CN114318965B - Traffic track vibration reduction structure and implementation method thereof - Google Patents
Traffic track vibration reduction structure and implementation method thereof Download PDFInfo
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- CN114318965B CN114318965B CN202210146563.6A CN202210146563A CN114318965B CN 114318965 B CN114318965 B CN 114318965B CN 202210146563 A CN202210146563 A CN 202210146563A CN 114318965 B CN114318965 B CN 114318965B
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Abstract
The application discloses a traffic track vibration reduction structure and an implementation method thereof.A strip-shaped bag vibration reduction and isolation layer with a vibration reduction and isolation spring system is arranged between an upper bottom plate and a lower bottom plate, and damping liquid is pressurized, so that the vibration reduction treatment can be carried out on the load borne by the track on the upper part; the rigidity of the vibration reduction and isolation spring system can be adjusted according to actual conditions, and the filling amount of the damping liquid can be increased or decreased according to the vibration conditions of the surrounding environment caused by the actual operation of the subway; the structure is convenient to construct, the original structure of the subway station can not be damaged, and the safe operation of the train can be ensured on the basis of ensuring the safety and facilitating the construction. The method can effectively reduce the uneven settlement of the subway tunnel caused by vibration during the operation of the subway in the subway tunnel with the unstable soil layer, thereby avoiding the further damage of the subway tunnel; in addition, ground vibration caused by the operation of the subway tunnel can be effectively reduced, and adverse effects on the life of residents and the operation of instruments in surrounding buildings are greatly reduced.
Description
Technical Field
The application relates to the technical field of traffic facilities, in particular to a traffic track vibration reduction structure and an implementation method thereof.
Background
With the further advance of the urbanization process of China, the utilization of overground space is saturated day by day, and the reasonable development of urban underground space is a subject of the 21 st century. By 2019, 41 cities in China have built rail traffic, the total length of the built rail traffic line is 6058.90 kilometers, the subway occupancy in the built rail traffic is 85.34%, 49 cities still build rail traffic, the building length is 5594.08 kilometers, and the subway occupancy in the built rail traffic is 92.74%. The rapid development of the subway supports the expansion and the high-speed development of the city, and provides efficient and quick selection for the travel and the commute of urban population.
Meanwhile, the rapidly developed rail transit matching technology is not mature, and the problem of vibration in the subway operation process is one of common factors in most subway disasters. The main reasons for vibration are: when a train runs, due to various factors such as non-uniform pavement and flatness of the tracks, the interaction between the wheels and the tracks can generate vibration, and the vibration of surface buildings is further caused through the track foundation, the tunnel segments and the soil body. Mutual vibration between the wheel rails not only has great influence on the service life of the whole rail transit system, but also has great adverse effect on people and buildings due to vibration transmitted to the ground surface. For the track traffic system, because contact rigidity is big, the long-time mutual contact and the collision of wheel and track will lead to round flat wheel loss, and the rail can produce wavy wearing and tearing, and the fastener appears that the large tracts of land is not hard up, drops, cracked phenomenon, is in the subway tunnel section of jurisdiction on weak soil layer simultaneously, and the section of jurisdiction vibration will directly lead to the tunnel to produce inhomogeneous settlement, and then leads to a series of incident. Meanwhile, vibration excitation generated in areas such as a pedestrian flow dense area, a building stand downtown area, a scenic area, a scientific park and the like of a city through which a subway line passes has great influence on normal service of the building, and meanwhile threats can be caused to the health of surrounding residents.
The track installation vibration reduction and isolation is a control method for forming the vibration level of the whole area of a track at the bottom of a subway through installing a flexible foundation, reduces the strength of the subway vibration at a vibration source end through the track installation vibration reduction and isolation, is suitable for the joint of a steel rail and a sleeper at present, predicts the vibration caused by the subway operation in the early stage of design, and needs to be replaced again if the requirement is found to be not met in the subway operation process.
Therefore, a vibration reduction and isolation structure or a vibration reduction and isolation layer which can be adjusted according to the vibration condition during subway operation is needed.
Disclosure of Invention
The present application mainly aims to provide a traffic track vibration damping structure and an implementation method thereof, so as to solve the current problems.
In order to achieve the above object, the present application provides the following techniques:
the first aspect of the application provides a traffic track vibration reduction structure, which comprises a steel rail, a sleeper, an upper base plate and a lower base plate, wherein the steel rail is fixedly arranged on the top surface of the sleeper; further comprising:
the mounting groove is formed in the lower bottom plate, and the upper bottom plate is mounted in the mounting groove in a matched mode;
the strip-shaped bag vibration reduction and isolation layer is arranged in the mounting groove and is attached between the upper bottom plate and the lower bottom plate;
and the damping liquid filling port is arranged on the vibration reduction and isolation layer of the strip-shaped bag and is used for filling damping liquid into the vibration reduction and isolation layer of the strip-shaped bag in a pressurizing manner through the damping liquid filling port.
