阅读说明：本技术 一种具有耐高温防护结构的拉索及其组装方法 (Inhaul cable with high-temperature-resistant protection structure and assembling method thereof ) 是由 但路昭 马健 汤亮 田明 白洪涛 吴斌 刘斌 王建洪 黄永福 唐红波 代攀 蒋 于 2021-06-30 设计创作，主要内容包括：一种具有耐高温防护结构的拉索及其组装方法,所述具有耐高温防护结构的拉索其包括索体,缠包带,金属管,以及密封件。所述缠包带由防火材料制成并沿所述索体的中心周向分段缠绕设置在所述索体上。所述金属管包括半圆形不锈钢管,隔板,以及销管。将所述隔板和销管焊接在所述半圆形不锈钢管上,再将两个所述半圆形不锈钢管包设在所述索体上,并通过两侧的所述销管固定,使所述金属管的组装和拆卸变得更加容易,提高施工效率,并增加施工便利性。所述隔板将所述半圆形不锈钢管与所述缠包带之间的间隙的分隔成多个独立且相互不连通的空间,隔绝气体的流动避免所述金属管内部的热空气上升,从而降低火灾蔓延的速度,进一步提高耐高温性。(The inhaul cable with the high-temperature-resistant protective structure comprises a cable body, a wrapping belt, a metal pipe and a sealing piece. The wrapping belt is made of fireproof materials and is arranged on the cable body in a segmented winding mode along the central circumferential direction of the cable body. The metal pipe comprises a semicircular stainless steel pipe, a partition plate and a pin pipe. The partition plate and the pin pipes are welded on the semicircular stainless steel pipes, the two semicircular stainless steel pipes are wrapped on the cable body and fixed through the pin pipes on the two sides, so that the metal pipes are easier to assemble and disassemble, the construction efficiency is improved, and the construction convenience is improved. The partition plates divide the gap between the semicircular stainless steel pipe and the wrapping belt into a plurality of independent and mutually disconnected spaces, and the flowing of gas is isolated to avoid the rising of hot air in the metal pipe, so that the fire spreading speed is reduced, and the high temperature resistance is further improved.)

1. The utility model provides a cable with high temperature resistant protective structure which characterized in that: the inhaul cable with the high-temperature-resistant protection structure comprises a cable body, a wrapping belt and a metal pipe, wherein the wrapping belt is wound outside the cable body, the metal pipe is arranged outside the wrapping belt, the wrapping belt is made of fireproof materials and is positioned between the cable body and the metal pipe, the wrapping belt is wound along the central circumference of the cable body in a segmented mode and is arranged on the outer side wall of the cable body, the winding directions of the wrapping belt of each segment are parallel to each other, the number of winding layers is at least one, the metal pipe comprises two semicircular stainless steel pipes arranged outside the wrapping belt and a plurality of partition plates arranged on the inner wall of the semicircular stainless steel pipes at intervals, the two semicircular stainless steel pipes are buckled on the wrapping belt outside the cable body in a two-half structure, the partition plates are positioned between the wrapping belt and the semicircular stainless steel pipes, and one ends of the plurality of partition plates are respectively arranged on the inner walls of the two semicircular stainless steel pipes, the other end of the semi-circular stainless steel pipe is abutted against the wrapping belt after being buckled, the butt joint seams of the two clapboards and the butt joint seams of the two semi-circular stainless steel pipes are on the same plane and are mutually perpendicular, and the clapboards divide the gap between the buckled two semi-circular stainless steel pipes and the wrapping belt into a plurality of independent and mutually non-communicated spaces.

2. The guy cable with a high temperature resistant protective structure according to claim 1, characterized in that: the inhaul cable with the high-temperature-resistant protection structure further comprises a sealing piece arranged at the end part of the metal pipe, and the sealing piece is positioned between the semicircular stainless steel pipe and the cable body.

3. The guy cable with a high temperature resistant protective structure according to claim 1, characterized in that: the wrapping belt is made of a fireproof material with a heat conductivity coefficient of less than 1W/m ℃.

4. The guy cable with a high temperature resistant protective structure according to claim 1, characterized in that: the two semicircular stainless steel pipes are in a hollow cylindrical shape when buckled together.

