Electric tower structure and construction method thereof
Technical Field
The invention relates to the technical field of electric power construction, in particular to an electric tower structure and a construction method thereof.
Background
The electric tower is a tower-shaped building with a trapezoid shape, a triangle shape and the like, the height is usually 25-40 meters, and the electric tower is of a steel frame structure. Most of them are built near power plants and power distribution stations in the field. It is an important facility in the power sector. The wire can be overhead and has the functions of protection and support. Design, manufacture, installation, maintenance and quality detection of the electric power iron tower are important guarantees for operation and development of modern electric power systems.
The invention discloses a high-voltage tower base with the publication number of CN104314354B, which comprises a base keel, wherein the upper part of the base keel is provided with a connecting part connected with a high-voltage tower, the lower part of the base keel is provided with a supporting table, and reinforcing piles are arranged below the supporting table. The high-voltage electric tower is connected with the base keel through the connecting portion, and the reinforcing pile can be used for reinforcing and fixing the base keel and the supporting table.
The above prior art solutions have the following drawbacks: above-mentioned patent is mainly to improve to reuse and fastness etc. of high-voltage electricity tower base, because electricity tower and base are rigid connection, when the electricity tower received the vertical and horizontal shock wave impact of earthquake jar harm, the electricity tower takes place to rock and leads to the bolt not hard up, further leads to the electricity tower to topple over.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide an electric tower structure which has the advantage of good earthquake resistance.
The above object of the present invention is achieved by the following technical solutions:
the utility model provides an electricity tower structure, includes electric tower body, installation foot and base, the middle part of base is provided with the recess, installation foot lower extreme horizontally connect has the mounting panel, the below level of mounting panel is provided with the shock attenuation board, be provided with a plurality of first bolts that run through shock attenuation board and mounting panel in proper order on the shock attenuation board, first bolt and shock attenuation board fixed connection, first bolt and mounting panel sliding connection, and the one end that just first bolt passed the mounting panel is equipped with first nut, be connected with the first spring under the compression state around being located first bolt between mounting panel and the shock attenuation board, all be equipped with the second spring under the natural state between four lateral walls of shock attenuation board and the inner wall of recess.
By adopting the technical scheme, when the electric tower body is impacted by the transverse seismic waves of an earthquake, the electric tower body and the damping plate rock together along the horizontal direction, and the second spring contracts or extends to play a damping and buffering role, so that the rocking amplitude of the damping plate and the electric tower body can be reduced; when the electricity tower body receives the vertical shock wave impact of earthquake, when electricity tower body and mounting panel vibrate downwards along vertical direction together, shock attenuation cushioning effect is played in the compression of first spring, and when electricity tower body and mounting panel upwards vibrate along vertical direction together, the downward pulling force is applyed to the mounting panel to the third spring extension, can reduce the vibration range of mounting panel and electricity tower body to improve the anti-seismic performance of electricity tower body.
The invention is further configured to: the second spring is internally provided with a guide rod fixedly connected with the inner wall of the groove along the axis direction of the second spring, and the side wall of the damping plate is provided with a guide groove in sliding fit with the guide rod.
Through adopting above-mentioned technical scheme, the guide bar plays the guide effect, can make the spring stretch out and draw back along the guide bar axis direction.
The invention is further configured to: and a plurality of third springs in a natural state are connected between the mounting plate and the damping plate.
Through adopting above-mentioned technical scheme, when electric tower body and mounting panel upwards shaken along vertical direction together, the third spring extension exerts decurrent pulling force to the mounting panel, can reduce the range of vibration of mounting panel and electric tower body, further improves the vertical anti-seismic performance of electric tower body.
The invention is further configured to: the damping plate is provided with a first damping pad around the first spring, and the length of the first spring in a fully compressed state is less than or equal to the height of the first damping pad.
Through adopting above-mentioned technical scheme, when vertical shock wave strikes great, before first spring was compressed completely, the mounting panel can extrude first shock pad, avoids first spring to exceed compression limit and is destroyed to protect first spring.
The invention is further configured to: and a second damping pad is arranged on the inner wall of the groove around the second spring, and the length of the second spring in a fully compressed state is less than or equal to that of the second damping pad.
Through adopting above-mentioned technical scheme, when horizontal shock wave impact is great, before the second spring was compressed completely, the shock attenuation board can extrude the second shock pad, avoids the second spring to exceed compression limit and is destroyed to the protection second spring.
The invention is further configured to: the first shock pad and the second shock pad are in a round table shape, the end with the larger cross-sectional area of the first shock pad faces the shock absorption plate, and the end with the larger vertical cross-sectional area of the second shock pad faces the inner wall of the groove.
