance.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of prefabricated buildings, and in particular relates to a pedestrian overpass adopting a space cable-strut support structure and provided with a semi-rigid tensioned canopy structure. BACKGROUND

[0002] The existing pedestrian overpass structure is usually single in style under normal conditions and is mostly of an open type structure, and the overall building appearance and use function still need to be improved, which is specifically explained as follows:

[0003] There is a common pedestrian overpass style in the prior art that adopts an open type structure, which is commonly a single-span or multi-span structure form adopting a monolithic box section support. This type of pedestrian overpass structure is simple in shape, convenient to build, and controllable in cost, and is relatively suitable for most conventional application occasions. However, this type of pedestrian overpass is severely lacking in architectural expression flexibility when selected in core blocks, landmark sites and other areas due to its overly unified and simplified architectural shape features, and the application range is greatly limited. Moreover, the open type bridge body structure lacks sheltering function for adverse weather such as rain and snow, and the building use function is relatively limited.

[0004] There is another common pedestrian overpass style in the prior art that adopts a closed type structure, which is commonly a truss type spanning structure form with a full-height layer, and the truss height serves as a pedestrian gallery space and simultaneously provides a structural span support structure. This type of pedestrian overpass has sheltering function for adverse weather such as rain and snow, and the pedestrian use quality is improved; however, the relatively fixed truss appearance and closed external visual perception limit the architectural shape features of the overpass, and the applicability is limited when considering architectural appearance requirements and other specific conditions.

[0005] In summary, the existing pedestrian overpass structure style is relatively traditional and monotonous, and there is no effective solution to the comprehensive needs of closed sheltering in adverse weather, flexible and beautiful architectural appearance, and light and transparent canopy style. SUMMARY

[0006] In view of the above analysis, the embodiments of the present application aim to provide a pedestrian overpass adopting a space cable-strut support structure and provided with a semi-rigid tensioned canopy structure, so as to solve at least one of the above problems in the prior art.

[0007] The purpose of the present application is achieved as follows:

[0008] A pedestrian overpass adopting a space cable-strut support structure and provided with a semi-rigid tensioned canopy structure, comprising:

[0009] The cable-strut support self-balancing bridge deck system has a pressure-bearing bridge deck and a space cable-strut support structure arranged below the pressure-bearing bridge deck;

[0010] The semi-rigid tensile canopy structure has a rigid fish belly suspended truss, a flexible cable net structure system, vertical support members and floor cable members; the flexible cable net structure system is connected to the rigid suspended truss; the vertical support members have A-shaped support columns, swing support columns and end support columns, two A-shaped support columns and two swing support columns are connected between the rigid suspended truss and the bearing bridge deck, and the two A-shaped support columns are located between the two swing support columns; the top end of the swing support column is connected to the end of the rigid suspended truss, and the bottom end of the swing support column is hinged to the bearing bridge deck; the end support column is arranged outside the swing support column, and the top end of the swing support column is connected to the top end of the end support column; and the floor cable members are connected to the top end of the end support column.

[0011] Further, the bearing bridge deck comprises a steel beam structure and a cast-in-place bridge deck slab arranged above the steel beam structure; the steel beam structure has an upper chord structure, and the upper chord structure is connected with the bearing cables and the support web members to form a spatial cable-strut support structure.

[0012] Further, the spatial cable-strut support structure is arranged in multiple bays.

[0013] Further, the steel beam structure comprises a plurality of main beams, and a plurality of secondary beams are vertically connected between adjacent two main beams; the adjacent two main beams and the secondary beams therebetween jointly constitute the upper chord structure of a spatial cable-strut support structure.

[0014] Further, the support web members are V-shaped support rods, the tips of the V-shaped support rods are connected with the bearing cables, and the two rod ends of the opening of the V-shaped support rod are connected to the connection positions of the secondary beams and the main beams.

[0015] Further, a tuned mass damper is arranged below the bearing bridge deck.

