CN113699875A

CN113699875A - Super high shock attenuation pier structure of nearly fault railway

Info

Publication number: CN113699875A
Application number: CN202111034568.1A
Authority: CN
Inventors: 吴勇信; 张后乐; 舒爽; 宋轩
Original assignee: Nanjing Water Planning And Designing Institute Co ltd; Hohai University HHU
Current assignee: Nanjing Water Planning And Designing Institute Co ltd; Hohai University HHU
Priority date: 2021-09-03
Filing date: 2021-09-03
Publication date: 2021-11-26

Abstract

The invention discloses an ultrahigh shock absorption pier structure of a near fault railway, which belongs to the technical field of piers and comprises a pier body, wherein the pier body is divided into a pier body and a pier bottom, the pier body is positioned on the pier bottom, the horizontal cross section of the pier body is of a waist-round structure, the pier body comprises a left pier column, a middle pier column and a right pier column, and the left pier column, the middle pier column and the right pier column are all of hollow structures.

Description

Super high shock attenuation pier structure of nearly fault railway

Technical Field

The invention belongs to the technical field of piers, and particularly relates to an ultrahigh shock-absorbing pier structure of a near-fault railway.

Background

In recent years, the social and economic problems caused by earthquakes have led to increased attention being paid to structural seismic techniques. With the continuous extension and encryption of western areas of railway networks in China, the western areas are strong earthquake areas in China, a plurality of high pier bridges inevitably approach faults, and the earthquake action of the near faults is very easy to encounter during earthquake. Research has shown that, compared with conventional far-field seismic waves, near fault pulse seismic waves have significant long-period velocity pulse components, while the existing pier damping technology mainly aims at damping far-field seismic waves.

The railway bridge in the western mountain area needs to cross the western deep cut valley landform, and in addition, in order to avoid unfavorable geological conditions, the overall elevation of a line needs to be improved when the bridge is selected, so that the design of bridge piers of the valley-crossing bridge is higher and higher, and the bridge piers often reach a hundred-meter grade, and some ultrahigh bridge piers even exceed 150 m. The design of the railway bridge is controlled according to rigidity, and a single-column pier structure is often adopted when the traditional railway pier is designed. When the bridge pier high pier reaches a hundred-meter level, the single-column type high pier has a large self weight and high concrete consumption. Because the single-column high pier is heavy in self weight, great challenge is brought to the design of a lower bearing platform and a pile foundation, and the area of the bottom of the single-column high pier is large, so that more mountains are excavated when the bearing platform is built. The traditional single column structure has no advantage in high pier design from both economic and environmental protection perspectives. Therefore, the invention provides a novel railway high pier structure form, which not only can meet the high structure requirement, but also has better shock absorption performance under the action of a near fault impulse earthquake.

Disclosure of Invention

1. Technical problem to be solved by the invention

The object of the present invention is to solve the above mentioned drawbacks.

2. Technical scheme

In order to achieve the purpose, the technical scheme provided by the invention is as follows:

the ultrahigh shock absorption pier structure for the near fault railway comprises a pier body, wherein the pier body is divided into a pier body and a pier bottom, the pier body is located on the pier bottom, the horizontal cross section of the pier body is of a waist-round structure, the pier body comprises a left pier column, a middle pier column and a right pier column, and the left pier column, the middle pier column and the right pier column are all of hollow structures.

Preferably, a plurality of groups of transverse system supports are arranged in the middle pier column, and the transverse system supports are uniformly distributed in the middle pier column from top to bottom.

Preferably, the horizontal system support is a cross structure and comprises a middle fixer and a connecting plate, one end of the connecting plate is embedded into the pier body, and the other end of the connecting plate is rotatably connected with the middle fixer.

Preferably, the pier body is divided into an upper part and a lower part, the vertical section of the upper part is rectangular, the vertical section of the lower part is trapezoidal, and the upper part and the lower part are in smooth transition.

Preferably, the front and the back of pier shaft all are equipped with the maintenance passageway, and the maintenance passageway is equipped with along maintenance passageway distribution's maintenance device and connection bridge along pier shaft top-down in the maintenance passageway, and the maintenance device is all fixed in the maintenance passageway with connecting the bridge, and the maintenance device includes cat ladder, protecting wire net and fender post, and cat ladder and fender post all are located the protecting wire net, and maintenance device symmetry is installed in the maintenance passageway.

Preferably, be equipped with the elastic connector on the middle fixer, the connecting plate rotates with the elastic connector to be connected, and the elastic connector includes base, spring and T type connecting seat, and T type connecting seat passes through the spring to be fixed on the base, and the pedestal mounting is on the middle connector, and the one end of T template is fixed through the bolt on T type connecting seat.

Preferably, be equipped with in the pier shaft and survey the metal pole, survey one end and the connecting plate fixed connection of metal pole, the other end passes the pier shaft and outwards stretches out.

Preferably, be equipped with the reinforcing bar frame in the pier shaft, be equipped with E type structure on the connecting plate, E type structure and reinforcing bar frame contact, the upper end and the lower extreme of connecting plate all are equipped with the reinforcing bar frame.

