CN112144329A - Track support assembly, assembly method thereof, track and track traffic system - Google Patents
Track support assembly, assembly method thereof, track and track traffic system Download PDFInfo
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- CN112144329A CN112144329A CN201910577898.1A CN201910577898A CN112144329A CN 112144329 A CN112144329 A CN 112144329A CN 201910577898 A CN201910577898 A CN 201910577898A CN 112144329 A CN112144329 A CN 112144329A
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- framework
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B29/00—Laying, rebuilding, or taking-up tracks; Tools or machines therefor
- E01B29/16—Transporting, laying, removing, or replacing rails; Moving rails placed on sleepers in the track
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Abstract
The invention discloses a track support component, an assembly method thereof, a track and a track traffic system, wherein the track support component comprises: basis and pier stud, the basis is including being suitable for to sink the first skeleton of locating the foundation ditch, first skeleton includes first roof beam and second roof beam, first roof beam with the extending direction of second roof beam is different and the intersection links to each other, the pier stud supports on the basis and with first skeleton links to each other. According to the track support assembly, the excavation area can be reduced, the construction period is shortened, and the influence on site traffic is reduced.
Description
Technical Field
The invention relates to the technical field of rail transit, in particular to a rail support assembly, an assembly method of the rail support assembly, a rail and a rail transit system.
Background
In the related art, the foundation of the rail supporting assembly is large in area, the foundation excavation surface is large during construction, the construction occupied area is large, the influence on the underground space is large, large-scale pipeline relocation, greening transplantation and other work need to be carried out on places with complex pipelines, the construction period is long, and the influence on site traffic is large.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a track support assembly, an assembly method thereof, a track and a track traffic system, wherein the track support assembly occupies a small area, can reduce the excavation area, shortens the construction period and reduces the influence on site traffic.
A track support assembly according to the first aspect of the invention, comprising: the foundation comprises a first framework suitable for being sunk in a foundation pit, the first framework comprises a first beam and a second beam, and the first beam and the second beam have different extension directions and are connected in an intersecting manner; the pier stud, the pier stud support is in on the basis and with first skeleton links to each other.
According to the track support assembly, the occupied area of the foundation of the track support assembly is small, the excavation area can be reduced, the construction period is shortened, and the influence on site traffic is reduced.
In some embodiments, the second beam extends in a direction perpendicular to the direction of extension of the first beam.
In some embodiments, one end of the second beam meets and joins the middle of the first beam.
In some embodiments, the second beams are two and distributed on both sides of the first beam in the width direction, and one end of each second beam is connected to the intersection of the first beam.
In some embodiments, the centerlines of two of the second beams are collinear.
In some embodiments, the pier is connected at a location where the first beam and the second beam meet.
In some embodiments, the central axis of the pier stud coincides with the vertical centerline of the first framework.
In some embodiments, the bottom surface of the first framework is a horizontal surface, and the height of the first framework where the pier stud is installed is greater than the edge height H2 of the first framework.
In some embodiments, the first beam and the second beam are both steel beams, so that the first framework is a steel skeleton.
In some embodiments, the track support assembly further comprises: a pile foundation including a beam connecting free ends of at least one of the first and second beams.
In some embodiments, the pile foundation further comprises a pile, the upper end of the pile being connected to the beam, the pile being formed by a dry-work drilling grouting process, and the beam being formed by a grouting process and surrounding the respective free end.
In some embodiments, the foundation further comprises a second framework adapted to be sunk in the foundation pit, the second framework being disposed around the first framework and connected to the first framework.
In some embodiments, the second beams are two and distributed on two sides of the first beam in the width direction, the center lines of the two second beams are collinear and perpendicular to the center line of the first beam, the second framework comprises two third beams and two fourth beams, the two third beams are both arranged in parallel with the second beam, the two fourth beams are both arranged in parallel with the first beam, and the two third beams and the two fourth beams are sequentially connected end to form a rectangle.
In some embodiments, the two free ends of the first beam are connected to the middle portions of the two third beams, respectively, and the two free ends of the second beam are connected to the middle portions of the two fourth beams, respectively.
In some embodiments, at least one of the first beam, the second beam, the third beam, and the fourth beam is formed of steel and includes a wing plate, a web plate, and a stiffener plate connected between the wing plate and the web plate, and at least one of the web plate and the stiffener plate is provided with a first shear member.
In some embodiments, the third beam and the fourth beam are steel beams, so that the second framework is a steel skeleton.
In some embodiments, the track support assembly further comprises: the first wrapping layer is a concrete layer and wraps the foundation.
In some embodiments, the pier stud is pre-connected to the first frame by a connector.
In some embodiments, the track support assembly further comprises: and the second wrapping layer at least wraps the lower end of the pier stud.
In some embodiments, the lower end side of the pier is provided with a second shearing piece.
A track according to a second aspect of the invention, comprising: a rail beam and a rail support assembly according to the first aspect of the invention, the rail beam being erected on the pier.
According to the track, the occupied area of the track supporting assembly is small, the excavation area can be reduced, the construction period is shortened, and the influence on site traffic is reduced.
A rail transit system according to a third aspect of the invention comprises: a train and a track according to the second aspect of the invention, the train running along the track.
According to the rail transit system, the occupied area of the rail support assembly is small, the excavation area can be reduced, the construction period is shortened, and the influence on site traffic is reduced.
A method of assembling a track support assembly according to a fourth aspect of the present invention, the track support assembly being a track support assembly according to some embodiments of the first aspect of the present invention, the method comprising the steps of: and excavating a foundation pit, namely sinking the first framework in the foundation pit, manufacturing the pile foundation, and installing the pier stud to the first framework.