Through adopting above-mentioned technical scheme, the first shock pad and the second shock pad of round platform form can give the shock attenuation board or recess inner wall with the pressure dispersion that it received when receiving great pressure.
The invention is further configured to: a protective film covering the groove opening is arranged between the mounting plate and the upper surface of the base, and the protective film is made of flexible materials.
Through adopting above-mentioned technical scheme, the structure that the protecting film can protect the recess inside is avoided blowing by wind and is shone by the sun and drench, and extension antidetonation life improves antidetonation stability.
The second purpose of the invention is to provide a construction method of an electric tower structure, which has the advantage of good earthquake resistance.
The second purpose of the invention is realized by the following technical scheme:
a construction method of an electric tower structure comprises the following steps:
pouring a base: excavating a foundation pit in a set area, placing the bound reinforcement cage after installing a template, embedding a second spring in a set position, pouring concrete into the template, and forming a base after maintenance is finished;
installing a damping plate: installing a first bolt on the damping plate, placing the damping plate at the bottom of the groove of the foundation pit, and fixedly connecting one end of a second spring with the side wall of the damping plate;
mounting the mounting plate: installing a first spring around the first bolt, placing the mounting plate above the damping plate, and fixedly connecting two ends of the first spring with the mounting plate and the damping plate respectively to enable the first bolt to penetrate through the mounting plate and tighten a first nut on the first bolt;
installation of the electric tower: and hoisting the preassembled electric tower body to the upper part of the mounting plate to fixedly connect the mounting feet with the mounting plate, thereby completing construction.
By adopting the technical scheme, when the electric tower body is impacted by the transverse seismic waves of an earthquake, the electric tower body and the damping plate rock together along the horizontal direction, and the second spring contracts or extends to play a damping and buffering role, so that the rocking amplitude of the damping plate and the electric tower body can be reduced; when the electricity tower body receives the vertical shock wave impact of earthquake, when electricity tower body and mounting panel vibrate downwards along vertical direction together, shock attenuation cushioning effect is played in the compression of first spring, and when electricity tower body and mounting panel upwards vibrate along vertical direction together, the downward pulling force is applyed to the mounting panel to the third spring extension, can reduce the vibration range of mounting panel and electricity tower body to improve the anti-seismic performance of electricity tower body.
In conclusion, the beneficial technical effects of the invention are as follows:
(1) when the electric tower body is impacted by the transverse seismic waves of an earthquake, the electric tower body and the damping plate rock together along the horizontal direction, and at the moment, the second spring contracts or extends to play a damping and buffering role and reduce the rocking amplitude of the damping plate and the electric tower body; when the electric tower body is impacted by longitudinal seismic waves of an earthquake, the electric tower body and the mounting plate vibrate downwards along the vertical direction together, the first spring is compressed to play a role in damping and buffering, and when the electric tower body and the mounting plate vibrate upwards along the vertical direction together, the third spring extends to apply downward tension to the mounting plate, so that the vibration amplitude of the mounting plate and the electric tower body can be reduced, and the anti-seismic performance of the electric tower body is improved;
(2) through setting up the third spring, when electricity tower body and mounting panel upwards vibrate along vertical direction together, the third spring
The downward tensile force is applied, so that the vibration amplitude of the mounting plate and the electric tower body can be reduced, and the longitudinal anti-seismic performance of the electric tower body is further improved;
(3) by arranging the first shock absorption pad and the second shock absorption pad, when the longitudinal shock wave impact is large, the mounting plate can extrude the first shock absorption pad before the first spring is completely compressed, so that the first spring is prevented from being damaged beyond the compression limit, and the first spring is protected; when the transverse shock wave impact is large, the damping plate can extrude the second damping pad before the second spring is completely compressed, and the second spring is prevented from being damaged beyond the compression limit, so that the second spring is protected.
Drawings
FIG. 1 is a schematic diagram of an electric tower structure;
FIG. 2 is a top view of an electric tower structure;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;
FIG. 4 is an enlarged view of portion C of FIG. 3;
FIG. 5 is a cross-sectional view taken along line B-B of FIG. 2;
fig. 6 is an enlarged view of a portion D in fig. 5.