[0016] Further, the top end of the end support column is connected to a newly-built counter-force support structure or a counter-force support structure for existing structure reconstruction through the floor cable members.

[0017] Further, the flexible cable net structure system has ridge edge cables, large-span direction edge cables and distributed stabilizing cables; the top end of the swing support column is connected to the top end of the end support column through the ridge edge cables.

[0018] Further, an outwardly-extending short column is arranged on the A-shaped support column, the outwardly-extending short column is connected with the large-span direction edge cable, and is used for providing middle support for the large-span direction edge cable; the large-span direction edge cable is horizontal or approximately horizontal.

[0019] Further, the end support column and the swing support column are both inclined away from the A-shaped support column.

[0020] Compared with the prior art, the present application can at least achieve one of the following beneficial effects:

[0021] a) The footbridge provided by the application adopts the space cable-strut support structure and is provided with the semi-rigid tensile canopy structure, the internal force balance of the bearing cable, the support web and the bearing bridge deck is realized through the bearing bridge deck and the space cable-strut support structure below the bearing bridge deck, and the bridge deck system support structure is novel and efficient, the structural bearing mode is effectively improved, the structural bearing efficiency is improved, the appearance feature of the bridge deck system is improved, and materials are saved and the cost is controlled.

[0022] b) The footbridge provided by the application adopts the space cable-strut support structure and is provided with the semi-rigid tensile canopy structure, the internal force balance of the bearing cable, the support web and the bearing bridge deck is realized through the bearing bridge deck and the space cable-strut support structure below the bearing bridge deck, and the bridge deck system support structure is novel and efficient, the structural bearing mode is effectively improved, the structural bearing efficiency is improved, the appearance feature of the bridge deck system is improved, and materials are saved and the cost is controlled.

[0023] c) The footbridge provided by the application adopts the space cable-strut support structure and is provided with the semi-rigid tensile canopy structure, the internal force balance of the bearing cable, the support web and the bearing bridge deck is realized through the bearing bridge deck and the space cable-strut support structure below the bearing bridge deck, and the bridge deck system support structure is novel and efficient, the structural bearing mode is effectively improved, the structural bearing efficiency is improved, the appearance feature of the bridge deck system is improved, and materials are saved and the cost is controlled. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0025] Figure 1 The structure diagram of the footbridge provided by the application and adopting the space cable-strut support structure and provided with the semi-rigid tensile canopy structure Figure One ;

[0026] Figure 2 The structure diagram of the footbridge provided by the application and adopting the space cable-strut support structure and provided with the semi-rigid tensile canopy structure Figure Two ;

[0027] Figure 3 The structure diagram of the semi-rigid tensile canopy structure provided by the application

[0028] Figure 4 The structure diagram of the semi-rigid tensile canopy structure provided by the application and adopting the space cable-strut support structure and provided with the semi-rigid tensile canopy structure

[0029] Figure 5 The structure diagram of the footbridge provided by the application and adopting the space cable-strut support structure and provided with the semi-rigid tensile canopy structure

[0030] Figure 6The elevation schematic view of the string support self-balanced bridge deck system provided by the present application;

[0031] Figure 7 The structural schematic view of the steel beam structure of the string support self-balanced bridge deck system provided by the present application;

[0032] Figure 8 The effect diagram of the pedestrian bridge provided by the present application, which adopts the space string support structure and is provided with the semi-rigid tension canopy structure.