According to the assembling method of the track support assembly, the occupied area of the track support assembly is small, the excavation area can be reduced, the construction period is shortened, and the influence on site traffic is reduced.
A method of assembling a track support assembly according to a fifth aspect of the present invention, the track support assembly being a track support assembly according to some embodiments of the first aspect of the present invention, the method comprising the steps of: and excavating a foundation pit, wherein the first framework and the second framework are arranged in the foundation pit in a sinking way, and the pier stud is installed on the first framework.
According to the assembling method of the track support assembly, the occupied area of the track support assembly is small, the excavation area can be reduced, the construction period is shortened, and the influence on site traffic is reduced.
In some embodiments, prior to installing the pier stud to the first frame, further comprising: and installing a connecting piece on the first framework, pouring concrete to wrap the foundation, pre-connecting the pier stud to the connecting piece, and pouring concrete to wrap the lower end of the pier stud.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic plan view of a track support assembly according to one embodiment of the present invention;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;
FIG. 3 is a schematic plan view of a track support assembly according to another embodiment of the present invention;
FIG. 4 is a schematic plan view of a track support assembly according to another embodiment of the present invention;
FIG. 5 is a schematic plan view of a track support assembly according to another embodiment of the present invention;
FIG. 6 is a schematic plan view of a track support assembly according to another embodiment of the present invention;
FIG. 7 is a schematic plan view of a track support assembly according to another embodiment of the present invention;
FIG. 8 is a schematic plan view of a track support assembly according to another embodiment of the present invention;
FIG. 9 is a cross-sectional view taken along line B-B of FIG. 8;
FIG. 10 is a cross-sectional view taken along line C-C of FIG. 8;
FIG. 11 is a schematic structural view of the first beam of FIG. 8;
FIG. 12 is a schematic illustration of the splicing of two second sub-beams of FIG. 8;
FIG. 13 is a schematic view of the connection of the third beam and the first beam of FIG. 8;
FIG. 14 is a schematic view of a rail transit system according to one embodiment of the present invention;
FIG. 15 is a perspective view of a track support assembly according to one embodiment of the present invention;
FIG. 16 is a perspective view of a track support assembly according to another embodiment of the present invention;
fig. 17 is a perspective view of a track support assembly according to another embodiment of the present invention.
Reference numerals:
a rail transit system 10000;
a track 1000; a train 2000; a track support assembly 100; a track beam 200;
a base 1; a first skeleton 11; a first beam 111; a second beam 112; a second sub-beam 1121;
a second skeleton 12; a third beam 121; a fourth beam 122;
a wing 13; a web 14; a stiffener 15; a first shear member 16;
a fastener 17; a backing plate 18; a second shear member 19;
a pier stud 2; a connecting member 21;
a pile foundation 3; a beam 31; a pile 32; a first wrapping layer 4; a second wrapping layer 5;
an underground pipeline 20000.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
The following disclosure provides many different embodiments, or examples, for implementing different features of the invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize the applicability of other processes and/or the use of other materials.
Next, a rail support assembly 100 according to an embodiment of the first aspect of the present invention is described. For example, the rail support assembly 100 may be used in a bridge structure of a rubber-tyred tram system, which has advantages such as a turning radius, and is suitable for use in a building-intensive scene such as a residential area.
As shown in fig. 1, the rail support assembly 100 according to the first aspect of the present invention may include a foundation 1 and an abutment 2. Wherein, the foundation 1 includes the first skeleton 11 that is suitable for the heavy setting in the foundation ditch, and first skeleton 11 includes first roof beam 111 and second roof beam 112, and the extending direction of first roof beam 111 and second roof beam 112 is different and the intersection links to each other, as shown in fig. 2, pier stud 2 supports on the foundation 1 and links to each other with first skeleton 11. It should be noted that the first beam 111 and the second beam 112 are both horizontally disposed and thus can be sunk in the foundation pit, but it should be noted that both the first beam 111 and the second beam 112 can be completely sunk in the foundation pit, or a small portion of the top edge can be exposed outside the foundation pit.
It should be noted that the foundation of the traditional track support assembly is formed into a cuboid shape, a foundation pit suitable for placing the cuboid shape needs to be excavated during construction, the construction process of large-volume concrete is complex, on-site formwork support, steel bar binding and pouring are also needed, the requirement on concrete pouring is high, a special large-volume concrete construction scheme needs to be generally worked out, the influence on an underground space is large, for a place with a complex pipeline, the work of large-scale pipeline relocation, greening transplantation and the like needs to be carried out, the construction period is long, and the influence on site traffic is large.
According to the track support assembly 100 of the embodiment of the invention, the first framework 11 comprises the first beam 111 and the second beam 112, and the first beam 111 and the second beam 112 have different extending directions and are connected in a crossing manner, so that when a foundation pit matched with the shape of the foundation 1 of the embodiment of the invention is excavated, the excavation area can be reduced because the foundation 1 of the embodiment of the invention has a small structure and is not in a whole cuboid shape, the damage to the underground space between the first beam 111 and the second beam 112 is small, the work of changing pipelines, greening and transplanting and the like in a large range is reduced, the construction period is shortened, and the influence on site traffic is reduced.