3. Advantageous effects

Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects:

(1) the ultrahigh shock absorption pier structure for the near-fault railway is suitable for manufacturing piers in areas with large fall, can solve the pressure problem of ultrahigh height, and has the shock absorption effect and shock resistance and energy dissipation.

Drawings

FIG. 1 is a schematic structural diagram of an ultrahigh shock-absorbing pier structure of a near-fault railway of the invention;

FIG. 2 is a schematic diagram of a distribution structure of a pier body of the near-fault railway ultrahigh shock-absorption pier structure;

FIG. 3 is a schematic structural diagram of a transverse system support of the near-fault railway ultrahigh shock-absorption pier structure;

FIG. 4 is a schematic structural diagram of an overhauling device for the ultra-high damping pier structure of the near-fault railway, provided by the invention;

FIG. 5 is a cross sectional view at A of FIG. 4 of the super-high shock-absorbing pier structure of the near fault railway of the invention;

FIG. 6 is a partial enlarged view at B of FIG. 4 of the super-high shock-absorbing pier structure of the near fault railway of the present invention;

FIG. 7 is a schematic structural view of an elastic connector of the near-fault railway ultrahigh shock-absorption pier structure;

fig. 8 is a schematic structural view of an observation metal rod of the elastic connector of the near-fault railway ultrahigh shock-absorption pier structure.

The reference numerals in the schematic drawings illustrate:

100. a pier body; 110. a pier body; 111. a left pier stud; 112. a middle pier stud; 113. a right pier stud; 120. pier bottom; 130. a horizontal system support; 131. a middle holder; 132. a connecting plate; 140. overhauling the channel; 150. overhauling the device; 151. climbing a ladder; 152. a protection net; 153. a guard post; 160. a connecting bridge; 170. an elastic connector; 171. a base; 172. a spring; 173. a T-shaped connecting seat; 180. observing the metal rod; 190. an E-type structure; 191. and (4) reinforcing steel bar frames.

Detailed Description

In order to facilitate an understanding of the invention, the invention will now be described more fully hereinafter with reference to the accompanying drawings, in which several embodiments of the invention are shown, but which may be embodied in many different forms and are not limited to the embodiments described herein, but rather are provided for the purpose of providing a more thorough disclosure of the invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present; when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present; the terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs; the terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention; as used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Example 1

Referring to fig. 1-8, the super-high shock-absorbing pier structure for the near-fault railway of the present embodiment includes a pier body 100, the pier body 100 is divided into a pier body 110 and a pier bottom 120, the pier body 110 is located on the pier bottom 120, the horizontal cross section of the pier body 110 is a waist-round structure, the pier body 110 includes a left pier 111, a middle pier 112 and a right pier 113, the left pier 111, the middle pier 112 and the right pier 113 are hollow structures, the designed structure is applied to railway support of super-high floors, and due to the high height, the hollow structure can reduce the dead weight pressure.

Being equipped with multiunit violently in the well mound post 112 of this embodiment and being supported 130, violently supporting 130 top-down evenly distributed is in the inside of well mound post 112, and the structure of this design violently is supported 130, can support the intensity of inside cavity, avoids whole pier intensity not enough, and violently supports 130, can accept the pressure that pier self deformation brought, releases, avoids pressing the too big crackle that appears in.

The transverse system support 130 of the embodiment is a cross structure, the transverse system support 130 comprises a middle fixer 131 and a connecting plate 132, one end of the connecting plate 132 is embedded into the pier body 110, the other end of the connecting plate 132 is rotatably connected with the middle fixer 131, the pier body 110 is divided into an upper part and a lower part, the vertical cross section of the upper part is rectangular, the vertical cross section of the lower part is trapezoidal, and the upper part and the lower part are in smooth transition.

The front and the back of the pier body 110 of the embodiment are both provided with the maintenance channel 140, the maintenance channel 140 is arranged from top to bottom along the pier body 110, the maintenance device 150 and the connection bridge 160 distributed along the maintenance channel 140 are arranged in the maintenance channel 140, the maintenance device 150 and the connection bridge 160 are both fixed in the maintenance channel 140, the maintenance device 150 comprises a ladder stand 151, a protection net 152 and a protection column 153, the ladder stand 151 and the protection column 153 are both positioned in the protection net 152, the maintenance device 150 is symmetrically installed in the maintenance channel 140, the structure is designed, when a worker overhauls, the worker can climb upwards along the ladder stand 151, wherein a protection rope tied on the worker can be hung on the protection column 153 for protection, when the value falls, the protection net 152 further protects the worker, and the connection bridge 160 enables the worker to go to the right side from the left side to observe directly, and avoid climbing again from the bottom.