[0033] Reference signs:

[0034] 100, string support self-balanced bridge deck system; 200, semi-rigid tension canopy structure; 300, bridge pier system;

[0035] 11, rigid suspended truss; 12, ridge edge cable; 13, distributed stabilizing cable; 14, large-span direction edge cable; 15, floor cable member; 16, A-shaped support column; 161, outwardly extending short column; 162, main rod; 163, column base; 17, end support column; 18, swing support column;

[0036] 21, steel beam structure; 211, main beam; 212, secondary beam; 22, cast-in-place bridge deck slab; 23, bearing cable; 24, support web rod;

[0037] 31, newly-built counterforce support structure; 32, existing structure reconstruction type counterforce support structure. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, rather than all the embodiments. It should be noted that the embodiments and the features in the embodiments in the present disclosure can be combined, separated, interchanged and / or rearranged without conflict. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0039] In the drawings, the size and relative size of the components can be exaggerated for clarity and / or descriptive purposes. When the exemplary embodiments can be implemented differently, the specific process sequence can be performed in an order different from that described. For example, two continuously described processes can be performed substantially simultaneously or in an order opposite to that described. In addition, the same reference signs represent the same components.

[0040] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting. As used herein, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. Furthermore, to the extent that the terms "comprising," "including," "containing," and / or "having" and variations thereof are used herein, such terms are intended to be inclusive, in an open-ended fashion, and do not exclude the presence of one or more additional features, integers, steps, operations, members, components, and / or groups thereof. It is also noted that, as used herein, the terms "substantially," "approximately," and other similar terms, are used as terms of approximation and not as terms of degree, unless the context clearly indicates otherwise. Thus, at the very least, such terms are termed in a non-absolute sense.

[0041] Embodiment 1

[0042] One specific embodiment of the present application discloses a pedestrian overpass adopting a spatial cable-strut support structure and a semi-rigid tensile canopy structure, which can be referred to as a pedestrian overpass hereinafter.

[0043] As shown in Figures 1 to 8 the pedestrian overpass comprises a cable-strut support self-balancing bridge deck system 100 and a semi-rigid tensile canopy structure 200; the cable-strut support self-balancing bridge deck system 100 has a pressure-bearing bridge deck and a spatial cable-strut support structure arranged below the pressure-bearing bridge deck; the semi-rigid tensile canopy structure 200 has a rigid overhanging truss 11, a flexible cable-net structure system, vertical support members, and a ground anchor cable member 15; the flexible cable-net structure system is connected to the rigid overhanging truss 11; the vertical support members have A-shaped support columns 16, swing support columns 18, and end support columns 17, two A-shaped support columns 16 and two swing support columns 18 are connected between the rigid overhanging truss 11 and the pressure-bearing bridge deck, and the two A-shaped support columns 16 are located between the two swing support columns 18, the support height of the A-shaped support column 16 is lower than the support height of the swing support column 18; the top end of the swing support column 18 is connected to the end of the rigid overhanging truss 11, and the bottom end of the swing support column 18 is hinged to the pressure-bearing bridge deck and can swing within a safe angle range; the end support column 17 is arranged outside the swing support column 18, and the top end of the swing support column 18 is connected to the top end of the end support column 17; the ground anchor cable member 15 is connected to the top end of the end support column 17.

[0044] In this embodiment, the pedestrian overpass further comprises a pier system 300 for the pressure-bearing bridge deck. For a newly built pedestrian overpass, the pier system 300 can preferably be selected in the form of a steel pipe concrete member, which has the characteristics of simple construction and high bearing capacity; for a reconstructed or transformed pedestrian gallery bridge, the original bridge pier and foundation structure can be considered for continued use.

[0045] In this embodiment, the string support self-balancing bridge deck system 100 can be simply referred to as "bridge deck system", which adopts a string support structure and has high efficiency and beautiful appearance. The lower part of the pressure bridge is provided with a spatial string support structure, the bridge deck itself adopts a steel beam system, and a cast-in-place bridge deck slab 22 is arranged, which together constitute a bridge deck support system;

[0046] Specifically, the pressure bridge includes a steel beam structure 21 and a cast-in-place bridge deck slab 22 arranged above the steel beam structure 21, and the steel beam structure 21 serves as a pressure bearing part of the string support self-balancing bridge deck system 100. The load bearing cable 23 and the support web 24 are connected to the steel beam structure 21 to form a spatial string support structure.