In some embodiments of the present invention, the extending direction of the second beam 112 may be perpendicular to the extending direction of the first beam 111. That is, the second beam 112 is perpendicular to the first beam 111. For example, as shown in fig. 1, the second beam 112 extends in the direction F2, and the first beam 111 extends in the direction F1, where the direction F1 is a transverse direction, the direction F2 is a forward direction, the transverse direction refers to a direction perpendicular to the central axis of the bridge, and the forward direction refers to the central axis of the bridge. Therefore, the second beam 112 and the first beam 111 are connected conveniently, the connection difficulty is reduced, and the construction cost is reduced.
Of course, the present invention is not limited to this, as shown in fig. 4, the extending direction of the second beam 112 may also be not perpendicular to the extending direction of the first beam 111, and the included angle between the center line of the first beam 111 and the center line of the second beam 112 may be adjusted according to the actual requirement, as long as it is ensured that the extending directions of the first beam 111 and the second beam 112 are different and are connected in an intersecting manner.
In some embodiments of the present invention, as shown in fig. 1, one end of the second beam 112 may be joined to the middle of the first beam 111 at an intersection. Therefore, the structural stability of the second beam 112 and the first beam 111 can be enhanced, the uniform stress of the first framework 11 is facilitated, and the bearing capacity of the first framework 11 is facilitated to be enhanced. Of course, the present invention is not limited thereto, and as shown in fig. 5, one end of the second beam 112 may be connected to the other part of the first beam 111, and the design of the connection position of the second beam 112 and the first beam 111 may be adjusted according to actual needs.
In some embodiments of the present invention, as shown in fig. 1, the second beams 112 may be two and distributed on both sides of the first beam 111 in the width direction, and one end of each second beam 112 is connected to the intersection of the first beam 111. Therefore, the structural stability of the second beam 112 and the first beam 111 can be enhanced, the uniform stress of the first framework 11 is facilitated, and the bearing capacity of the first framework 11 is facilitated to be enhanced. Of course, the present invention is not limited thereto, and in other embodiments of the present invention, the number of the second beams 112 may also be one or three or more.
For example, as shown in fig. 6, the second beam 112 may be one, and one end of the second beam 112 is connected to the middle of the first beam 111 at an intersection; as another example, as shown in fig. 7, the number of the second beams 112 may be three, wherein two second beams 112 are located on one side of the first beam 111 in the width direction, and another second beam 112 is located on the other side of the first beam 111 in the width direction.
In some embodiments of the present invention, when the second beams 112 are two and distributed on both sides of the first beam 111 in the width direction, as shown in fig. 1, the center lines of the two second beams 112 may also be collinear. Here, the "center line of the second beam 112" refers to a center line that passes through a center point of the second beam 112 and extends along a length direction of the second beam 112. Therefore, the structural stability of the second beam 112 and the first beam 111 can be further enhanced, the uniform stress of the first framework 11 can be facilitated, and the bearing capacity of the first framework 11 can be enhanced.
In some embodiments of the present invention, as shown with reference to fig. 1 and 15, the track support assembly 100 may further include a pile foundation 3, the pile foundation 3 including a beam 31 and a pile 32, the beam 31 connecting the free ends of at least one of the first beam 111 and the second beam 112, in other words, the beam 31 may be connected to the free end of the first beam 111, or the beam 31 may be connected to the free end of the second beam 112, or the beam 31 may be connected to both the free end of the first beam 111 and the free end of the second beam 112. As shown in fig. 2, the upper end of pile 32 is connected to beam 31 and the lower end of pile 32 is adapted to be sunk in the earth. Wherein, the free end of the first beam 111 refers to the end of the first beam 111 that is not connected to the second beam 112, and the free end of the second beam 112 refers to the end of the second beam 112 that is not connected to the first beam 111.
Thus, the beams 31 and the piles 32 can transfer the load borne by the first framework 11 to a hard soil layer buried deeper, which is beneficial to improving the bearing capacity of the track support assembly 100, and meanwhile, the beams 31 are arranged at the free end of at least one of the first beams 111 and the second beams 112, which is beneficial to enhancing the moment arm length of the corresponding beam connected with the beams 31, so as to achieve the maximum resistance to bending moment.
It can be understood that, referring to fig. 3, when encountering the underground pipeline 20000, the size of the beam 31 and the arrangement distance of the piles 32 can be adjusted to flexibly avoid the underground pipeline 20000, thereby avoiding a large amount of pipeline relocation work, and reducing the cost while saving the construction period.
In some alternative embodiments of the invention, as shown in figure 1, the piles 32 are formed using a dry-work drilling grouting process and the beams 31 are formed using a grouting process and wrap around the respective free ends. Therefore, the reliability of connection between the reinforcing beam 31 and the corresponding free end is facilitated, the manufacturing cost is facilitated to be reduced, and the temporary construction land is reduced. Of course, the invention is not limited thereto, and the piles 32 and the beams 31 may also be formed as a single piece, for example, the piles 32 and the beams 31 may be connected by riveting or welding.