As an optional embodiment of the present application, optionally, the vibration reducing and isolating layer of the strip-shaped bag includes:
the bottom strip-shaped bag vibration reduction and isolation layer is attached between the lower surface of the upper bottom plate and the lower bottom plate;
the side strip-shaped bag vibration reduction and isolation layer is attached between the left side surface and the right side surface of the upper bottom plate and the lower bottom plate;
the high-strength pipe is connected between the bottom strip-shaped bag vibration reduction and isolation layer and the side strip-shaped bag vibration reduction and isolation layer;
the damping liquid filling port is arranged on the vibration reduction and isolation layer of the side strip-shaped bag, and damping liquid enters the vibration reduction and isolation layer of the side strip-shaped bag through the damping liquid filling port and flows to the vibration reduction and isolation layer of the bottom strip-shaped bag through the high-strength pipe.
As an optional embodiment of the present application, optionally, the method further includes:
and the vibration reduction and isolation spring systems are uniformly arranged between the upper bottom plate and the lower bottom plate and penetrate through the strip-shaped bag vibration reduction and isolation layer.
As an optional embodiment of the present application, optionally, the method further includes:
the bar-shaped bag preformed holes are uniformly arranged on the vibration reduction and isolation layer of the bar-shaped bag;
the vibration reducing and isolating spring system is matched to penetrate through the preformed hole of the strip-shaped bag and is supported between the lower surface of the upper bottom plate and the lower bottom plate.
As an optional embodiment of the present application, optionally, the method further includes:
the bolt holes are respectively arranged on the upper bottom plate and the lower bottom plate and correspond to the preformed holes of the strip-shaped bags;
the vibration reduction and isolation spring system penetrates through the strip-shaped bag preformed hole in a matched mode, and two ends of the vibration reduction and isolation spring system are respectively in threaded connection with the bolt holes in the upper base plate and the lower base plate.
As an optional embodiment of the present application, optionally, the vibration damping and isolating spring system comprises:
the upper end bolt is used for fixing the upper end of the vibration reduction and isolation spring system at a bolt hole on the upper bottom plate;
the lower end bolt is used for fixing the lower end of the vibration reduction and isolation spring system at a bolt hole on the lower bottom plate;
and the high-strength spring is fixed between the upper end bolt and the lower end bolt.
As an optional embodiment of the present application, optionally, the vibration damping and isolating spring system further includes:
and the metal spacer bush is fixed between the upper end bolt and the lower end bolt and is positioned outside the high-strength spring.
As an optional embodiment of the present application, optionally, the metal spacer comprises:
and the plurality of spacer sleeves are sequentially sleeved and clamped with each other.
As an optional embodiment of the present application, optionally, the bottom strip-shaped bag vibration damping and isolating layer comprises:
the right part of the vibration reduction and isolation layer of the strip-shaped bag is attached between the lower surface of the right part of the upper bottom plate and the lower bottom plate; damping fluid enters through the damping fluid filling port on the vibration reduction and isolation layer of the lateral strip-shaped bag on the right side, and flows to the right part of the vibration reduction and isolation layer of the strip-shaped bag through the high-strength pipe;
the left part of the vibration reduction and isolation layer of the strip-shaped bag is attached between the lower surface of the left part of the upper bottom plate and the lower bottom plate; damping fluid enters through the damping fluid filling port on the left side bar-shaped bag vibration reduction and isolation layer, and flows to the left part of the bar-shaped bag vibration reduction and isolation layer through the high-strength pipe.
The second aspect of the present application provides an implementation method of the above-mentioned traffic track vibration damping structure, including the following steps:
s100, acquiring a frequency value f of vibration generated by interaction of wheels and a track of a train when the train runs and a frequency value f2 of vibration of tunnel segments caused by train vibration;
s200, determining a frequency value f3 causing the vibration of the surrounding building according to the frequency value f and the frequency value f 2;
s300, determining the filling amount of the damping liquid in the vibration reduction and isolation layer of the strip-shaped bag and the arrangement number and planning of the vibration reduction and isolation layer of the strip-shaped bag along the longitudinal direction of the track according to preset calculation conditions and the frequency values;
s400, presetting an installation sequence, and installing and constructing the traffic track vibration reduction structure according to the installation sequence.