[0047] In other words, the steel beam structure 21 has an upper chord structure, which is connected to the load bearing cable 23 and the support web 24 to form a spatial string support structure. The load bearing cable 23 is a pre-tensioning member that provides tension support force at a certain level of prestress; the support web 24 is supported between the load bearing cable 23 and the steel beam structure 21 of the pressure bridge, which is beneficial to the pre-tensioning action of the load bearing cable 23, supports the pressure bridge and reduces the calculation structural span of the pressure bridge.

[0048] In order to ensure the width of the bridge deck, the spatial string support structure in this embodiment is preferably arranged in multiple bays, for example, two bays.

[0049] In one optional embodiment, the steel beam structure 21 includes a plurality of main beams 211, and a plurality of secondary beams 212 are vertically connected between adjacent two main beams 211; the adjacent two main beams 211 and the secondary beams 212 therebetween together constitute an upper chord structure of a spatial string support structure. That is, the steel beam structure 21 has a plurality of parallel and continuous upper chord structures, and adjacent two spatial string support structures share one steel beam, and each upper chord structure is connected to one load bearing cable 23, and the load bearing cable 23 and the upper chord structure are provided with a support web 24.

[0050] In one preferred embodiment, the support web 24 is a V-shaped support rod, the tip of the V-shaped support rod is connected to the load bearing cable 23, and the two ends of the opening of the V-shaped support rod are connected to the connection between the secondary beam 212 and the main beam 211, and the V-shaped support rod and the secondary beam 212 form a triangular support structure.

[0051] Since the bridge deck system adopts the cable-strut support structure, the structural members are relatively slender, and the combined load is completed by the cable-strut members, so the overall vertical stiffness and natural frequency of the structure may be lower than that of the ordinary integral box-section pedestrian bridge structure, and the control of pedestrian comfort is relatively difficult. Therefore, in one of the optional embodiments, a tuned mass damper is arranged below the pressure bridge deck. The bridge deck under the tuned mass damper is used to assist in solving the pedestrian comfort problem of this kind of bridge structure. According to the structural dynamics calculation characteristics of the main bridge system, the tuned mass damper is matched and arranged to control the vertical acceleration response of the bridge deck system under the action of pedestrian excitation and ensure that the pedestrian comfort control standard meets the normal use requirements. Specifically, the tuned mass damper is suspended below the pressure bridge deck. Preferably, the tuned mass damper is connected to the steel beam structure 21 of the pressure bridge deck, and the lower end of the tuned mass damper is as close to the steel beam as possible and does not exceed the space range surrounded by the bearing cable 23 to ensure the aesthetics of the bridge deck.

[0052] In one of the optional embodiments, the pedestrian bridge is also provided with a counterforce support structure connected to the ground cable member 15. Alternatively, the counterforce support structure can be a newly built counterforce support structure 31 or a reconstructed counterforce support structure 32 realized by reconstructing the existing structure platform and the like. That is, the top end of the end support column 17 is connected to the newly built counterforce support structure 31 or the reconstructed counterforce support structure 32 through the ground cable member 15. Among them, the newly built counterforce support structure 31 can use the elevator traffic core and other building function spaces to set up a strong lateral force resisting steel structure support cylinder, and the lower part of the cylinder uses a pile foundation system to ensure the stability of the foundation, and the upper part is connected to the ground cable member 15 to realize the shed cable counterforce support structure, which is simple and efficient. For the reconstructed counterforce support structure 32 of the existing structure, measures such as adding steel beams and increasing the section of existing members can be taken to ensure that the bearing capacity conditions are met, and the counterweight design strategy is used as much as possible to meet the condition that the total weight of the existing structure + counterweight structure is not less than the counterforce of the upper shed ground cable, that is, after the reconstruction of the existing structure by the counterweight scheme, the existing structure will not be pulled by the ground cable member 15 of the upper shed structure and will not be in the risk of overturning in the opposite direction.

[0053] Of course, it can be understood that the ground cable member 15 can be directly connected to the ground foundation under the condition that the site conditions permit.