5. The guy cable with a high temperature resistant protective structure according to claim 1, characterized in that: the central angle of the semicircular stainless steel pipe is 180 degrees.

6. The guy cable with a high temperature resistant protective structure according to claim 1, characterized in that: the metal pipe also comprises a plurality of pin pipes which are respectively arranged at two sides of the two semicircular stainless steel pipes at intervals.

7. The guy cable with a high temperature resistant protective structure according to claim 6, characterized in that: the central shafts of the pin pipes arranged on the same side of the semicircular stainless steel pipe are on the same straight line.

8. An assembling method of a guy cable with a high-temperature resistant protection structure comprises the following steps:

step S1: providing a wrapping belt and a cable body, and winding the wrapping belt on the outer side wall of the cable body in a segmented manner along the circumferential direction of the center of the cable body;

step S2: providing a metal pipe, wherein the metal pipe comprises two semicircular stainless steel pipes arranged outside the wrapping belt, a plurality of partition plates arranged on the inner walls of the semicircular stainless steel pipes at intervals, and a plurality of pin pipes arranged on the semicircular stainless steel pipes at intervals, and the semicircular stainless steel pipes are formed by cutting one stainless steel pipe in half along the axial direction of the semicircular stainless steel pipe;

step S3: the partition plate and the pin pipe are respectively and fixedly arranged on the inner side walls and the two side edges of the two semicircular stainless steel pipes;

step S4: inserting a fastener into the pin pipe to fix the side edge of the same side of the two semicircular stainless steel pipes, and then wrapping the two semicircular stainless steel pipes on the cable body;

step S5: providing at least two shaping clamps, wherein each shaping clamp comprises two semicircular arcs, and the free end of each semicircular arc is provided with two splicing parts which respectively extend along the diameter direction of the semicircular arc and towards the opposite direction of the circle center;

step S6: after the metal pipe is clamped and fixed by the shaping clamp, fixing the pin pipe on the other side from bottom to top so as to fix the metal pipe on the cable body;

step S7: providing a seal, and mounting the seal at one end of the metal tube.

9. The assembling method of the guy cable with the high temperature resistant protective structure according to claim 8, characterized in that: in the above step S3, the interval between each adjacent partition boards is between 400 mm and 800 mm.

10. The assembling method of the guy cable with the high temperature resistant protective structure according to claim 8, characterized in that: in the above step S3, the interval between each adjacent pin tubes is between 400 mm and 800 mm.

Technical Field

The invention relates to the technical field of stay cables of building structures, in particular to a stay cable with a high-temperature-resistant protection structure and an assembling method thereof.

Background

The stay cable is a main stressed part of building structures such as bridges and the like and bears the gravity of the building structures, and the stay cable body mainly comprises a high-strength steel wire and a winding belt wound on the outer side of the high-strength steel wire. In the prior art, the wrapping belt is generally made of high-density polyethylene, the wrapping belt made of the high-density polyethylene has good aging resistance as an anti-corrosion sealing layer of the inhaul cable body, but the high-density polyethylene is a combustible substance, and can be ignited under the condition of fire and accelerate the spread of the fire, and meanwhile, the temperature rise of the inner steel wire is accelerated. In addition, the poor fire resistance is a fatal weakness of the steel wire, the temperature of a common fire scene is 800-1000 ℃, the strength of the steel wire is seriously reduced when the temperature of the steel wire is increased to 400 ℃, the strength and the rigidity are basically lost when the temperature of the steel wire is increased to 600 ℃, and meanwhile, the elastic modulus of the steel wire is changed along with the temperature, so that the bearing capacity of the inhaul cable is greatly reduced, the structural stability is greatly influenced, and the safe use of the inhaul cable is threatened.

Disclosure of Invention

In view of the above, the present invention provides a cable with a high temperature resistant protection structure and an assembling method thereof, so as to solve the above technical problems.