Compared with the prior art, this application can bring following technological effect:
1. according to the vibration reduction and isolation system, the strip-shaped bag vibration reduction and isolation layer with the vibration reduction and isolation spring system is arranged between the upper bottom plate and the lower bottom plate, and the equal volume of damping liquid is filled into the strip-shaped bag vibration reduction and isolation layer in a pressurizing mode, so that vibration reduction treatment can be carried out on the load borne by the upper rail; the rigidity of the vibration reduction and isolation spring system can be adjusted according to actual conditions, and the filling amount of the damping liquid can be increased or decreased according to the vibration conditions of the surrounding environment caused by the actual operation of the subway; the structure is convenient to construct, the original structure of the subway station can not be damaged, and the safe operation of the train can be ensured on the basis of ensuring the safety and facilitating the construction. The method can effectively reduce the uneven settlement of the subway tunnel caused by vibration during the operation of the subway in the subway tunnel with the unstable soil layer, thereby avoiding the further damage of the subway tunnel; in addition, ground vibration caused by the operation of the subway tunnel can be effectively reduced, and adverse effects on the life of residents and the operation of instruments in surrounding buildings are greatly reduced.
2. The active vibration reduction and isolation measures adopted for differential settlement sensitive sections with relatively poor soil layer stability can effectively and actively control vibration, and further reduce the uneven settlement of the subway tunnel. On the basis, the problem that the subway vibration causes adverse effects on the life of residents and the operation of instruments in surrounding buildings can be better solved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, are included 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 view of the arrangement of vibration damping and isolating layer according to the present invention;
FIG. 2 is a partially enlarged structural view of the left portion of the vibration reduction and isolation layer of the strip-shaped bag in FIG. 1;
FIG. 3 is an enlarged partial schematic view of the vibration damping and isolating spring system of FIG. 1;
FIG. 4 is a schematic view of a right part of the vibration reduction and isolation layer of the strip-shaped bag in FIG. 1;
FIG. 5 is a schematic top view of the vibration reduction and isolation layer of the bag strip of the present invention;
fig. 6 is a schematic structural diagram of the vibration damping and isolating spring system according to the present invention.
In the figure: 1. a tunnel segment; 2. a train; 3. a track; 4. a sleeper; 5. an upper base plate; 6. A lower base plate; 7. vibration reduction and isolation layers of the side strip-shaped bags; 8. a high strength tube; 9. the right part of the vibration reduction and isolation layer of the strip-shaped bag; 10. the left part of the vibration reduction and isolation layer of the strip-shaped bag; 11. a vibration reducing and isolating spring system; 12. reserving holes in the strip-shaped bags; 13. a damping fluid filling port; 14. an upper end bolt; 15. a high-strength spring; 16. A metal spacer sleeve; 17. lower end bolt, 18, mounting groove.
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. Moreover, 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 present application and its embodiments, and are not used 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 meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.
In addition, the term "plurality" shall mean two as well as more than two.
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 accompanying drawings in conjunction with embodiments.
Example 1
In the embodiment, a subway tunnel is taken as an example, and a traffic track damping structure is installed on the subway tunnel.
The first aspect of the application provides a traffic track vibration reduction structure, which comprises a steel rail 3, a sleeper 4, an upper base plate 5 and a lower base plate 6, wherein the steel rail 3 is fixedly arranged on the top surface of the sleeper 4, the sleeper 4 is fixedly arranged on the top surface of the upper base plate 5, and the upper base plate 5 is fixedly arranged on the top surface of the lower base plate 6;
as shown in fig. 1, a schematic view of an arrangement structure of a vibration reduction and isolation layer of a tunnel segment 1 is shown, and the installation and construction of a steel rail 3, a sleeper 4, an upper base plate 5 and a lower base plate 6 are not described again in detail; after the construction of the subway tunnel segment 1 is finished, a lower bottom plate 6 is laid on the upper portion of the segment, and the lower bottom plate 6 is laid in a full line.
Further comprising:
the mounting groove is formed in the lower bottom plate 6, and the upper bottom plate 5 is mounted in the mounting groove in a matched mode; in the present embodiment, as shown in fig. 2, a mounting groove 18 is reserved on the upper surface of the lower plate 6 for mounting the upper plate 5 after mounting the vibration damping layer of the strip-shaped bag. The cross section structure and the size of mounting groove need calculate according to the design of track project can.
The strip-shaped bag vibration reduction and isolation layer is arranged in the mounting groove and is attached between the upper bottom plate 5 and the lower bottom plate 6; in this embodiment, each vibration damping layer is composed of a bottom vibration damping layer disposed at the bottom of the upper plate 5 and a side vibration damping layer 7 disposed at both sides of the bottom vibration damping layer.
After the bar bag subtracts the vibration isolation layer installation, need satisfy following construction dimension to satisfy the bearing capacity requirement: the width is less than 2000mm, the vertical clearance between the upper bottom plate 5 and the lower bottom plate 6 is 100mm, and the left-right transverse clearance is 50 mm.