[0054] In this embodiment, the vertical support members of the semi-rigid tensioned canopy structure 200 can be directly arranged on the newly built bridge deck system, and the internal force transmission can be directly completed by the newly built bridge deck structure. In addition to the A-shaped support column 16 and the end support column 17, the vertical support member is further provided with a pair of swing support columns 18 in the middle. Mainly for the condition of increasing the span of the canopy, the span of the rigid suspended truss 11 and the cable net structure is further divided to control the structural deformation and internal force level. Moreover, the bottom end of the swing support column 18 is hinged to the bearing bridge deck. When the rigid suspended truss 11 deforms in the longitudinal plane, since the swing support column 18 is hinged to the bearing bridge deck, as the height position of the two ends of the rigid suspended truss 11 changes, the swing support column 18 can tilt and swing accordingly. That is, the swing support column 18 can swing within a safe angle range along the bridge deck span direction, and the tilt and swing range will not affect the safety of the structure.

[0055] In an alternative embodiment, the rigid suspended truss 11 is implemented in a planar double-web fish-belly shape and a vertical suspended open-web truss style. The rigid suspended truss 11 is a rigid fish-belly suspended truss with a double-web fish-belly structure in the planar direction and an open-web truss structure in the vertical direction. The rigid fish-belly suspended truss is made of high-strength materials such as high-strength steel, aluminum alloy, etc. It has a bidirectional stress-bearing cross-section size and belongs to the category of rigid members. Its structural shape is basically matched with the existing road bridge building scheme, and there is no need for form-finding of the flexible boundary of the cable structure, which better adapts to the design requirements of the existing road bridge building shape.

[0056] In this embodiment, the flexible cable net structure system has a ridge edge cable 12, a large-span direction edge cable 14, and a distributed stable cable 13. The top end of the swing support column 18 is connected to the top end of the end support column 17 through the ridge edge cable 12. The ridge edge cable 12, the large-span direction edge cable 14, and the distributed stable cable 13 together form a cable net surface. The rigid suspended truss 11, the ridge edge cable 12, the large-span direction edge cable 14, and the distributed stable cable 13 form an upper tensioned cable net structure. The upper tensioned cable net structure is provided with an opening at both ends along the span direction. The ridge edge cable 12 and the large-span direction edge cable 14 form the boundary of the upper tensioned cable net structure. By utilizing the characteristics of the flexible cable structure, such as being only subjected to tension and being able to apply prestress, the structure form-finding is completed according to the internal force balance condition, and finally the upper tensioned cable net structure is realized, which has reasonable shape and load bearing, high working efficiency, and saves the amount of structural materials. Among them, the ridge edge cable 12 and the large-span direction edge cable 14 are boundary members of the cable net structure. The distributed stable cable 13 is a distributed bearing system of each cable net interface, which supports the covering system attached to the cable net and provides stable support for the ridge edge cable 12 and the large-span direction edge cable 14. The above-mentioned ridge edge cable 12, large-span direction edge cable 14, and distributed stable cable 13 together form the flexible part of the entire cable net structure system, which is the prestressed tensioning implementation range and serves as the main distributed attachment range of the upper covering system.

[0057] In the embodiment, the pre-tensioning force of the distribution stabilizing cable 13 perpendicular to the large-span direction edge cable 14 is controlled to ensure the minimum standard level, i.e. to maintain the non-slack standard of the main checking working condition and the main cable net surface. For example, among the plurality of intersecting distribution stabilizing cables 13, a part is perpendicular to the large-span direction edge cable 14 and a part is parallel to the large-span direction edge cable 14; wherein the pre-tensioning force of the distribution stabilizing cable 13 perpendicular to the large-span direction edge cable 14 can be set to 3kN-5kN. Since the cable force of the low-curvature large-span direction edge cable 14 is mainly caused by the part of the vertical distribution stabilizing cable 13, this measure can effectively control the cable force level of the low-curvature edge cable.

