CN111910525A

CN111910525A - Steel trestle

Info

Publication number: CN111910525A
Application number: CN202010840469.1A
Authority: CN
Inventors: 张何; 张兵兵; 朱庆庆; 渠凯; 黄振威
Original assignee: Road and Bridge International Co Ltd; China Communications Road and Bridge North China Engineering Co Ltd
Current assignee: Road and Bridge International Co Ltd; China Communications Road and Bridge North China Engineering Co Ltd
Priority date: 2020-08-19
Filing date: 2020-08-19
Publication date: 2020-11-10
Anticipated expiration: 2040-08-19
Also published as: CN111910525B

Abstract

The application discloses steel trestle. This steel trestle includes: a gantry crane track and a traffic-ensuring steel trestle share a foundation and are combined through a first traffic section for traffic protection; the second passing section is used for passing the gantry crane and is parallel to and adjacent to the first passing section; the pair of gantry crane foundations are arranged at two ends of the first passing section and the second passing section; a pair of steel trestle foundation sets up portal crane basis first passageway section the downside of second passageway section this application has solved the cost higher, poor stability, and the poor technical problem of security performance.

Description

Steel trestle

Technical Field

The application relates to the field of bridge engineering construction, in particular to a steel trestle.

Background

With the continuous development of urban bridge construction, many bridges have ornamental functions while playing a role of transportation junction, especially around scenic spots.

Therefore, the more bridges are designed in special environments such as river crossing and lake crossing, the more rain and more wetlands and lakes exist in eastern coastal cities and south China, and the need of constructing a passage to keep the way in the construction process is avoided.

The steel arch bridge is graceful in design and spans the Sihehe. The main bridge steel box girder adopts portal crane mounting process, and the portal crane track is set up to the portal crane below, in order to guarantee that the temporary road usually reaches the rainy season during the construction and meets the drainage flood discharge requirement, sets up the steel trestle in main river course. The current construction scheme sets up the steel trestle and protects to lead to the bridge drainage flood discharge, sets up another steel trestle support portal crane track again. The following inconveniences are evident: (1) the cost of separately arranging two steel trestles is high. (2) The stability is poor. (3) And a gap is reserved between the two steel trestles, so that the safety is poor.

Aiming at the problems of higher manufacturing cost, poor stability and poor safety performance in the related technology, no effective solution is provided at present.

Disclosure of Invention

The main aim at of this application provides a steel trestle to it is higher to solve the cost, poor stability, and the poor problem of security performance.

To achieve the above object, according to one aspect of the present application, a method is provided.

The steel trestle according to this application includes: a first pass segment for pass-through protection; the second passing section is used for passing the gantry crane and is parallel to and adjacent to the first passing section; the pair of gantry crane foundations are arranged at two ends of the first passing section and the second passing section; and the pair of steel trestle foundations are arranged at the lower sides of the gantry crane foundation, the first passing section and the second passing section.

Further, the first pass section includes: the device comprises a first Bailey frame, a first distribution beam group and a second distribution beam group, wherein the first distribution beam group is longitudinally arranged at the top of the first Bailey frame, and the second distribution beam group is arranged at the top of the first distribution beam group and is positioned above the first Bailey frame; the first bailey frame is arranged on the left side of the steel trestle foundation.

Further, the first beret frame comprises: seven first beret beams and four first pergolas, the first pergola is arranged between two first beret beams.

Further, the second pass section includes: the second Bailey frames, the third distribution beam group are longitudinally arranged at the tops of the second Bailey frames, and the support beams are obliquely supported at the rightmost sides of the second Bailey frames; the second bailey frame is arranged on the right side of the steel trestle foundation.

Further, the second bailey frame includes: the second pergola is arranged between the two second Bailey beams; the second beret beam on the leftmost side is connected with the rightmost side of the first passage section through the second pergola.

Furthermore, a pair of gantry crane track foundations are connected with the steel trestle foundation through a first bearing beam.

Furthermore, the first passage section and the second passage section are connected with the steel trestle foundation through a second bearing beam.

Further, the steel trestle foundation comprises: the steel pipe pile group is connected with the pile top through a third bearing beam and the second bearing beam.

Further, the steel trestle foundation still includes: and the horizontal coupling beams and the diagonal bracing beams are arranged among the steel pipe piles in the steel pipe pile group.

Further, the steel pipe pile group includes: the steel pipe pile comprises eight steel pipe piles which are longitudinally arranged in two rows.