A strip-shaped bag vibration reduction and isolation layer capable of reducing vibration is arranged between the upper bottom plate 5 and the lower bottom plate 6, and unloading treatment can be carried out on the load borne by the upper part. Which requires damping in conjunction with a vibration damping spring system and a damping fluid, as will be described in more detail below.
And the damping liquid filling port 13 is arranged on the vibration reduction and isolation layer of the strip-shaped bag and is used for pressurizing and filling the same volume of damping liquid into the vibration reduction and isolation layer of the strip-shaped bag through the damping liquid filling port 13. As shown in fig. 5, in the present embodiment, one damping fluid filling port 13 is provided on each of the left and right side strip-shaped bag vibration damping and isolating layers 7, and damping fluid is filled through the damping fluid filling ports 13 on the side strip-shaped bag vibration damping and isolating layers 7 to form vibration damping and isolating layers; damping fluid measure accessible subway actual operation vibration condition adjusts.
In this embodiment, as an optional implementation of the present application, optionally, the vibration damping and isolating layer of the strip-shaped bag includes:
the bottom strip-shaped bag vibration reduction and isolation layer is attached between the lower surface of the upper bottom plate 5 and the lower bottom plate 6;
the lateral strip-shaped bag vibration reduction and isolation layer 7 is attached between the left and right side surfaces of the upper bottom plate 5 and the lower bottom plate 6;
as shown in fig. 2 to 4, a bottom strip-shaped bag vibration reducing and isolating layer is disposed between the lower surface of the upper plate 5 and the lower plate 6, and a side strip-shaped bag vibration reducing and isolating layer 7 is disposed between the left and right side surfaces of the upper plate 5 and the lower plate 6. And respectively carrying out vibration reduction treatment on the bottom and the side.
The high-strength pipe 8 is connected between the bottom strip-shaped bag vibration reduction and isolation layer and the side strip-shaped bag vibration reduction and isolation layer 7; the right part 9 and the left part 10 of the vibration reduction and isolation layer of the strip-shaped bag are connected with the vibration reduction and isolation layer 7 of the side part strip-shaped bag at two sides through the high-strength pipe 8.
The damping liquid filling port 13 is formed in the lateral strip-shaped bag vibration reduction and isolation layer 7, and damping liquid enters the lateral strip-shaped bag vibration reduction and isolation layer 7 through the damping liquid filling port 13 and circulates to the bottom strip-shaped bag vibration reduction and isolation layer through the high-strength pipe 8.
As shown in fig. 1-5, the vibration damping and isolating layer of the bottom strip-shaped bag is a strip-shaped bag with a rectangular structure, and the middle partition is divided into a right part 9 of the vibration damping and isolating layer of the left strip-shaped bag and a left part 10 of the vibration damping and isolating layer of the strip-shaped bag. The number of which may be selected otherwise in other embodiments.
As an optional embodiment of the present application, optionally, the bottom strip-shaped bag vibration damping and isolating layer comprises:
the right part 9 of the vibration reduction and isolation layer of the strip-shaped bag is attached between the lower surface of the right part of the upper bottom plate 5 and the lower bottom plate 6; damping fluid enters through the damping fluid filling port 13 on the lateral strip-shaped bag vibration reduction and isolation layer 7 on the right side, and flows to the right part 9 of the strip-shaped bag vibration reduction and isolation layer through the high-strength pipe 8;
the left part 10 of the vibration reduction and isolation layer of the strip-shaped bag is attached between the lower surface of the left part of the upper bottom plate 5 and the lower bottom plate 6; damping fluid enters through the damping fluid filling port 13 on the left side strip-shaped bag vibration reduction and isolation layer 7, and flows to the left part 10 of the strip-shaped bag vibration reduction and isolation layer through the high-strength pipe 8.
And damping liquid is filled into the small-size parts at two sides through the damping liquid filling port 13, and enters the strip-shaped bag at the lower part through the high-strength pipe. When the orbital vibration frequency of modulation, need the adjustment to subtract the vibration isolation layer, subtract vibration isolation layer 7 injection damping liquid through both sides lateral part bar bag, increase bar bag and subtract vibration isolation layer right part 9 and bar bag and subtract vibration isolation layer left part 10 height, if still unsatisfied the requirement, need to change the bigger spring system of damping ratio.
As shown in fig. 1-4, for further damping. As an optional embodiment of the present application, optionally, the method further includes:
and the vibration reduction and isolation spring systems 11 are uniformly arranged between the upper bottom plate 5 and the lower bottom plate 6 and penetrate through the strip-shaped bag vibration reduction and isolation layer.