A guy cable with a high-temperature resistant protection structure comprises a cable body, a wrapping belt wound outside the cable body and a metal pipe arranged outside the wrapping belt. The wrapping band is made of a fireproof material and is located between the cable body and the metal pipe. The winding belt is wound along the central circumference of the cable body in a segmented manner and is arranged on the outer side wall of the cable body, the winding directions of the winding belt at each segment are parallel to each other, and the number of winding layers is at least one. The metal pipe comprises two semicircular stainless steel pipes arranged outside the wrapping band and a plurality of partition plates arranged on the inner walls of the semicircular stainless steel pipes at intervals. The two semicircular stainless steel pipes are buckled on the wrapping belt outside the rope body in a two-half structure. The partition plates are positioned between the wrapping belt and the semicircular stainless steel tubes, one ends of the partition plates are respectively arranged on the inner walls of the two semicircular stainless steel tubes, and the other ends of the partition plates are abutted against the wrapping belt after the two semicircular stainless steel tubes are buckled. The butt joints of the two clapboards and the butt joints of the two semicircular stainless steel pipes are on the same plane and are perpendicular to each other, and the clapboards divide the gap between the two buckled semicircular stainless steel pipes and the wrapping belt into a plurality of independent spaces which are not communicated with each other.

Further, the inhaul cable with the high-temperature resistant protection structure further comprises a sealing element arranged at the end part of the metal pipe, and the sealing element is positioned between the semicircular stainless steel pipe and the inhaul cable body.

Further, the wrapping tape is made of a fireproof material with a heat conductivity coefficient of less than 1W/m ℃.

Furthermore, the two semicircular stainless steel pipes are in a hollow cylindrical shape when buckled together.

Further, the central angle of the semicircular stainless steel pipe is 180 degrees.

Furthermore, the metal pipe also comprises a plurality of pin pipes which are respectively arranged at two sides of the two semicircular stainless steel pipes at intervals.

Further, the central axes of the pin pipes arranged on the same side of the semicircular stainless steel pipe are on the same straight line.

An assembling method of a guy cable with a high-temperature resistant structure comprises the following steps:

step S1: providing a wrapping belt and a cable body, and winding the wrapping belt on the outer side wall of the cable body in a segmented manner along the circumferential direction of the center of the cable body;

step S2: providing a metal pipe, wherein the metal pipe comprises two semicircular stainless steel pipes arranged outside the wrapping belt, a plurality of partition plates arranged on the inner walls of the semicircular stainless steel pipes at intervals, and a plurality of pin pipes arranged on the semicircular stainless steel pipes at intervals, and the semicircular stainless steel pipes are formed by cutting one stainless steel pipe in half along the axial direction of the semicircular stainless steel pipe;

step S3: the partition plate and the pin pipe are respectively and fixedly arranged on the inner side walls and the two side edges of the two semicircular stainless steel pipes;

step S4: inserting a fastener into the pin pipe to fix the side edge of the same side of the two semicircular stainless steel pipes, and then wrapping the two semicircular stainless steel pipes on the cable body;

step S5: providing at least two shaping clamps, wherein each shaping clamp comprises two semicircular arcs, and the free end of each semicircular arc is provided with two splicing parts which respectively extend along the diameter direction of the semicircular arc and towards the opposite direction of the circle center;

step S6: after the metal pipe is clamped and fixed by the shaping clamp, fixing the pin pipe on the other side from bottom to top so as to fix the metal pipe on the cable body;

step S7: providing a seal, and mounting the seal at one end of the metal tube.

Further, in the step S3, the interval between each adjacent partition boards is between 400 mm and 800 mm.

Further, in the step S3, the interval between each adjacent pin tubes is between 400 mm and 800 mm.

Compared with the prior art, the stay cable with the high-temperature-resistant protection structure provided by the invention is characterized in that the wrapping belt is wound on the cable body and is made of a fireproof material with a heat conductivity coefficient of less than 1W/m ℃, so that the high-temperature resistance of the cable body is improved, and the metal pipe is wrapped outside the wrapping belt. The metal pipe comprises two semicircular stainless steel pipes arranged outside the wrapping belt, a plurality of partition plates arranged on the inner walls of the semicircular stainless steel pipes at intervals, and a plurality of pin pipes arranged on the semicircular stainless steel pipes at intervals. And the partition plate and the pin pipe are fixedly arranged on the inner side wall and the two side edges of the two semicircular stainless steel pipes respectively. The side edge of the same side of the two semicircular stainless steel pipes is fixed through the pin pipe, then the two semicircular stainless steel pipes are arranged on the cable body in a wrapping mode, the pin pipe on the other side is fixed from bottom to top, therefore, the connection of the two semicircular stainless steel pipes is achieved, meanwhile, the metal pipe is arranged on the cable body in a sleeving mode, the metal pipe is easier to assemble and disassemble, the construction efficiency is improved, the construction convenience is improved, the metal pipe is simple in structure, can be repeatedly used, and is convenient to produce. After the semicircular stainless steel pipes are buckled, the gaps between the semicircular stainless steel pipes and the wrapping belts are divided into a plurality of independent and mutually non-communicated spaces by the partition boards, and the flowing of gas is isolated to avoid the rising of hot air in the metal pipes under the condition of fire, so that the spreading speed of the fire is reduced, and the high temperature resistance is further improved.