Specifically, the dry drilling process has the following advantages:
firstly, the construction cost can be reduced, and the temporary occupied land of the project can be reduced. The working principle is that the slag dust is blown out through the air pressure of the air compressor and is used for placing pile holes of the pile foundation 3, the method completely saves a slurry system, reduces the consumption of raw slurry materials and water resources, obviously reduces the engineering construction cost, and the slag soil is dug out for transportation. The cost for treating the slurry is low, so the cost for discharging and treating the slurry is also considerable, and the temporary land occupation of the slurry system is saved, so the method is particularly suitable for realizing construction under the condition of narrow field;
and secondly, the operation is intuitive, and the reserved chiseling pile head is easy to control. The problems of underwater pouring and overhigh pile head reservation are avoided, and the cost of partially over-pouring concrete and chiseling off the pile head is saved;
and thirdly, the environment is protected, and the civilized construction is facilitated. The mud-free construction site has neat and ordered environment, reduces mud emission, reduces the influence on the surrounding environment, avoids polluting public environments such as riverways, highways and the like, is easy to realize civilized construction on site, and improves the engineering efficiency;
fourthly, the construction quality is improved. Dry operation pore forming is convenient for sampling and judging stratum changes of each pore site, changes of basic geological conditions of engineering are clearly mastered, especially when some design requirements are that a final pore is in a certain geological layer, final pore sampling is a difficult problem which is difficult to solve by a slurry wall protection system, and dry operation pore forming can be easily and visually judged to be capable of completely visually mastering pore forming quality and progress so as to take response measures in time when problems occur;
and fifthly, the problem of upward floating of the reinforcement cage can be effectively solved by pouring concrete into the dry hole, and a hard cover can not be formed at the top of the concrete due to no settled sand, so that the problem of upward floating of the reinforcement cage can be reduced.
Sixthly, construction period is saved. The method has the advantages of saving a slurry system, being high in drilling speed, visual and visual inspection, high in acceptance speed and concrete pouring speed, saving a large number of complicated processes on the premise of ensuring the quality, greatly improving the construction speed and saving the construction period by 30 percent.
Seventh, the operation is convenient, can reduce the labor intensity of the operating worker.
Further, for the grouting process, after the drilling machine drills a hole, a reinforcement cage which is pre-wound with a guide pipe can be put into the pile hole, the upper part of the guide pipe is connected with a grout outlet of a grout conveying pump station, and the high-pressure grouting hole forming operation is completed by means of the grout conveying pump station. The method is suitable for grouting operation of the small pile foundation 3. The whole foundation 1 engineering construction technology relates to the following key construction links: drilling positioning construction → drilling construction → placing of reinforcement cage → high pressure grouting construction → pile forming construction.
In some specific examples, as shown in fig. 1 and 2, the first frame 11 includes a first beam 111 and two second beams 112, the two second beams 112 are distributed on both sides of the first beam 111 in the width direction, one end of each second beam 112 is connected to a middle portion of the first beam 111 by welding, the two second beams 112 extend in a direction perpendicular to the first beam 111, and the center lines of the two second beams 112 are collinear. The two free ends of the first beam 111 are connected to the middle of the corresponding beam 31, respectively, the corresponding beam 31 is formed in an elongated shape and extends in a direction perpendicular to the first beam 111, the two ends of the corresponding beam 31 are connected to the top ends of the corresponding piles 32, respectively, the free end of each second beam 112 is connected to the middle of the corresponding beam 31, the corresponding beam 31 is formed in an elongated shape and extends in a direction perpendicular to the second beams 112, and the two ends of the corresponding beam 31 are connected to the top ends of the corresponding piles 32, respectively.
In some embodiments of the present invention, as shown in fig. 8, the foundation 1 may further include a second framework 12 adapted to be sunk in the foundation pit, wherein the second framework 12 is disposed around the first framework 11 and connected to the first framework 11. Therefore, the second frame 12 can share the stress of the first frame 11, and the bearing capacity of the track support assembly 100 can be enhanced. It should be noted that the second framework 12 is horizontally disposed, so as to be sunk in the foundation pit, but it should be noted that the second framework 12 may be completely sunk in the foundation pit, or a small portion of the top edge may be exposed outside the foundation pit. In addition, it should be noted that, when foundation 1 includes second framework 12, foundation 1 may include pile foundation 3, also may not include pile foundation 3 to set up in a flexible way according to different needs.
In some alternative embodiments of the present invention, as shown in fig. 8, the second beams 112 may be two and distributed on both sides of the first beam 111 in the width direction, the center lines of the two second beams 112 are collinear and perpendicular to the center line of the first beam 111, in this case, both ends of the first beam 111 are free ends, and one end of each second beam 112 is a junction connection end, and the other end is a free end.
With reference to fig. 8 and 17, the second frame 12 may include two third beams 121 and two fourth beams 122, the two third beams 121 are both disposed parallel to the second beam 112, and the two fourth beams 122 are both disposed parallel to the first beam 111, wherein the two third beams 121 and the two fourth beams 122 are sequentially connected end to form a rectangle. Therefore, the structural stability of the foundation 1 is enhanced, the bearing capacity of the foundation 1 is further enhanced, meanwhile, the first beam 111, the second beam 112, the third beam 121 and the fourth beam 122 are convenient to assemble, the structure is simple, and the construction cost is reduced.
In some embodiments of the present invention, as shown in fig. 8, the two free ends of the first beam 111 may be connected to the middle portions of the two third beams 121, respectively, and the free ends of the two second beams 112 may be connected to the middle portions of the two fourth beams 122, respectively. This is advantageous in enhancing the structural stability of the foundation 1 and in further enhancing the load-bearing capacity of the foundation 1.
In some embodiments of the present invention, as shown with reference to fig. 10 and 11, at least one of the first beam 111, the second beam 112, the third beam 121, and the fourth beam 122 is a steel section and includes a wing plate 13, a web plate 14, and a stiffener plate 15 connected between the wing plate 13 and the web plate 14, and at least one of the web plate 14 and the stiffener plate 15 is provided with a first shear member 16.