In this embodiment, the vibration damping and isolating spring system 11 is disposed between the upper and lower bottom plates, so as to perform vibration damping treatment on the load borne by the upper bottom plate and reduce vibration. The vibration damping and isolating spring system 11 may be provided between the upper plate side and the lower plate and between the upper plate bottom and the lower plate. In this embodiment, the vibration damping and isolating spring system 11 is preferably disposed between the bottom surface of the upper plate and the lower plate. When the damping vibration reduction adjustment is not enough, if the project requirement is still not met, the vibration reduction and isolation spring system 11 with larger damping ratio is added. The vibration of transmission to section of jurisdiction when effectively reducing subway operation, and then reduce and arouse the differential settlement in tunnel by the section of jurisdiction vibration, avoid subway tunnel's further destruction, can reduce by a wide margin the adverse effect that resident life, instrument operation caused in the peripheral building simultaneously.
In order to install the vibration damping and isolating spring system 11, as shown in fig. 1 to 5, as an optional embodiment of the present application, optionally, the vibration damping and isolating spring system further includes:
the bar-shaped bag preformed holes 12 are uniformly arranged on the vibration reduction and isolation layer of the bar-shaped bag;
as shown in fig. 5, five preformed holes 12 for the strip-shaped bags are uniformly formed on the vibration damping and isolating layer of the strip-shaped bag at the bottom for installing five vibration damping and isolating spring systems 11.
The vibration reducing and isolating spring system 11 is fitted through the bar-shaped bag preparation hole 12 and supported between the lower surface of the upper plate 5 and the lower plate 6.
In this embodiment, the upper and lower ends of the vibration isolation spring system 11 are in a threaded connection structure and are used for being fixed on the upper bottom plate 5 and the lower bottom plate 6. In order to fix the upper and lower ends of the vibration damping and isolating spring system 11, as an optional embodiment of the present application, optionally, the vibration damping and isolating spring system further includes:
the bolt holes are respectively arranged on the upper bottom plate 5 and the lower bottom plate 6 and correspond to the strip-shaped bag preformed holes 12;
the vibration reduction and isolation spring system 11 is matched to penetrate through the strip-shaped bag preformed hole 12, and two ends of the vibration reduction and isolation spring system are respectively screwed in bolt holes in the upper bottom plate 5 and the lower bottom plate 6.
On upper plate and the lower plate, be equipped with the bolt hole that corresponds the position of bar bag preformed hole 12, the upper and lower both ends threaded connection end of vibration isolation spring system 11 is when corresponding the spiro union in the spiro union is downthehole, in the upper end bolt installation, realizes that the lower extreme bolt is installed simultaneously.
In the embodiment, the right part 9 of the vibration damping and isolating layer of the strip-shaped bag and the left part 10 of the vibration damping and isolating layer of the strip-shaped bag are fixed at the appointed position of the lower base plate according to the design, and the preformed hole 12 of the strip-shaped bag corresponds to the bolt hole at the lower part. Bolt holes are reserved in the corresponding positions of the upper base plate and the lower base plate respectively, and the lower end bolts can be installed simultaneously in the installation process of the upper end bolts. For synchronous connection, the upper end bolt 14 and the lower end bolt 17 are of opposite thread design.
As shown in fig. 6, as an alternative embodiment of the present application, optionally, the vibration damping and isolating spring system 11 includes:
an upper end bolt 14 for fixing the upper end of the vibration damping and isolating spring system 11 at a bolt hole on the upper base plate 5;
a lower end bolt 17 for fixing the lower end of the vibration damping and isolating spring system 11 at a bolt hole on the lower bottom plate 6;
and a high-strength spring 15 fixed between the upper end bolt 14 and the lower end bolt 17.
The upper end and the lower end of the high-strength spring 15 are welded and fixed between the upper end bolt 14 and the lower end bolt 17, and are arranged in the strip-shaped bag preformed hole 12 in a penetrating mode in a matching mode and used for unloading and vibration reduction of the upper base plate.
As an optional embodiment of the present application, optionally, the vibration damping and isolating spring system 11 further includes:
and a metal spacer 16 fixed between the upper end bolt 14 and the lower end bolt 17 and located outside the high-strength spring 15.
In order to stabilize the high-strength spring 15 in an oriented manner and improve the elastic damping effect, a telescopic metal spacer 16 is arranged outside the high-strength spring 15, and the metal spacer 16 is sleeved outside the high-strength spring 15 and welded between the upper end bolt 14 and the lower end bolt 17.
As an alternative embodiment of the present application, optionally, the metal spacer 16 comprises:
and the plurality of spacer sleeves are sequentially sleeved and clamped with each other.