Drawings

Fig. 1 is a schematic structural view of a guy cable with a high temperature resistant protective structure provided by the invention.

Fig. 2 is a schematic axial sectional structure view of the cable with the high temperature resistant protection structure in fig. 1.

Fig. 3 is a schematic cross-sectional structure view of the cable with the high temperature resistant protection structure in fig. 1.

Fig. 4 is a schematic structural view of step S3 of the method for assembling the cable with the high temperature resistant protective structure of fig. 1.

Fig. 5 is a schematic structural view of step S4 of the method for assembling the cable with the high temperature resistant protective structure of fig. 1.

Fig. 6 is a schematic structural view of step S6 of the method for assembling the cable with the high temperature resistant protective structure of fig. 1.

Detailed Description

Specific examples of the present invention will be described in further detail below. It should be understood that the description herein of embodiments of the invention is not intended to limit the scope of the invention.

As shown in fig. 1 to fig. 3, which are schematic structural views of the cable with the high temperature resistant protection structure provided by the invention. The stay cable with the high temperature resistant protective structure comprises a cable body 10, a wrapping tape 20 wound outside the cable body 10, a metal pipe 30 arranged outside the wrapping tape 20, and a sealing member 40 arranged on the metal pipe 30. It is contemplated that the cable with the high temperature resistant protection structure may further include other functional modules, such as an anchor, a fixing component, a mounting component, and the like, which are well known to those skilled in the art and will not be described herein.

The cable body 10 is a stressed member of a building structure such as a bridge, is disposed between a cable tower and a bridge deck of a cable-stayed bridge, and is configured to bear and support the weight of the bridge deck, and transfer the weight to the cable tower to enable a bridge column to bear pressure. As is well known, the cable body 10 is formed by arranging a plurality of steel wires along the length direction thereof to receive the tension of the bridge, and thus the plurality of steel wires need to be wound and fixed by the winding band 20.

The wrapping band 20 is wrapped along the central circumference of the cable body 10 in a segmented manner and is arranged on the outer side wall of the cable body 10. The wrapping band 20 is located between the cable body 10 and the metal tube 30. The winding directions of the winding belt 20 of each section are parallel to each other, and the number of winding layers is at least one, so that the winding and the dismounting are easier, the whole winding belt 20 does not need to be replaced, and the stress of the winding belt 20 is more even to bear the tensile force of the cable body 10. The wrapping tape 20 is made of a fireproof material with a thermal conductivity coefficient of less than 1W/m ℃, so that the high temperature resistance of the cable body 10 is improved.

The metal pipe 30 includes two semicircular stainless steel pipes 31 disposed outside the wrapping band 20, a plurality of partition plates 32 disposed at intervals on an inner wall of the semicircular stainless steel pipes 31, and a plurality of pin pipes 33 disposed at intervals on the semicircular stainless steel pipes 31.

The semicircular stainless steel pipes 31 are of a hollow cylindrical structure with a semi-annular cross section and are made of stainless steel materials, the two semicircular stainless steel pipes 31 are wrapped on the wrapping belt 20, namely, the wrapping belt 20 is located between the semicircular stainless steel pipes 31 and the cable body 10, and the cable body 10 penetrates through the hollow part of the semicircular stainless steel pipes 31. The semicircular stainless steel pipe 31 is of a two-half structure, that is, one steel pipe can be half-cut into two semicircular structures along the axial direction thereof by using technologies such as laser cutting and the like. The central angle of each semicircular stainless steel tube 31 is 180 degrees, and the diameter of the two semicircular stainless steel tubes 31 after being buckled is larger than that of the cable body 10, so that the two semicircular stainless steel tubes 31 can be buckled and coated on the outer side wall of the cable body 10.