It can be understood that the section steel is an economic section efficient section bar with optimized section area distribution and reasonable strength-to-weight ratio, the section width on the plane perpendicular to the length direction of the section steel is narrow, the section height is small, further reduction of the excavation area and the excavation depth is facilitated, and meanwhile, the structural strength and the bearing capacity of the section steel are further facilitated by arranging the stiffening plate 15 connected between the wing plate 13 and the web plate 14 and arranging the first shear member 16 on at least one of the web plate 14 and the stiffening plate 15.
In some specific examples, there are two wing plates 13 of each section steel, as shown in fig. 11, the two wing plates 13 are disposed at intervals in the width direction of a web 14, two side edges in the width direction of the web 14 are respectively connected to the middle portions of the corresponding wing plates 13, a stiffening plate 15 is connected between the wing plates 13 and the web 14, the extending direction of the stiffening plate 15 is perpendicular to the extending direction of the web 14, the first shear members 16 may be bolts, a plurality of through holes adapted to be matched with the plurality of first shear members 16 in a one-to-one correspondence are disposed on the stiffening plate 15, and a plurality of through holes adapted to be matched with the plurality of first shear members 16 in a one-to-one correspondence are also disposed on the web 14. For example, two stiffening plates 15 are disposed on the first beam 111, the two stiffening plates 15 are disposed at intervals in the length direction of the first beam 111 and adjacent to the middle portion of the first beam 111, and one end of the second beam 112 is connected to the middle portion of the first beam 111 and located between the two stiffening plates 15.
Specifically, the connection mode of the two section steel beams is not limited, and the connection mode can be specifically designed according to the requirements of supporting strength and the like. For example, in some embodiments of the present invention, referring to fig. 8, the first beam 111, the second beam 112, the third beam 121, and the fourth beam 122 are all made of steel sections, the number of the second beams 112 is two, the first beam 111 and the two second beams 112 are respectively connected by welding, referring to fig. 13, the web 14 of the first beam 111 is connected by splicing with the stiffener plate 15 of the third beam 121 by the backing plate 18 and the fastener 17 (e.g., bolt), the second beam 112 is connected by welding with the fourth beam 122, and the stiffener plate 15 of the third beam 121 and the web 14 of the fourth beam 122 are connected by splicing with the fastener 17 (e.g., bolt) by the backing plate 18.
In some examples, as shown in fig. 13, a stiffener 15 is welded to the third beam 121, the stiffener 15 is disposed opposite to the web 14 of the first beam 111 and extends in the same direction as the first beam 111, a backing plate 18 is disposed on both sides of a joint between the stiffener 15 of the third beam 121 and the web 14 of the first beam 111, and a plurality of fasteners 17 are used to connect the backing plate 18 and the stiffener 15, and connect the backing plate 18 and the web 14 of the first beam 111.
In some examples, another stiffening plate 15 is welded on the third beam 121, the stiffening plate 15 is disposed opposite to the web 14 of the fourth beam 122 and has the same extending direction as the fourth beam 122, two sides of the joint of the stiffening plate 15 on the third beam 121 and the web 14 of the fourth beam 122 are both provided with a backing plate 18, and the backing plate 18 and the stiffening plate 15, and the backing plate 18 and the web 14 of the fourth beam 122 are respectively connected by a plurality of fasteners 17.
In some examples, as shown in fig. 12, the second beam 112 includes two second sub-beams 1121, and the two second sub-beams 1121 are connected to each other by a backing plate 18 and a fastener 17 (e.g., a bolt). Thereby, different bearing capacity requirements can be met. Of course, the present invention is not limited thereto, and the second beam 112 may be a whole beam, which is not formed by splicing a plurality of sub-beams.
Specifically, the two sides of the joint of the opposite flanges 13 of the two second sub-beams 1121 are respectively provided with a backing plate 18, the fastening member 17 fixes the corresponding flanges 13 and the backing plates 18, the two sides of the joint of the opposite webs 14 of the two second sub-beams 1121 are also respectively provided with a backing plate 18, and the fastening member 17 fixes the corresponding webs 14 and the backing plates 18.
In some examples, fastener 17 may be a high strength bolt with a nominal diameter of 22mm M22 and a mechanical rating of 10.9.
In some examples, the first beam 111, the second beam 112, the third beam 121, and the fourth beam 122 may be H-section steel, which is an economical section efficient section with more optimized cross-sectional area distribution and more reasonable strength-to-weight ratio, and is named after the section is the same as the english letter "H". Because each part of the H-shaped steel is arranged at a right angle, the H-shaped steel has the advantages of strong bending resistance, simple construction, cost saving, light structure weight and the like in each direction.
In some examples, the first beam 111 and the second beam 112 may both be steel beams. For example, as shown in fig. 1, the first frame 11 includes only the first beam 111 and the second beam 112, and both the first beam 111 and the second beam 112 are steel beams, so that the first frame 11 is a steel frame. This is advantageous in enhancing the structural stability of the foundation 1 and in further enhancing the load-bearing capacity of the foundation 1. Of course, the present invention is not limited thereto, and in some other embodiments of the present invention, the first beam 111 and the second beam 112 may be made of other materials, or may be a precast concrete beam, etc.
In some examples, the third beam 121 and the fourth beam 122 may both be steel beams. For example, as shown in fig. 8, the second frame 12 includes only the third beam 121 and the fourth beam 122, and both the third beam 121 and the fourth beam 122 are steel beams, so that the second frame 12 is a steel frame. This is advantageous in enhancing the structural stability of the foundation 1 and in further enhancing the load-bearing capacity of the foundation 1. Of course, the present invention is not limited thereto, and in other embodiments of the present invention, the third beam 121 and the fourth beam 122 may also be made of other materials, or may also be precast concrete beams, etc.