As shown in fig. 6, in the present embodiment, one of the retractable metal spacers 16 has the following structure: the metal spacer 16 is divided into 4 sections, each section is 25mm in length, the diameter of the lowest section is 90mm, the lower part of each section is designed to be buckled outwards, the upper part of each section is designed to be buckled inwards, and the ascending and descending of the upper stage spacer can drive the next stage spacer.
In this embodiment, a preferred vibration damping and isolating spring system 11 has the following technical requirements: the maximum compression amount of the vibration reduction and isolation spring system 11 is 75 mm; the transverse spacing of the vibration reduction and isolation spring system 11 is 300 mm; the maximum diameter is 90mm, the minimum diameter is 80mm, and the height is 100 mm; the compression ratio range of the high-strength spring 15 can be 0.5-0.8, and the design is carried out according to the actual bearing condition.
In the specific implementation:
the upper bottom plate 5 is prefabricated and hoisted on site;
the vibration reducing and isolating spring system 11 is sequentially arranged from the middle of the lower bottom plate 6 to two sides, aligns to the bolt holes of the upper bottom plate 5, and simultaneously arranges the upper end and the lower end through torsion;
a sleeper 4 is laid on the upper part of the upper bottom plate 5, and a track 3 is laid on the upper part of the sleeper 4;
equal-volume damping liquid is filled in a pressurized mode through a damping liquid filling port 13 at the top end of the strip-shaped bag vibration reduction and isolation layer 7 at the two side portions, the damping liquid enters the right portion 9 of the strip-shaped bag vibration reduction and isolation layer and the left portion 10 of the strip-shaped bag vibration reduction and isolation layer through the high-strength pipe 8, and the construction of the vibration reduction and isolation layer is finished;
the damping fluid in the right part 9 and the left part 10 of the vibration reducing and isolating layer of the strip-shaped bag flows to the side strip-shaped bag vibration reducing and isolating layer 7 at two sides through the high-strength pipe 8;
the upper base plate 5 inclines, damping liquid of the vibration reduction and isolation layers 7 of the strip-shaped bags on the two sides increases to prevent the trend, the strip-shaped bags on the two sides are extruded by the upper base plate 5, the vibration reduction and isolation layers 7 of the strip-shaped bags on the two sides are restored to the original state, and redundant damping liquid flows to the right part 9 of the vibration reduction and isolation layers of the strip-shaped bags and the left part 10 of the vibration reduction and isolation layers of the strip-shaped bags to restore the vibration reduction and isolation layers to the static state. Damping fluid measure accessible subway actual operation vibration condition adjusts.
By adopting the technology, the rigidity of the vibration reduction and isolation spring system can be adjusted according to the actual situation, and the filling amount of the damping liquid can be increased or decreased according to the vibration situation of the surrounding environment caused by the actual operation of the subway; the structure is convenient to construct, the original structure of the subway can not be changed, and the safe operation of the train can be guaranteed on the basis of guaranteeing safety and facilitating construction. The method can effectively reduce the uneven settlement of the subway tunnel caused by vibration during the operation of the subway in the subway tunnel with the unstable soil layer, thereby avoiding the further damage of the subway tunnel; in addition, ground vibration caused by the operation of the subway tunnel can be effectively reduced, and adverse effects on the life of residents and the operation of instruments in surrounding buildings are greatly reduced.
The vibration reduction and isolation layer for the subway tunnel and the manufacturing method thereof have the advantages of good vibration reduction and isolation effect, low cost, simple construction process and easiness in implementation. The active vibration reduction and isolation measures adopted in the differential settlement sensitive section with relatively poor soil layer stability can effectively and actively control vibration, so that the uneven settlement of the subway tunnel is reduced. On the basis, the problem that the vibration of the subway can cause adverse effects on the life of residents in surrounding buildings and the operation of instruments can be better solved.
In specific implementation, the vibration reduction structure provided by the technology is not limited by traffic environments or traffic facilities such as subway tunnels, and the like, and the vibration reduction structure can be used for track vibration reduction as long as the vibration reduction structure can be used for track vibration reduction. The specific implementation may be adjusted according to the corresponding item.
Example 2
Based on the vibration reduction structure of embodiment 1, this embodiment provides an arrangement process of the vibration reduction and isolation layer of the tunnel segment.
The second aspect of the present application provides an implementation method of the above traffic track vibration damping structure, including the following steps:
s100, acquiring a frequency value f of vibration generated by interaction of wheels of a train 2 and a track 3 and a frequency value f2 of tunnel segment vibration caused by the vibration of the train 2 when the train runs;
s200, determining a frequency value f3 causing the vibration of the surrounding building according to the frequency value f and the frequency value f 2;
s300, determining the filling amount of the damping liquid in the vibration reduction and isolation layer of the strip-shaped bags and the arrangement number and planning of the vibration reduction and isolation layer of the strip-shaped bags along the longitudinal direction of the track 3 according to preset calculation conditions and the frequency values; the preset calculation condition may be set according to the project requirement, and is not particularly limited in this place.