Reference numerals: 1. an electric tower body; 2. mounting a foot; 3. a base; 4. a groove; 5. mounting a plate; 6. a damper plate; 7. a first bolt; 8. a first nut; 9. a first spring; 10. a second spring; 11. a guide bar; 12. a guide groove; 13. a third spring; 14. a first cushion pad; 15. a second cushion pad; 16. and (4) a protective film.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The first embodiment is as follows: referring to fig. 1, the electric tower structure sequentially comprises an electric tower body 1, mounting legs 2 and a base 3 from top to bottom, wherein the base 3 is formed by pouring concrete. Referring to fig. 2 and 3, a groove 4 with a square cross section is formed in the middle of the base 3, a square mounting plate 5 is horizontally connected to the lower end of the mounting foot 2, and the mounting foot 2 is connected with the mounting plate 5 through a high-strength bolt and a nut.
Referring to fig. 3 and 4, a square damping plate 6 slidably connected to the bottom wall of the groove 4 is horizontally disposed below the mounting plate 5, the lower surface of the damping plate 6 is attached to the bottom wall of the groove 4, a plurality of first bolts 7 sequentially penetrating through the damping plate 6 and the mounting plate 5 are disposed on the damping plate 6, in this embodiment, three first bolts 7 are disposed on each side of the damping plate 6, the first bolts 7 are fixedly connected to the damping plate 6, the first bolts 7 and the damping plate 6 can be connected by welding or screwing, the first bolts 7 are slidably connected to the mounting plate 5, one end of each first bolt 7 penetrating through the mounting plate 5 is screwed with a first nut 8, the first nut 8 is a locknut, a first spring 9 under compression is connected around the first bolt 7 between the mounting plate 5 and the damping plate 6, two ends of the first spring 9 are respectively fixedly connected to the mounting plate 5 and the damping plate 6, second springs 10 in a natural state are arranged between the four side walls of the damping plate 6 and the inner wall of the groove 4, in this embodiment, two second springs 10 are arranged on each side of the damping plate 6, and the positions of the second springs 10 and the first springs 9 are staggered.
When the electric tower body 1 is impacted by the transverse seismic waves of an earthquake, the second spring 10 contracts or extends to play a role in damping and buffering, so that the shaking amplitude of the damping plate 6 and the electric tower body 1 can be reduced; when electricity tower body 1 receives the vertical shock wave impact of earthquake, when electricity tower body 1 and mounting panel 5 are shaken along vertical direction downwards together, first spring 9 is compressed and is played the shock attenuation cushioning effect, and when electricity tower body 1 and mounting panel 5 upwards shake along vertical direction together, the extension of third spring 13 applys decurrent pulling force to mounting panel 5, can reduce the vibrations range of mounting panel 5 and electricity tower body 1 to improve the anti-seismic performance of electricity tower body 1.
Still be connected with a plurality of third springs 13 under natural state between mounting panel 5 and the shock attenuation board 6, the both ends of third spring 13 respectively with mounting panel 5, shock attenuation board 6 fixed connection. When electricity tower body 1 and mounting panel 5 upwards shake along vertical direction together, third spring 13 extension exerts decurrent pulling force to mounting panel 5, can reduce the range of vibrations of mounting panel 5 and electricity tower body 1, further improves the vertical anti-seismic performance of electricity tower body 1.
In order to protect the first spring 9, an annular first shock pad 14 is fixedly connected to the shock absorbing plate 6 around the first spring 9, the first shock pad 14 is made of rubber materials, the first shock pad 14 and the shock absorbing plate 6 can be fixed in a bonding mode, and the length of the first spring 9 in a fully compressed state is smaller than or equal to the height of the first shock pad 14. When the longitudinal shock wave impact is large, the mounting plate 5 will press the first cushion 14 before the first spring 9 is fully compressed, avoiding the first spring 9 to be damaged beyond the compression limit. The first shock pad 14 is in a circular truncated cone shape, the end with the large cross-sectional area of the first shock pad 14 faces the shock absorption plate 6, and the pressure applied to the circular truncated cone-shaped first shock pad 14 can be dispersed to the shock absorption plate 6 when the circular truncated cone-shaped first shock pad is under large pressure.
Fixedly connected with covers the protective film 16 of recess 4 open-ended between mounting panel 5 and the base 3 upper surface, and protective film 16 adopts flexible material to make, and protective film 16's vertical cross-section is the wave. The height of the upper surface of the mounting plate 5 is slightly larger than that of the upper surface of the base 3, therefore, the protective film 16 is arranged in an inclined mode, rainwater is conveniently drained, and the protective film 16 can be made of rubber or plastic materials with good weather resistance and elasticity. The protective film 16 can protect the structure inside the groove 4 from being blown by wind, sunburn and rain, prolong the anti-seismic life and improve the anti-seismic stability.