In the embodiment of the application, a mode of combining a common foundation of a gantry crane track and a traffic-protection steel trestle is adopted, and a first traffic section for traffic protection is adopted; the second passing section is used for passing the gantry crane and is parallel to and adjacent to the first passing section; the pair of gantry crane foundations are arranged at two ends of the first passing section and the second passing section; the pair of steel trestle foundations are arranged at the lower sides of the gantry crane foundation, the first passing section and the second passing section; the lower part has been reached as a whole basis, the purpose of two sections of going through of upper portion design alone to realized reducing the cost, and promoted the technological effect of stability and security, and then solved the cost higher, poor stability, and the poor technical problem of security performance.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, serve to provide a further understanding of the application and to enable other features, objects, and advantages of the application to be more apparent. The drawings and their description illustrate the embodiments of the invention and do not limit it. In the drawings:

FIG. 1 is a schematic front view of a steel trestle according to an embodiment of the present application;

FIG. 2 is a side schematic view of a steel trestle according to a preferred embodiment of the present application;

figure 3 is a top view of a steel trestle according to yet another preferred embodiment of the present application.

Reference numerals

10. A first pass section; 20. a second pass section; 30. a gantry crane foundation; 40. a steel trestle foundation; 50. a first bailey frame; 60. a first distribution beam set; 70. a second set of distribution beams; 80. a first Bailey beam; 90. a first flower stand; 100. a second bailey frame; 110. a third distribution beam group; 120. a support beam; 130. a second Bailey beam; 140. a second flower stand; 150. a first load beam; 160. a second load-bearing beam; 170. a steel pipe pile group; 180. pile top; 190. a third load beam; 200. a parallel connection beam; 210. and (4) bracing the beam.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the invention and its embodiments and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meanings of these terms in the present invention can be understood by those skilled in the art as appropriate.

Furthermore, the terms "mounted," "disposed," "provided," "connected," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meanings of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

As shown in fig. 1-3, the present application relates to a steel trestle comprising: a first pass segment 10 for pass-through; the second passing section 20 is used for passing the gantry crane and is parallel to and adjacent to the first passing section 10; a pair of gantry crane foundations 30 arranged at both ends of the first passing section 10 and the second passing section 20; and a pair of steel trestle foundations 40 arranged below the gantry crane foundation 30, the first passage section 10 and the second passage section 20.

Specifically, the first passage section 10 has the functions of keeping the transport vehicle, the construction equipment and the like smooth and free, and draining water and discharging flood; the second passing section 20 has the functions of ensuring the passing of the gantry crane and facilitating the installation of the steel box girder on site; the gantry crane foundation 30 has the function of fixing the first passage section 10 and the second passage section 20; the steel trestle foundation 40 has the function of bearing the first passage section 10, the second passage section 20 and the gantry crane foundation 30. So, portal crane basis 30 and steel trestle foundation 40 connect into a whole, and the second section of expert 20 that is used for protecting the first section of expert 10 and is used for the portal crane construction of expert has set up respectively on same basis to guaranteed the whole atress of steel trestle, avoided having the clearance between bridge and the bridge simultaneously, and set up two steel trestles alone with the adaptation portal crane construction and protect the condition of expert requirement, and then reduced the cost, promoted stability and security. In this embodiment, the steel trestle foundation 40 and the gantry crane foundation 30 are respectively a pair and are respectively arranged at two ends of the first passing section 10 and the second passing section 20, and the first passing section 10 and the second passing section 20 are arranged in parallel, so as to ensure the stability of the structure; preferably, the first passage section 10 and the second passage section 20 are arranged in parallel and are positioned on the same horizontal plane, so that the construction difficulty is reduced, and only when the steel trestle foundation 40 is arranged, the height of each steel trestle foundation 40 is kept the same, and the construction according to different heights is not needed; the first passage section 10 and the second passage section 20 are adjacent, so that the gap is greatly reduced, and the safety is ensured.

In the present embodiment, taking the bridge length of 9m and the total width of 8.5m as an example, the width of the first pass segment 10 is set to 6.5 m; the width of the second pass section 20 is set to 2 m.

In the embodiment, the first passage section 10 and the second passage section 20 adopt different laying arrangement modes to adapt to the construction of the security and the gantry crane.

From the above description, it can be seen that the following technical effects are achieved by the present application:

in the embodiment of the application, a mode of combining a common foundation of a gantry crane track and a traffic-protection steel trestle is adopted, and a first traffic section 10 for traffic protection is adopted; the second passing section 20 is used for passing the gantry crane and is parallel to and adjacent to the first passing section 10; a pair of gantry crane foundations 30 arranged at both ends of the first passing section 10 and the second passing section 20; a pair of steel trestle foundations 40 arranged at the lower sides of the gantry crane foundation 30, the first passing section 10 and the second passing section 20; the lower part has been reached as a whole basis, the purpose of two sections of going through of upper portion design alone to realized reducing the cost, and promoted the technological effect of stability and security, and then solved the cost higher, poor stability, and the poor technical problem of security performance.