And S400, carrying out the installation sequence according to the project design progress and the construction sequence, wherein the process is not particularly limited.
In this embodiment, one specific implementation is as follows: in the subway movement process, the range of the vibration frequency f generated by the interaction of the wheels of the subway train 2 and the track 3 is collected, and the vibration frequency f of the tunnel segment is 2 caused by the vibration frequency f and the operation vibration of the subway train 2, so that the vibration frequency f3 of surrounding buildings is caused. Determining the filling amount of damping liquid in the strip-shaped bag vibration reduction and isolation layer and the arrangement number and arrangement plan of the strip-shaped bag vibration reduction and isolation layer along the longitudinal direction of the rail; the bottom plate is divided into an upper bottom plate 5 and a lower bottom plate 6, and the prefabrication is completed. After the construction of the subway tunnel segment 1 is completed, a lower bottom plate 6 is installed, and a bar-shaped bag vibration reduction and isolation layer at the bottom is laid; the strip-shaped bag vibration reduction and isolation layers on the two sides are fixed on the two sides of the bottom plate; the upper bottom plate 5 is hoisted, the vibration reduction and isolation spring system 11 is sequentially tightened from inside to outside, and after the installation is finished, damping liquid is injected into the vibration reduction and isolation layer 7 through the strip-shaped bags at the two sides to form a vibration reduction and isolation layer; damping fluid measure accessible subway actual operation vibration condition adjusts.
Repeating the operation, and performing the shield construction of the next section of the subway tunnel until the construction of the main body of the subway tunnel is completed.
Recording the range of the vibration frequency f generated by the interaction between the wheels and the subway track when the train runs and the settlement of the tunnel segment 1, and analyzing according to the soil information and the geological characteristics. If the tunnel segment subsides unsatisfied requirement, or cause the frequency of vibration f3 unsatisfied requirement of peripheral building, need the adjustment to subtract the vibration isolation layer, subtract vibration isolation layer 7 injection damping liquid through both sides lateral part bar bag, increase bar bag and subtract vibration isolation layer right part 9 and bar bag and subtract vibration isolation layer left part 10 height, if still unsatisfied requirement, need to change the bigger spring system of damping ratio.
The working principle of the invention is as follows:
the lower bottom plate 6 is laid on the top of the tunnel segment 1, the right part 9 of the bar-shaped bag vibration reduction and isolation layer and the left part 10 of the bar-shaped bag vibration reduction and isolation layer are laid at the designated positions of the lower bottom plate, the distance between the bar-shaped bags needs to meet the bearing capacity requirement, the lateral bar-shaped bag vibration reduction and isolation layers 7 are arranged on two sides of the concave position of the lower bottom plate 6 and are connected with the bar-shaped bags through high-strength pipes 8, a vibration reduction and isolation system 11 is arranged in a bar-shaped bag preformed hole 12 to connect the upper bottom plate 5 with the lower bottom plate 6, a sleeper 4 is laid on the upper part of the upper bottom plate 5, a rail 3 is laid on the sleeper and filled with damping liquid, and the damping liquid amount can be adjusted according to the actual situation; the shock insulation layer can increase operation tunnel train bottom damping ratio, effectively reduces the vibration of transmission to tunnel section of jurisdiction 1 during the subway operation, and then reduces and arouses the inhomogeneous settlement in tunnel by section of jurisdiction 1 vibration, avoids the further destruction in subway tunnel, can reduce the adverse effect that resident life, instrument operation caused in the peripheral building by a wide margin simultaneously.
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 (9)
1. The utility model provides a traffic track damping structure, includes rail, sleeper, upper plate and lower plate, the rail sets firmly on the sleeper top surface, the sleeper sets firmly on the upper plate top surface, the upper plate sets firmly on the lower plate top surface, its characterized in that still includes:
the mounting groove is arranged on the lower bottom plate, and the upper bottom plate is arranged in the mounting groove in a matching manner;
the strip-shaped bag vibration reduction and isolation layer is arranged in the mounting groove and is attached between the upper bottom plate and the lower bottom plate;
the damping liquid filling port is arranged on the vibration reduction and isolation layer of the strip-shaped bag and is used for filling damping liquid into the vibration reduction and isolation layer of the strip-shaped bag in a pressurizing manner through the damping liquid filling port; the vibration reduction and isolation layer of the strip-shaped bag comprises:
the bottom strip-shaped bag vibration reduction and isolation layer is attached between the lower surface of the upper bottom plate and the lower bottom plate;
the side strip-shaped bag vibration reduction and isolation layer is attached between the left side surface and the right side surface of the upper bottom plate and the lower bottom plate;
the high-strength pipe is connected between the bottom strip-shaped bag vibration reduction and isolation layer and the side strip-shaped bag vibration reduction and isolation layer;
the damping liquid filling port is arranged on the vibration reduction and isolation layer of the side strip-shaped bag, and damping liquid enters the vibration reduction and isolation layer of the side strip-shaped bag through the damping liquid filling port and flows to the vibration reduction and isolation layer of the bottom strip-shaped bag through the high-strength pipe.