[0058] In the embodiment, the A-shaped support column 16 and the swing support column 18 provide distributed support in the middle part of the canopy structure, effectively sharing the vertical load of the cable net coverage. Each A-shaped support column 16 is provided with two end support columns 17 on the outer side, and the top end of each end support column 17 is connected to the top end of the A-shaped support column 16 through a ridge edge cable 12; two large-span direction edge cables 14 and four ridge edge cables 12 have four end connection points, and the four end connection points are connected to the top end of an end support column 17 through a lock clamp. The two ends of the rigid suspended truss 11 are respectively connected to two ridge edge cables 12, and the top end of each swing support column 18 is connected to the end connection point of the rigid suspended truss 11.

[0059] In the embodiment, the large-span direction edge cable 14 adopts a low-curvature arrangement scheme, and the curvature of the large-span direction edge cable 14 is smaller and more close to a flat state, which can meet the flexibility requirement of the building shape. Among them, the large-span direction edge cable 14 is horizontal or approximately horizontal, which means that the large-span direction edge cable 14 has a small curvature and is basically horizontal in visual effect.

[0060] Further, the A-shaped support column 16 is provided with an outwardly extending short column 161, which is connected to the large-span direction edge cable 14 and used to provide middle support for the large-span direction edge cable 14, and the large-span direction edge cable 14 is horizontal or approximately horizontal. The outwardly extending short column 161 serves as a multi-span division support for the low-curvature large-span direction edge cable 14, ensures reasonable control of the maximum single-span of the low-curvature edge cable, effectively controls the peak value of the cable force, and thus effectively alleviates the problem of large cable force caused by low curvature.

[0061] In the embodiment, the A-shaped support column 16 is composed of two main rods 162, the top of the two main rods 162 is connected with the rigid suspended truss 11 at the same time, and the bottom of the two main rods 162 is directly connected with the bearing bridge deck of the bridge deck system. Optionally, the lower end of the two main rods 162 is provided with a column base 163, and the A-shaped support column 16 is connected with the steel beam structure 21 of the bearing bridge deck through the two column bases 163 to ensure the position node stiffness of the column bottom. The A-shaped support column 16 in the embodiment does not need to be provided with a counterbalanced rod between the two main rods 162, because the A-shaped support column 16 is directly supported on the newly-built bridge deck structure, and does not need to adopt the disengagement strategy, and can directly utilize the newly-built bridge deck structure to complete the thrust self-balancing action. At the same time, for the A-shaped support column 16, because it is no longer an edge span support member, but is located at the middle support of the rigid suspended truss 11, and the position node stiffness of the column bottom is large, it is not necessary to provide an out-of-plane stabilizing rod on the A-shaped support column 16.

[0062] In an optional embodiment, the end support column 17 and the swing support column 18 are both inclined away from the A-shaped support column 16. Further, the two end support columns 17 on the same side are inclined away from each other in the vertical bridge deck span direction, and are in an inverted eight-shaped form. The above structure can improve the support stability of the end support column 17 and the swing support column 18.

[0063] Compared with the prior art, the footbridge provided by the embodiment and adopting the space cable-strut support structure and the semi-rigid tensile canopy structure has the following beneficial effects:

[0064] 1. The bearing bridge deck, the bearing cable and the V-shaped support rod jointly form a cable-strut support self-balancing bridge deck system, and by using the prestress loading and the structural self-balancing design strategy, the working efficiency of the structural member is effectively improved, the material is saved, and the cost is controlled while the light and thin visual effect of the bridge deck is ensured.

[0065] 2. The semi-rigid tensile canopy structure of the application utilizes the rigid suspended truss to replace the top flexible ridge cable structure in the existing space cable net system, and utilizes the rigid suspended truss, the flexible ridge edge cable, the edge cable and the distributed stabilizing cable to jointly construct the overall cable net structure plane support system, which effectively improves the vertical stiffness and lateral stiffness of the overall structure, effectively controls the vertical deformation of the main body of the large-span tensile canopy structure and the horizontal deformation under the action of horizontal loads such as wind load, and significantly improves the stability and structural safety of the overall structure.