Referring to fig. 5 and 6, a guide rod 11 is arranged inside the second spring 10 along the axial direction thereof, one end of the guide rod 11 is fixedly connected with the inner wall of the groove 4, and a guide groove 12 in sliding fit with the guide rod 11 is arranged on the side wall of the damper plate 6. The guide rod 11 plays a guiding role, and the spring can be made to extend and contract along the axial direction of the guide rod 11.
In order to protect the second spring 10, an annular second shock pad 15 is fixedly connected to the inner wall of the groove 4 around the second spring 10, the second shock pad 15 is made of rubber materials, the second shock pad 15 and the inner wall of the groove 4 can be fixed in a bonding mode, and the length of the second spring 10 in a fully compressed state is less than or equal to that of the second shock pad 15. When the lateral shock wave impact is large, the damping plate 6 will press the second damping pad 15 before the second spring 10 is fully compressed, avoiding the second spring 10 to be damaged beyond the compression limit. The second shock pad 15 is in a circular truncated cone shape, and one end of the second shock pad 15 with a larger vertical sectional area faces the inner wall of the groove 4. When receiving a large pressure, the circular truncated cone-shaped second cushion 15 can distribute the pressure received by the circular truncated cone-shaped second cushion to the inner wall of the groove 4.
The implementation principle of the first embodiment is as follows: when the electric tower body 1 is impacted by the transverse seismic waves of an earthquake, the electric tower body 1 and the damping plate 6 rock together along the horizontal direction, at the moment, the second spring 10 contracts or extends along the axis direction of the guide rod 11 to play a damping and buffering role, the rocking amplitude of the damping plate 6 and the electric tower body 1 can be reduced, and the second damping pad 15 can prevent the second spring 10 from exceeding the compression limit and being damaged;
when electricity tower body 1 receives the vertical shock wave impact of earthquake, when electricity tower body 1 and mounting panel 5 are shaken downwards along vertical direction together, first spring 9 and third spring 13 are compressed and are played the shock attenuation cushioning effect, first shock pad 14 can avoid first spring 9 to exceed the compression limit and is destroyed, when electricity tower body 1 and mounting panel 5 upwards shake along vertical direction together, third spring 13 extension applys decurrent pulling force to mounting panel 5, can reduce the vibration range of mounting panel 5 and electricity tower body 1, thereby improve the anti-seismic performance of electricity tower body 1.
Example two: a construction method of an electric tower structure comprises the following steps:
pouring a base 3: excavating a foundation pit in a set area, placing the bound reinforcement cage after installing a template, embedding a second spring 10 in a set position, pouring concrete into the template, and forming a base 3 after maintenance is finished;
installation of the damper plate 6: installing a first bolt 7 on the damping plate 6, placing the damping plate 6 at the bottom of the groove 4 of the foundation pit, and fixedly connecting one end of a second spring 10 with the side wall of the damping plate 6;
mounting of the mounting plate 5: installing a first spring 9 around the first bolt 7, placing the mounting plate 5 above the damping plate 6, fixedly connecting two ends of the first spring 9 with the mounting plate 5 and the damping plate 6 respectively, enabling the first bolt 7 to penetrate through the mounting plate 5, and screwing a first nut 8 on the first bolt 7;
installation of the electric tower: and (3) hoisting the preassembled electric tower body 1 to the upper part of the mounting plate 5, and fixedly connecting the mounting feet 2 with the mounting plate 5 to finish construction.
Example three: a construction method of an electric tower structure comprises the following steps:
pouring a base 3: excavating a foundation pit in a set area, placing a bound reinforcement cage after installing a template, embedding a second spring 10, a guide rod 11 and a second shock pad 15 in a set position, pouring concrete into the template, and forming a base 3 after maintenance is finished;
installation of the damper plate 6: installing a first bolt 7 and a third spring 13 on the damping plate 6, placing the damping plate 6 at the bottom of the groove 4 of the foundation pit, fixedly connecting one end of a second spring 10 with the side wall of the damping plate 6, and extending a guide rod 11 into a guide groove 12 of the damping plate 6;
mounting of the mounting plate 5: installing a first spring 9 around the first bolt 7, placing the mounting plate 5 above the damping plate 6, fixedly connecting two ends of the first spring 9 with the mounting plate 5 and the damping plate 6 respectively, and fixedly connecting two ends of a third spring 13 with the mounting plate 5 and the damping plate 6 respectively, so that the first bolt 7 penetrates through the mounting plate 5, and screwing a first nut 8 on the first bolt 7;
installation of the electric tower: and (3) hoisting the preassembled electric tower body 1 to the upper part of the mounting plate 5, and fixedly connecting the mounting feet 2 with the mounting plate 5 to finish construction.
The implementation principles of the second and third embodiments are the same as those of the first embodiment, and are not described herein again.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.