In some embodiments of the present invention, as shown in fig. 9, the rail support assembly 100 may further include: first parcel layer 4, first parcel layer 4 are concrete layer and parcel basis 1, that is to say, and basic 1's upper surface, side surface are covered by concrete layer at least to realize that basis 1 links to each other with the fixed of foundation ditch. Moreover, the defect of poor corrosion resistance of the first framework 11 can be avoided by carrying out concrete coating treatment on the foundation 1, and the traditional cuboid-shaped concrete foundation 1 is replaced by a mode of coating concrete on the first framework 11, so that only hoisting operation is needed at a construction site, the first framework 11 is hoisted to a corresponding position and is coated with concrete to form the first coating layer 4, and the problems of complex construction process of mass concrete and long maintenance time are avoided.
In some embodiments of the present invention, pier 2 may be connected at the intersection of first beam 111 and second beam 112, as shown in fig. 8. Therefore, the ability of the track support assembly 100 to resist bending moment is enhanced, and the bearing capacity of the track support assembly 100 is enhanced.
In some embodiments of the present invention, as shown in fig. 8, the central axis of the pier stud 2 may coincide with the vertical centerline of the first frame 11. Here, the "vertical center line of the first bobbin 11" refers to a straight line extending in the vertical direction through the center of the first bobbin 11. Therefore, the ability of the track support assembly 100 to resist bending moment is enhanced, and the bearing capacity of the track support assembly 100 is enhanced. For example, the first framework 11 includes a first beam 111 and two second beams 112, the two second beams 112 are distributed on two sides of the first beam 111 in the width direction, one end of each second beam 112 is connected with the middle of the first beam 111 by welding, the extending directions of the two second beams 112 are perpendicular to the first beam 111, the center lines of the two second beams 112 are collinear, and the projection of the first framework 11 on the plane perpendicular to the center line of the pier stud 2 is a centrosymmetric pattern.
In some embodiments of the present invention, referring to fig. 11, the bottom surface of the first frame 11 is a horizontal surface, and the height of the first frame 11 where the pier stud 2 is installed is greater than the height H2 of the edge of the first frame 11. From this, can guarantee first skeleton 11 to the bearing capacity of pier stud 2, can save material moreover, reduce the manufacturing cost of first skeleton 11.
In some embodiments of the present invention, as shown in fig. 11, the pier stud 2 is installed at the center of the first frame 11, in which the bottom surface of the first frame 11 is a horizontal surface, and the height H1 of the center of the first frame 11 may be greater than the height H2 of the edge of the first frame 11. It should be noted that the bottom surface of the first frame 11 is a plane, the height H1 of the center of the first frame 11 refers to the distance between the top surface at the center of the first frame 11 and the bottom surface of the first frame 11, and the height H2 of the edge of the first frame 11 refers to the distance between the top surface at the edge of the first frame 11 and the bottom surface of the first frame 11. It can be understood that the stress of the center position of the first frame 11 is large, the stress of the edge position of the first frame 11 is small, and by making the center height H1 of the first frame 11 greater than the edge height H2 of the first frame 11, the material can be saved and the production cost of the first frame 11 can be reduced on the basis of ensuring the bearing capacity of the first frame 11.
In some embodiments of the present invention, referring to fig. 11, the pier stud 2 is installed at a meeting position of the first beam 111 and the second beam 112 of the first frame 11, where a bottom surface of the first frame 11 is a horizontal plane, and a height of the meeting position of the first beam 111 and the second beam 112 is greater than a height H2 of an edge of the first frame 11. It can be understood that, the stress of the intersection position of the first beam 111 and the second beam 112 is large, and the stress of the edge position of the first framework 11 is small, so that the height of the intersection position of the first beam 111 and the second beam 112 is greater than the height H2 of the edge of the first framework 11, on the basis of ensuring the bearing capacity of the first framework 11, the material is saved, and the production cost of the first framework 11 is reduced. When the intersection positions of the first beam 111 and the second beam 112 are plural, the height of at least one intersection position is larger than the height H2 of the edge of the first frame 11.
In some embodiments of the present invention, the pier stud 2 is pre-connected to the first frame 11 by a connector 21. Therefore, the structure is simple, and the construction difficulty is favorably reduced. For example, the connecting member 21 may be an anchor bolt, and the connecting member 21 may serve as a temporary support for wrapping the lower end of the pier stud 2 with a second wrapping layer 5, which will be described below.
In some alternative embodiments of the present invention, as shown in fig. 10, track support assembly 100 may further include a second wrapping layer 5, second wrapping layer 5 wrapping at least the lower end of pier stud 2, for example, when connecting member 21 is exposed, second wrapping layer 5 may also wrap connecting member 21 at the same time. Wherein, the second wrapping layer 5 is a concrete layer. Therefore, the connection strength between the pier stud 2 and the foundation 1 is improved, and the bearing capacity and the reliability of the track support assembly 100 can be improved. In addition, the lower end side of the pier stud 2 can be further provided with a second shearing member 19 (refer to fig. 2 and 10), so that the wrapping reliability of the second wrapping layer 5 for the lower end of the pier stud 2 is improved. The second shear member 19 may be a bolt or the like, thereby facilitating the arrangement.
Next, a method of assembling the rail support assembly 100 according to some embodiments of the present invention is described.