The elastic connector 170 is arranged on the middle fixer 131, the connecting plate 132 is rotatably connected with the elastic connector 170, the elastic connector 170 comprises a base 171, a spring 172 and a T-shaped connecting seat 173, the T-shaped connecting seat 173 is fixed on the base 171 through the spring 172, the base 171 is arranged on the middle connector, one end of the T-shaped plate is fixed on the T-shaped connecting seat 173 through a bolt, a plurality of elastic connectors 170 are arranged on the middle connector, the middle connectors adjacent in the vertical direction are connected through a fixing plate arranged on the elastic connector 170, two ends of the fixing plate are respectively fixedly connected with the elastic connectors 170 on different middle connectors, the designed structure connects a plurality of transverse supports 130, the overall strength is improved, meanwhile, the device has certain elastic deformation capacity, the pressure in the bridge pier can be reduced, and the pressure in the bridge pier can be released, avoid the crack to appear in the pier.

Be equipped with in the pier shaft of this embodiment and survey metal pole 180, survey metal pole 180's one end and connecting plate 132 fixed connection, the other end passes pier shaft 110 and outwards stretches out, the structure of this design, it stretches out pier shaft 110 to survey metal pole 180, the change of observing metal pole 180 and pier shaft 110 contact department is like the crackle this moment, the gap etc. and then know the internal conditions, when connecting plate 132 transmits sufficient power for surveying metal pole 180, survey metal pole 180 and pier shaft 110 contact department and can take place above-mentioned change, the dynamics is different, it is different to change, and then can know the harm degree that the earthquake caused the pier.

In the embodiment, a reinforcing frame 191 is provided in the pier body 110, an E-shaped structure 190 is provided on the connecting plate 132, the E-shaped structure 190 contacts with the reinforcing frame 191, and the reinforcing frame 191 is provided at the upper end and the lower end of the connecting plate 132.

With the design, when the E-shaped structure 190 on the connecting plate 132 is stressed, the reinforcing steel bar frame 191 can be pulled, and the reinforcing steel bar frame 191 is fixed in concrete, so that the force at the moment is transmitted to the whole bridge pier, the force can be effectively dissolved, and the impact force of a part of earthquakes can be dissolved.

The above-mentioned embodiments only express a certain implementation mode of the present invention, and the description thereof is specific and detailed, but not construed as limiting the scope of the present invention; it should be noted that, for those skilled in the art, without departing from the concept of the present invention, several variations and modifications can be made, which are within the protection scope of the present invention; therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. The utility model provides a nearly fault railway superelevation shock attenuation pier structure which characterized in that: including pier body (100), pier body (100) are divided into at the bottom of pier body (110) and the pier (120), and pier body (110) are located at the bottom of the pier (120), the horizontal cross section of pier body (110) is waist circular's structure, pier body (110) are including left pier stud (111), well pier stud (112) and right pier stud (113), left side pier stud (111), well pier stud (112) and right pier stud (113) are hollow structure.

2. The ultra-high shock-absorbing pier structure for the near-fault railway of claim 1, wherein: a plurality of groups of transverse system supports (130) are arranged in the middle pier column (112), and the transverse system supports (130) are uniformly distributed in the middle pier column (112) from top to bottom.

3. The ultra-high shock-absorbing pier structure for the near-fault railway of claim 1, wherein: the transverse system support (130) is of a cross structure, the transverse system support (130) comprises a middle fixer (131) and a connecting plate (132), one end of the connecting plate (132) is embedded into the pier body (110), and the other end of the connecting plate is rotatably connected with the middle fixer (131).

4. The ultra-high shock-absorbing pier structure for the near-fault railway of claim 1, wherein: the pier body (110) is divided into an upper part and a lower part, the vertical section of the upper part is rectangular, the vertical section of the lower part is trapezoidal, and the upper part and the lower part are in smooth transition.

5. The ultra-high shock-absorbing pier structure for the near-fault railway of claim 1, wherein: the front and the back of pier shaft (110) all are equipped with maintenance passageway (140), maintenance passageway (140) are along pier shaft (110) top-down, be equipped with in maintenance passageway (140) maintenance device (150) and connection bridge (160) that distribute along maintenance passageway (140), maintenance device (150) and connection bridge (160) are all fixed in maintenance passageway (140), maintenance device (150) are including cat ladder (151), protecting net (152) and fender post (153), cat ladder (151) and protecting post (153) all are located protecting net (152), maintenance device (150) symmetry is installed in maintenance passageway (140).

6. The ultra-high shock-absorbing pier structure for the near-fault railway of claim 3, wherein: be equipped with elastic connector (170) on middle fixer (131), connecting plate (132) are rotated with elastic connector (170) and are connected, elastic connector (170) include base (171), spring (172) and T type connecting seat (173), T type connecting seat (173) are fixed on base (171) through spring (172), base (171) are installed on middle connector, the one end of T template is fixed through the bolt on T type connecting seat (173).

7. The ultra-high shock-absorbing pier structure for the near-fault railway of claim 3, wherein: be equipped with in pier shaft (110) and observe metal pole (180), observe one end and connecting plate (132) fixed connection of metal pole (180), the other end passes pier shaft (110) and outwards stretches out.

8. The ultra-high shock-absorbing pier structure for the near-fault railway of claim 7, wherein: be equipped with steel reinforcement frame (191) in pier shaft (110), be equipped with E type structure (190) on connecting plate (132), E type structure (190) and steel reinforcement frame (191) contact, the upper end and the lower extreme of connecting plate (132) all are equipped with steel reinforcement frame (191).