[0066] 3. The semi-rigid tensile canopy structure of the application utilizes the segmented support of the A-shaped support column and the swing support column, the low stress applied by the vertically distributed stabilizing cable, and the scheme of setting the ground-falling cable member, effectively controls the edge cable force state under the condition of low curvature, and realizes the design scheme of the tensile canopy structure adopting the small-curvature large-span direction edge cable.

[0067] The above detailed description of the specific implementation is further detailed for the purpose of the application, technical solutions and beneficial effects, and it should be understood that the above description is only for the specific implementation of the application and is not used to limit the protection scope of the application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the application shall be included in the protection scope of the application.

Claims

1. A footbridge provided with a semi-rigid tensile canopy structure in a spatial tensegrity support configuration, characterized in that, The application relates to a self-balanced bridge deck system, and relates to a semi-rigid tensile canopy structure. The flexible cable net structure system is connected to the rigid suspended truss. The vertical support members have A-shaped support columns, swing support columns and end support columns, two A-shaped support columns and two swing support columns are connected between the rigid suspended truss and the pressure-bearing bridge deck, and the two A-shaped support columns are located between the two swing support columns; the top end of the swing support column is connected to the end of the rigid suspended truss, and the bottom end of the swing support column is hinged to the pressure-bearing bridge deck; the end support column is arranged outside the swing support column, and the top end of the swing support column is connected to the top end of the end support column; the ground anchor cable member is connected to the top end of the end support column. The flexible cable net structure system has ridge edge cables, large-span direction edge cables and distributed stabilizing cables; the top end of the swing support column is connected to the top end of the end support column through the ridge edge cables; the A-shaped support column is provided with an outwardly extending short column which is connected to the large-span direction edge cable and is used for providing middle support for the large-span direction edge cable; and the large-span direction edge cable is horizontal or approximately horizontal. The pressure-bearing bridge deck comprises a steel beam structure and cast-in-place bridge deck plates arranged above the steel beam structure. The steel beam structure has an upper chord structure which is connected with load-bearing cables and support web members to form a spatial cable-strut support structure.

2. The footbridge employing the spatial tensile-arched braced configuration and provided with the semi-rigid tensile canopy structure according to claim 1, characterized in that, The spatial cable-strut support structure is arranged in multiple frames. The steel beam structure comprises a plurality of main beams, and a plurality of secondary beams are vertically connected between adjacent two main beams.

3. The footbridge employing the spatial beam string support structure and provided with the semi-rigid tensile canopy structure according to claim 2, characterized in that, The adjacent two main beams and the secondary beams therebetween jointly form the upper chord structure of a frame of the spatial cable-strut support structure.

4. The footbridge employing the spatial beam string support structure and provided with the semi-rigid tensile canopy structure according to claim 3, characterized in that, The support web members are V-shaped support members, the tips of the V-shaped support members are connected to the load-bearing cables, and the two ends of the opening of the V-shaped support members are connected to the connection positions of the secondary beams and the main beams. A tuned mass damper is arranged below the pressure-bearing bridge deck.

5. The footbridge employing the spatial beam string support structure and provided with the semi-rigid tensile canopy structure according to claim 4, characterized in that, The top end of the end support column is connected to a newly-built counterforce support structure or a counterforce support structure for existing structure reconstruction through the ground anchor cable member.

6. The footbridge with semi-rigid tensile canopy structure and spatial tensile-arch support configuration according to any one of claims 1 to 5, characterized in that, The end support column and the swing support column are inclined away from the A-shaped support column.

7. The footbridge employing the spatial beam string support construction and provided with the semi-rigid tensile canopy structure according to claim 1, characterized in that, ​ 8. The footbridge employing the spatial tensile-arched-braced configuration and provided with the semi-rigid tensile canopy structure according to claim 1, characterized in that, ​

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