The partition plate 32 is in a semicircular annular structure and is located between the wrapping belt 20 and the semicircular stainless steel tube 31. The partition plates 32 are respectively arranged on the inner wall of the semicircular stainless steel pipe 31 at intervals and the distance between each adjacent partition plate 34 may be equal or unequal. The two partitions 32 respectively disposed on the inner wall of the semicircular stainless steel pipe 31 correspond in position such that the two partitions 32 form a circular ring shape. The outer circle edge of the partition plate 32 is fixedly arranged on the inner wall of the semicircular stainless steel tube 31, so that the two partition plates 32 are buckled together after the two semicircular stainless steel tubes 31 are buckled. The butt seam of the two partition plates 32 and the butt seam of the two semicircular stainless steel pipes 31 are in the same plane and are perpendicular to each other. The two partition plates 32 are in a circular ring structure after being buckled, the inner circular edges of the two partition plates 32 abut against the wrapping belt 20, and a certain gap is formed between the semicircular stainless steel pipe 31 and the wrapping belt 20, so that the semicircular stainless steel pipe 31 is prevented from contacting with the cable body 10 and the wrapping belt 20, and the cable body 10 can be better protected. The partition plates 32 divide the gap between the semicircular stainless steel pipe 31 and the wrapping band 20 into a plurality of independent and non-communicated spaces, thereby isolating the flow of gas, preventing the hot air in the metal pipe 30 from rising under the condition of fire, and achieving the effect of reducing the spreading speed of the fire.

The pin pipes 33 are respectively arranged on two butt edges of the two semicircular stainless steel pipes 31 at intervals, and the pin pipes 33 on the two semicircular stainless steel pipes 31 are arranged adjacently in a staggered manner. The distance between each adjacent pin tubes 33 is equal, and the central axes of the pin tubes 33 arranged on the same butt joint edge can be arranged on a straight line, thereby facilitating the insertion of fasteners. The pin pipe 33 is used for connecting and fixing the two semicircular stainless steel pipes 31, and it is conceivable that the pin pipe 33 needs to be connected by inserting a fastener such as a pin, and the pin is the prior art, so the structure thereof is not described in detail. The pin is inserted into the pin pipe 33, specifically, after the two semicircular stainless steel pipes 31 are fastened to the outer side wall of the cable 10, the pin is inserted into the pin pipe 33, so that the two semicircular stainless steel pipes 31 are connected together, and the metal pipe 30 is wrapped and fixed on the outer side wall of the cable 10. The method of fixing the two semicircular stainless steel pipes 31 may use any method of the prior art, such as welding, pinning, etc. In this embodiment, two semicircular stainless steel pipes 31 are connected together by a pin connection method.

The sealing member 40 is disposed on the end of the metal pipe 30 between the metal pipe 30 and the cable 10. The sealing member 40 is used for sealing a gap between the metal pipe 30 and the cable body 10, and preventing rainwater or other foreign matters from entering to affect the cable body 10 and the wrapping tape 20 in the metal pipe 30, which is the prior art and will not be described herein again.

When the two semicircular stainless steel pipes 31 are wrapped around the cable body 10, the two semicircular stainless steel pipes 31 need to be connected. And in order to facilitate the pinning of the two semicircular stainless steel pipes 31, at least one sizing jig 50 must be used. The sizing jig 50 includes two semicircular arcs, and the free end of each semicircular arc has two splicing portions extending along the diameter direction thereof and in the opposite direction to the center of the circle. When the two semicircular arcs are butted together, the splicing parts are locked by fasteners such as screws and the like, so that the two semicircular stainless steel pipes 31 can be fixed. Specifically, the shaping jig 50 is sleeved on the outer side wall of the semicircular stainless steel tube 31, and the shaping jig 50 is locked by the locking portions at the two ends of the shaping jig 50, so that the two semicircular stainless steel tubes 31 are clamped and fixed, the abutting edges of the two semicircular stainless steel tubes 31 are mutually attached, the positions of the pin tubes 33 are corresponding, and the pins are conveniently inserted into the pin tubes 33. The shaping jig 50 is used for clamping and positioning the two semicircular stainless steel pipes 31. The number of the sizing jigs 50 may be set according to the length of the semicircular stainless steel pipe 31, such as two, three, etc.