Preferably, in this embodiment, the first pass section 10 includes: the device comprises a first Bailey truss 50, a first distribution beam group 60 longitudinally arranged at the top of the first Bailey truss 50, and a second distribution beam group 70 arranged at the top of the first distribution beam group 60 and positioned above the first Bailey truss 50; the first bailey truss 50 is arranged on the left side of the steel trestle foundation 40. The first passage section 10 is formed by combining a first beret frame 50, a first distribution beam group 60 and a second distribution beam group 70; during laying, the first beret frame 50 is firstly installed on the steel trestle foundation 40, the first distribution beams in the first distribution beam group 60 are arranged on the first beret frame 50 at equal intervals, longitudinally and one by one, and finally the second distribution beams in the second distribution beam group 70 are arranged on the top of the first distribution beam group 60 at equal intervals, transversely and one by one to be used as a panel, the first distribution beams are not required to be completely covered, and a space for laying the second pass section 20 is required to be reserved; here, this distance is the width of the first beret frame 50, and therefore, the second distribution beam group 70 covers the first beret frame 50 when being laid. The construction is simple, and personnel's calibration of being convenient for.

In the embodiment, the beam spacing of the first distribution beam is 70.5cm or 79.5cm, and the first distribution beam is I25a I-steel; the beam spacing of the second distribution beam was 30cm and the second distribution beam was I14 wrought steel with a thickness of 10 mm.

Preferably, in this embodiment, the first beret frame 50 includes: seven first beret beams 80 and four first pergolas 90, the first pergolas 90 being disposed between two of the first beret beams 80. As shown in fig. 2, two first beret beams 80 are arranged at the left end, two are arranged at the right end, three are arranged at the middle position of the first passage section 10, and the first pergola 90 is arranged between two first pergola beams 80 and the second pergola 140, so that the stability is enhanced by the cooperation of the first pergola beams 80 and the second pergola 140, and the bearing capacity of the bridge is improved by the arrangement of the above positions.

Preferably, in this embodiment, the second pass section 20 includes: a second bailey frame 100, a third distribution beam group 110 longitudinally disposed on top of the second bailey frame 100, and a support beam 120 inclinedly supported on the rightmost side of the second bailey frame 100; the second bailey truss 100 is arranged on the right side of the steel trestle foundation 40. The second passage section 20 is formed by combining a second bailey truss 100 and a third distribution beam group 110; during laying, the second bailey frames 100 are firstly installed on the space reserved on the steel trestle foundation 40, and then the third distribution beams in the third distribution beam group 110 are arranged on the second bailey frames 100 at equal intervals, longitudinally and one by one; in order to ensure that the first passage section and the second passage section can be respectively matched with the traffic protection and the gantry crane construction, the beam spacing of the third distribution beam is set to be different from the beam spacing of the first distribution beam, preferably, the third distribution beam is arranged in an encrypted manner; and no second distribution beam is provided as a panel on top of the third distribution beam. In addition, support beams 120 are provided to enhance the stability of the second pass section 20.

In the embodiment, the beam distance of the third distribution beam is 17.5cm or 19.5cm, and the third distribution beam is I25a I-steel; the support beam 120 is I14I steel.

Preferably, in this embodiment, the second bailey frame 100 includes: four second beret beams 130 and four second trusses 140, the second trusses 140 being disposed between two of the second beret beams 130; the leftmost second beret beam 130 is connected to the rightmost side of the first passing section 10 through the second pergola 140. As shown in fig. 2, the second bailey beams 130 are arranged in the space reserved in the steel trestle foundation 40 at equal intervals, and two bailey beams are connected with each other by the second flower stand 140, so that the stability of the bridge can be enhanced by the cooperation of the second bailey beams 130 and the second flower stand 140; meanwhile, the bearing capacity of the bridge is improved through the arrangement of the positions.

Preferably, in this embodiment, a pair of the gantry crane track foundations are connected to the steel trestle foundation 40 through the first bearing beam 150. The first bearing beam 150 plays a role of supporting and fixing the gantry crane rail foundation, and can be connected with the steel trestle foundation 40 at the bottom, so that the gantry crane foundation 30 and the steel trestle foundation 40 are integrated. In this embodiment, preferably, the first bearing beam 150 is made of 2I32a steel, the gantry crane track foundation is cast on the 2I32a steel, and the left end and the right end of the gantry crane track foundation are supported by the two first bearing beams 150; effectively enhancing the stability and safety.