Example one
As shown in fig. 1, when the track support assembly 100 includes the first frame 11 and the pile foundation 3, the assembling method of the track support assembly 100 may include the steps of: excavating a foundation pit, sinking the first framework 11 in the foundation pit, manufacturing a pile foundation 3, and installing a pier stud 2 on the first framework 11.
It can be understood that, compared with the conventional rectangular parallelepiped foundation, the method for assembling the track support assembly 100 according to the embodiment of the present invention can reduce the excavated area, has less damage to the underground space between the first beam 111 and the second beam 112, is beneficial to reducing the works such as large-scale pipeline relocation and greening transplantation, is beneficial to shortening the construction period, and reduces the influence on site traffic.
Placing the first framework 11 in the foundation pit specifically may include: the steel beams in the first framework 11 are sequentially placed in the foundation pit, and then the steel beams are connected together. Therefore, the construction difficulty is low, and the construction cost is favorably reduced.
Wherein, place basis 1 after the foundation ditch and to first skeleton 11 before installing pier stud 2 can also include the step: installing a connecting piece 21 on the first framework 11 foundation 1, then pouring concrete to wrap the foundation 1 to obtain a first wrapping layer 4, pre-connecting the pier stud 2 to the connecting piece 21, and then pouring concrete to wrap the lower end of the pier stud 2 and the connecting piece 21 again to obtain a second wrapping layer 5. For example, when the first wrapping layer 4 is formed, the concrete may sink over (i.e., cover) the top surface of the first framework 11 and wrap part of the connecting member 21, but the upper part of the connecting member 21 is exposed, and then the pier stud 2 is pre-connected to the upper part of the connecting member 21, before the concrete is poured for the second time, a cylinder mold may be sleeved on the lower end of the pier stud 2, and the concrete poured for the second time wraps the lower end of the pier stud 2 (at this time, if a part of the concrete and the connecting member 21 is exposed, the concrete poured for the second time also wraps the exposed connecting member 21 at the same time), and after the concrete poured for the second time is solidified, the cylinder mold may be removed. Construction is thereby simplified while facilitating enhanced load bearing capacity and reliability of the track support assembly 100.
In a specific example of the first embodiment, as shown in fig. 15, the assembling method of the rail supporting assembly 100 can be further more specifically subdivided into: excavation is suitable for the foundation ditch of placing first skeleton 11, utilize dry operation drilling process to drill out the stake hole in the bottom surface of foundation ditch, lay the steel reinforcement cage in the stake hole, put into the foundation ditch with each girder steel in the basis 1 in proper order, link together each girder steel again, and to 1 erection joint spare 21 of basis, obtain stake 32, roof beam 31 through the mode of high-pressure slip casting construction, the top surface that the first skeleton 11 is crossed to the concrete simultaneously is in order to form first wrapping layer 4, again with pier stud 2 pre-connection in connecting piece 21, then the lower extreme of pouring the concrete again and wrapping up pier stud 2 obtains second wrapping layer 5.
Of course, in other examples of the first embodiment, as shown in fig. 16, the piles 32 may not be provided in the foundation pit, and it is understood that the design may be adjusted according to the soft ground, and the piles 32 may be provided in the foundation pit to enhance the bearing capacity of the foundation when the ground is soft, and the piles 32 may not be provided in the foundation pit when the ground is hard.
Example two
As shown in fig. 8 and 17, when the track support assembly 100 includes the first frame 11 and the second frame 12, but does not include the pile foundation 3, the assembling method of the track support assembly 100 may include the steps of: and excavating a foundation pit, sinking the first framework 11 and the second framework 12 in the foundation pit, and installing the pier stud 2 on the first framework 11.
It can be understood that, compared with the conventional rectangular parallelepiped foundation, the method for assembling the track support assembly 100 according to the embodiment of the present invention can reduce the excavated area, has less damage to the underground space between the first beam 111 and the second beam 112, is beneficial to reducing the works such as large-scale pipeline relocation and greening transplantation, is beneficial to shortening the construction period, and reduces the influence on site traffic.
Placing the first framework 11 and the second framework 12 in the foundation pit specifically may include: the steel beams in the first framework 11 and the second framework 12 are sequentially placed into the foundation pit, and then the steel beams are connected together. Therefore, the construction difficulty is low, and the construction cost is favorably reduced.
Wherein, place basis 1 after the foundation ditch and to first skeleton 11 before installing pier stud 2 can also include the step: installing a connecting piece 21 on the first framework 11 foundation 1, then pouring concrete to wrap the foundation 1 to obtain a first wrapping layer 4, pre-connecting the pier stud 2 to the connecting piece 21, and then pouring concrete to wrap the lower end of the pier stud 2 and the connecting piece 21 again to obtain a second wrapping layer 5. For example, when the first wrapping layer 4 is formed, the concrete may sink over (i.e., cover) the top surface of the first framework 11 and wrap part of the connecting member 21, but the upper part of the connecting member 21 is exposed, and then the pier stud 2 is pre-connected to the upper part of the connecting member 21, before the concrete is poured for the second time, a cylinder mold may be sleeved on the lower end of the pier stud 2, and the concrete poured for the second time wraps the lower end of the pier stud 2 (at this time, if a part of the concrete and the connecting member 21 is exposed, the concrete poured for the second time also wraps the exposed connecting member 21 at the same time), and when the concrete poured for the second time is solidified, the cylinder mold may be removed. Construction is thereby simplified while facilitating enhanced load bearing capacity and reliability of the track support assembly 100.
Next, a track 1000 according to an embodiment of the second aspect of the invention is described.