The invention also provides an assembling method of the inhaul cable with the high-temperature-resistant protection structure, which comprises the following steps:

step S1: providing a wrapping belt 20 and a cable body 10, and winding the wrapping belt 20 on the outer side wall of the cable body 10 in a segmented manner along the central circumference of the cable body 10;

step S2: providing a metal pipe 30, wherein the metal pipe 30 comprises two semicircular stainless steel pipes 31 arranged outside the wrapping belt 20, a plurality of partition plates 32 arranged on the inner walls of the semicircular stainless steel pipes 31 at intervals, and a plurality of pin pipes 33 arranged on the semicircular stainless steel pipes 31 at intervals, and the semicircular stainless steel pipes are formed by cutting a stainless steel pipe in half along the axial direction of the semicircular stainless steel pipes;

step S3: the partition plates 32 and the pin pipes 33 are respectively and fixedly arranged on the inner side wall and two side edges of the two semicircular stainless steel pipes 31, specifically, the interval between each two adjacent partition plates 32 is 400 mm to 800 mm, and the interval between each two adjacent pin pipes 33 is 400 mm to 800 mm;

step S4: fixing the side edges of the two semicircular stainless steel pipes 31 at the same side by inserting fasteners into the pin pipes 33, and then wrapping the two semicircular stainless steel pipes 31 on the cable body 10;

step S5: providing at least two sizing clamps 50, wherein each sizing clamp 50 comprises two semicircular arcs, and the free end of each semicircular arc is provided with two splicing parts which respectively extend along the diameter direction of the semicircular arc and towards the opposite direction of the circle center;

step S6: after being clamped and fixed by the shaping clamp 50, the pin pipe 33 on the other side is fixed from bottom to top, so that the metal pipe 30 is fixed on the cable body 10;

step S7: a sealing member 40 is provided, and the sealing member 40 is installed at one end of the metal pipe 30.

Compared with the prior art, the stay cable with the high-temperature resistant protection structure provided by the invention has the advantages that the wrapping belt 20 is wound on the cable body 10, the wrapping belt 20 is made of a fireproof material with the heat conductivity coefficient of less than 1W/m ℃, so that the high-temperature resistance of the cable body 10 is improved, and the metal pipe 30 is arranged outside the wrapping belt 20. The metal pipe 30 includes two semicircular stainless steel pipes 31 disposed outside the wrapping band 20, a plurality of partition plates 32 disposed at intervals on an inner wall of the semicircular stainless steel pipes 31, and a plurality of pin pipes 33 disposed at intervals on the semicircular stainless steel pipes 31. The partition plate 32 and the pin pipe 33 are respectively and fixedly arranged on the inner side wall and two side edges of the two semicircular stainless steel pipes 31. Firstly fixing the side edges of the same side of the two semicircular stainless steel pipes 31 through the pin pipes 33, then wrapping the two semicircular stainless steel pipes 31 on the cable body 10, fixing the pin pipes 33 of the other side from bottom to top, thereby realizing the connection of the two semicircular stainless steel pipes 31, and simultaneously sleeving the metal pipe 30 on the cable body 10, further facilitating the assembly and disassembly of the metal pipe 30, improving the construction efficiency and increasing the construction convenience, wherein the metal pipe 30 has a simple structure, can be repeatedly used and is convenient to produce. After the semicircular stainless steel pipe 31 is fastened, the partition plate 32 divides the gap between the semicircular stainless steel pipe 31 and the wrapping belt 20 into a plurality of independent and mutually disconnected spaces, and the flowing of gas is isolated to avoid the rising of hot air in the metal pipe 30 under the condition of fire, so that the spreading speed of the fire is reduced, and the high temperature resistance is further improved.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the present invention, and any modifications, equivalents or improvements that are within the spirit of the present invention are intended to be covered by the following claims.