Preferably, in this embodiment, the first passage section 10 and the second passage section 20 are connected to the steel trestle foundation 40 through a second bearing beam 160. The second bearing beam 160 has the functions of supporting and fixing the first passage section 10 and the second passage section 20, and can be connected with the steel trestle foundation 40 at the bottom; in this embodiment, preferably, the second bearing beam 160 is made of 2I45a I steel, and the left and right ends of the second bearing beam 160 support the first passage section 10 and the second passage section 20.

Preferably, in this embodiment, the steel trestle foundation 40 includes: the steel pipe pile group 170 is connected with the pile top 180 through a third bearing beam 190, the second bearing beam 160 and the pile top 180. The third bearing beam has the functions of supporting and fixing the pile top 180 and the second bearing beam 160, and can be connected with the steel pipe pile group 170 at the bottom; in this embodiment, preferably, the third bearing beam is also made of 2I45a steel; the steel pipe pile groups 170 are two groups, and are respectively positioned at the left end and the right end of the first passing section 10 and the second passing section 20. Preferably, in this embodiment, the steel pipe pile group 170 includes: the steel pipe pile comprises eight steel pipe piles which are longitudinally arranged in two rows. As shown in fig. 3, a third bearing beam is arranged on each row of steel pipe piles, four rows of eight steel pipe piles correspond to four third bearing beams, a pile top 180 is arranged on the top surface formed by the four third bearing beams, and a gantry crane track foundation is erected through the pile tops 180.

In this embodiment, the steel pipe pile is a foundation column with a diameter of 530 mm × 8 mm.

Preferably, in this embodiment, the steel trestle foundation 40 further includes: a tie beam 200 and a raker beam 210 arranged between the steel pipe piles in the steel pipe pile group 170. The structural stability of the steel pipe pile group 170 is enhanced by the tie beams 200 and the raker beams 210, thereby enhancing the stability of the whole foundation.

Preferably, as shown in fig. 1, in order to ensure that the water level rises to submerge the gantry crane track foundation and the construction access during construction, a U-shaped groove with the width not more than 5m is excavated at the midspan position of the trestle as a water passing channel.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A steel trestle, comprising: a first pass segment for pass-through protection; the second passing section is used for passing the gantry crane and is parallel to and adjacent to the first passing section; the pair of gantry crane foundations are arranged at two ends of the first passing section and the second passing section; and the pair of steel trestle foundations are arranged at the lower sides of the gantry crane foundation, the first passing section and the second passing section.

2. The steel trestle of claim 1, wherein the first traffic segment comprises: the device comprises a first Bailey frame, a first distribution beam group and a second distribution beam group, wherein the first distribution beam group is longitudinally arranged at the top of the first Bailey frame, and the second distribution beam group is arranged at the top of the first distribution beam group and is positioned above the first Bailey frame; the first bailey frame is arranged on the left side of the steel trestle foundation.

3. The steel trestle of claim 2, wherein the first beret comprises: seven first beret beams and four first pergolas, the first pergola is arranged between two first beret beams.

4. The steel trestle of claim 1, wherein the second pass segment comprises: the second Bailey frames, the third distribution beam group are longitudinally arranged at the tops of the second Bailey frames, and the support beams are obliquely supported at the rightmost sides of the second Bailey frames; the second bailey frame is arranged on the right side of the steel trestle foundation.

5. The steel trestle of claim 4, wherein the second bailey truss comprises: the second pergola is arranged between the two second Bailey beams; the second beret beam on the leftmost side is connected with the rightmost side of the first passage section through the second pergola.

6. The steel trestle of claim 1, wherein a pair of the gantry crane rail foundations are each connected to the steel trestle foundation by a first spandrel beam.

7. The steel trestle of claim 1, wherein the first passage section and the second passage section are each connected to the steel trestle foundation by a second bearing beam.

8. The steel trestle of claim 7, wherein the steel trestle foundation comprises: the steel pipe pile group is connected with the pile top through a third bearing beam and the second bearing beam.

9. The steel trestle of claim 8, wherein the steel trestle foundation further comprises: and the horizontal coupling beams and the diagonal bracing beams are arranged among the steel pipe piles in the steel pipe pile group.

10. The steel trestle of claim 8, wherein the steel pipe pile group comprises: the steel pipe pile comprises eight steel pipe piles which are longitudinally arranged in two rows.