2. A traffic track vibration damping structure as claimed in claim 1, further comprising:
and the vibration reduction and isolation spring systems are uniformly arranged between the upper bottom plate and the lower bottom plate and penetrate through the strip-shaped bag vibration reduction and isolation layer.
3. A traffic track vibration damping structure as claimed in claim 2, further comprising: the bar-shaped bag preformed holes are uniformly arranged on the vibration reduction and isolation layer of the bar-shaped bag;
the vibration reducing and isolating spring system is matched to penetrate through the preformed hole of the strip-shaped bag and is supported between the lower surface of the upper bottom plate and the lower bottom plate.
4. A traffic track vibration damping structure as claimed in claim 3, further comprising:
the bolt holes are respectively arranged on the upper bottom plate and the lower bottom plate and correspond to the preformed holes of the strip-shaped bags;
the vibration reduction and isolation spring system penetrates through the strip-shaped bag preformed hole in a matched mode, and two ends of the vibration reduction and isolation spring system are respectively in threaded connection with the bolt holes in the upper base plate and the lower base plate.
5. A track-engaging vibration-damping structure as claimed in claim 3, wherein said vibration-damping spring system comprises:
the upper end bolt is used for fixing the upper end of the vibration reduction and isolation spring system at a bolt hole on the upper bottom plate;
the lower end bolt is used for fixing the lower end of the vibration reduction and isolation spring system at a bolt hole on the lower bottom plate;
and the high-strength spring is fixed between the upper end bolt and the lower end bolt.
6. A track-engaging vibration-damping structure as claimed in claim 5, wherein said vibration-damping spring system further comprises:
and the metal spacer bush is fixed between the upper end bolt and the lower end bolt and is positioned outside the high-strength spring.
7. A traffic track vibration damping arrangement as claimed in claim 6 wherein said metal spacer comprises:
and the plurality of spacer sleeves are sequentially sleeved and clamped with each other.
8. A traffic track vibration damping structure as claimed in claim 1, wherein said bottom strip-shaped bag vibration damping and isolating layer comprises:
the right part of the vibration reduction and isolation layer of the strip-shaped bag is attached between the lower surface of the right part of the upper bottom plate and the lower bottom plate; damping fluid enters through the damping fluid filling port on the vibration reduction and isolation layer of the lateral strip-shaped bag on the right side, and flows to the right part of the vibration reduction and isolation layer of the strip-shaped bag through the high-strength pipe;
the left part of the vibration reduction and isolation layer of the strip-shaped bag is attached between the lower surface of the left part of the upper bottom plate and the lower bottom plate; damping fluid enters through the damping fluid filling port on the left side bar-shaped bag vibration reduction and isolation layer, and flows to the left part of the bar-shaped bag vibration reduction and isolation layer through the high-strength pipe.
9. A method for implementing a vibration damping structure for a traffic track according to any one of claims 1 to 8, comprising the steps of:
s100, acquiring a frequency value f of vibration generated by interaction of wheels and a track of a train when the train runs and a frequency value f2 of vibration of tunnel segments caused by train vibration;
s200, determining a frequency value f3 causing the vibration of the surrounding building according to the frequency value f and the frequency value f 2;
s300, determining the filling amount of the damping liquid in the vibration reduction and isolation layer of the strip-shaped bag and the arrangement number and planning of the vibration reduction and isolation layer of the strip-shaped bag along the longitudinal direction of the track according to preset calculation conditions and the frequency values;
s400, presetting an installation sequence, and installing and constructing a traffic track damping structure according to the installation sequence, wherein the traffic track damping structure is as claimed in any one of claims 1 to 8.
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| CN202210146563.6A CN114318965B (en) | 2022-02-17 | 2022-02-17 | Traffic track vibration reduction structure and implementation method thereof |
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| CN202210146563.6A CN114318965B (en) | 2022-02-17 | 2022-02-17 | Traffic track vibration reduction structure and implementation method thereof |
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| CN114541187B (en) * | 2022-04-14 | 2022-09-20 | 中国科学院地理科学与资源研究所 | Shock absorption and vibration isolation continuous barrier considering subway station and construction method thereof |
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| CN114318965A (en) | 2022-04-12 |
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