As shown in fig. 14, a track 1000 according to an embodiment of the second aspect of the present invention comprises: a track beam 200 and a track support assembly 100 according to an embodiment of the first aspect of the invention, the track beam 200 is erected on the abutment 2. The rail beam 200 is erected on the pier 2 to support the rail beam 200 by the rail support assembly 100. Among them, since the excavated area of the rail supporting assembly 100 is small, the damage to the underground space between the first beam 111 and the second beam 112 is small, and the construction period is short, so that the rapid laying of the rail 1000 can be realized.
Next, a rail transit system 10000 according to an embodiment of the third aspect of the present invention is described.
As shown in fig. 14, a rail transit system 10000 according to an embodiment of the third aspect of the present invention includes: train 2000 and track 1000 according to an embodiment of the second aspect of the invention, train 2000 running along track 1000. Among them, since the excavated area of the rail supporting assembly 100 is small, the damage to the underground space between the first beam 111 and the second beam 112 is small, and the construction period is short, so that the rapid laying of the rail 1000 can be realized.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (25)
1. A track support assembly, comprising:
the foundation comprises a first framework suitable for being sunk in a foundation pit, the first framework comprises a first beam and a second beam, and the first beam and the second beam have different extension directions and are connected in an intersecting manner;
the pier stud, the pier stud support is in on the basis and with first skeleton links to each other.
2. The track support assembly of claim 1, wherein the second beam extends in a direction perpendicular to the direction of extension of the first beam.
3. The track support assembly of claim 1, wherein one end of the second beam meets a middle portion of the first beam.
4. The track support assembly of claim 1, wherein the second beams are two and distributed on both sides of the first beam in the width direction, and one end of each of the second beams is connected to the intersection of the first beams.
5. The track support assembly of claim 4, wherein the centerlines of the two second beams are collinear.
6. The track support assembly of claim 1, wherein the pier is connected at a location where the first beam and the second beam meet.
7. The track support assembly of claim 1, wherein a central axis of the pier is coincident with a vertical centerline of the first frame.
8. The track support assembly of claim 1, wherein the bottom surface of the first frame is a horizontal surface, and the height of the first frame at which the pier is installed is greater than the height H2 of the edge of the first frame.
9. The track support assembly of claim 1, wherein the first and second beams are steel beams.
10. The track support assembly of any one of claims 1-9, further comprising:
a pile foundation including a beam connecting free ends of at least one of the first and second beams.
11. The track support assembly of claim 10, wherein the pile foundation further comprises a pile, the upper end of the pile being connected to the beam, the pile being formed by a dry-work drilling and grouting process, the beam being formed by a grouting process and surrounding the respective free end.
12. The track support assembly of any one of claims 1 to 9, wherein the foundation further comprises a second framework adapted to be sunk in a foundation pit, the second framework being disposed around and connected to the first framework.
13. The track support assembly of claim 12, wherein the second beams are two and distributed on both sides of the first beam in the width direction, the center lines of the two second beams are collinear and perpendicular to the center line of the first beam, the second frame includes two third beams and two fourth beams, the two third beams are both arranged in parallel with the second beam, the two fourth beams are both arranged in parallel with the first beam, and wherein the two third beams and the two fourth beams are connected end to end in sequence to form a rectangle.
14. The track support assembly of claim 13 wherein the two free ends of the first beam are connected to the middle portions of the two third beams, respectively, and the two free ends of the second beam are connected to the middle portions of the two fourth beams, respectively.
15. The track support assembly of claim 13, wherein at least one of the first, second, third, and fourth beams is formed from a steel section and includes a wing, a web, and a stiffener connected between the wing and the web, at least one of the web and the stiffener having a first shear member disposed thereon.
16. The track support assembly of claim 13, wherein the third beam and the fourth beam are each steel beams.
17. The track support assembly of claim 1, further comprising:
the first wrapping layer is a concrete layer and wraps the foundation.
18. The track support assembly of claim 1, wherein the pier is pre-connected to the first frame by a connector.
19. The track support assembly of claim 18, further comprising:
and the second wrapping layer at least wraps the lower end of the pier stud.
20. The track support assembly of claim 19 wherein the lower end side of the pier is provided with a second shear member.
21. A track, comprising: a rail beam and a rail support assembly as claimed in any one of claims 1 to 20, the rail beam being erected on the pier.
22. A rail transit system, comprising: a train and a track according to claim 21, the train running along the track.
23. A method of assembling a track support assembly according to claim 10 or 11, the method comprising the steps of:
and excavating a foundation pit, namely sinking the first framework in the foundation pit, manufacturing the pile foundation, and installing the pier stud to the first framework.
24. A method of assembling a track support assembly according to any one of claims 12 to 16, the method comprising the steps of:
and excavating a foundation pit, wherein the first framework and the second framework are arranged in the foundation pit in a sinking way, and the pier stud is installed on the first framework.
25. A method of assembling a track support assembly according to claim 23 or claim 24, further comprising, prior to installing the pier to the first frame, the steps of: and installing a connecting piece on the first framework, pouring concrete to wrap the foundation, pre-connecting the pier stud to the connecting piece, and pouring concrete to wrap the lower end of the pier stud.
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| CN201910577898.1A CN112144329A (en) | 2019-06-28 | 2019-06-28 | Track support assembly, assembly method thereof, track and track traffic system |
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| CN201910577898.1A CN112144329A (en) | 2019-06-28 | 2019-06-28 | Track support assembly, assembly method thereof, track and track traffic system |
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