CN113846548B - Viaduct buffer insurance construction method - Google Patents
Viaduct buffer insurance construction method Download PDFInfo
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- CN113846548B CN113846548B CN202111189414.XA CN202111189414A CN113846548B CN 113846548 B CN113846548 B CN 113846548B CN 202111189414 A CN202111189414 A CN 202111189414A CN 113846548 B CN113846548 B CN 113846548B
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- buffer
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- 238000010276 construction Methods 0.000 title claims abstract description 25
- 238000009434 installation Methods 0.000 claims abstract description 22
- 239000000463 material Substances 0.000 claims abstract description 6
- 238000005260 corrosion Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 230000001680 brushing effect Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 230000003139 buffering effect Effects 0.000 abstract description 7
- 238000012423 maintenance Methods 0.000 abstract description 5
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
Abstract
The invention discloses a viaduct buffer insurance construction method, which comprises the following steps: a plurality of fixtures are arranged on the safety cable at certain intervals; sequentially installing safety cables at corresponding positions on the overhead bridge abutment, the T-shaped bridge pier and the hardened ground through the retainers; the construction method has the advantages of simple installation structure, relatively fewer parts, simple installation, capability of being additionally installed on the urban overhead which is put into use, and lower material cost and installation cost; the adoption of the unique installation structure can avoid maintenance and replacement for a long time, effectively reduces the maintenance cost of the overhead facility adopting the buffering safety structure, and can effectively reduce casualties and property loss caused by overhead overturning when the overhead overturning inevitably occurs.
Description
Technical Field
The invention relates to an engineering construction method, in particular to a capsizing buffer insurance construction method for an overhead abutment of a T-shaped pier.
Background
With the improvement of urban level, the rapid increase of urban population makes vehicles increase, the road junction of a plane overpass causes vehicle blockage and congestion, multi-layer three-dimensional layout is needed to be formed by building the overpass and overhead roads so as to improve the speed and traffic capacity, and the connection of urban circular lines and expressway networks also has to be shunted and guided through large-scale interchange to ensure smooth traffic, so that the urban overpass becomes an important sign of modern cities, and the bridge built at the crossing of roads and railways is widely applied to traffic busy areas in expressways and urban roads so as to ensure that traffic does not interfere with each other. The T-shaped bridge pier not only can reduce the weight of the pier body and save engineering materials, but also can reduce the occupied area, is more attractive, is the most common bridge pier form of the urban viaduct, can provide the largest space for the traffic under the bridge, and is particularly suitable for the condition that the viaduct and the ground road are intersected.
Although the T-shaped bridge pier has great advantages, the T-shaped bridge pier has the defects that the design is more serious to prevent the longitudinal stress of the bridge deck, the prevention of unstable overturning after the bridge abutment receives the transverse deflection load is weaker, and the bridge deck rollover accident which occurs in Jiangsu without tin on ten days of ten months of two zero and one nine years as shown in the attached figure 1 is caused by overlarge transverse deflection load due to overload of a truck. In the prior art, the anti-overturning capacity of a T-shaped bridge pier overhead is increased by installing a cable-stayed device between a bridge pier and a bridge, which is generally adopted for solving the overturning problem of the bridge, for example, the disclosure number is as follows: this is adopted in the patent documents CN205688347U and CN 207376443U. However, in reality, the overhead bridge is often overturned with transverse deflection load far greater than the maximum bearing capacity of bridge design, such as tin-free accident, and the overload weight of the overturned truck is more than two hundred tons, so that the overhead side-turning condition of the overhead bridge cannot be completely stopped by adopting the inclined-pulling device designed according to the normal index, and meanwhile, the inclined-pulling device can always be continuously impacted by the moving load on the overhead bridge after being installed, so that fatigue is easily caused to the connecting frame and inclined-pulling piece in the overhead side-pulling device, and therefore, the inclined-pulling devices need to be regularly detected, replaced and maintained, and the maintenance cost of overhead facilities is greatly increased.
Disclosure of Invention
Aiming at the problems in the background art, the invention provides a buffer insurance construction method of a viaduct, which is used for insurance and protection when the viaduct is overturned. Specifically, the viaduct buffer insurance is installed on an urban viaduct, and the installation construction comprises the following construction steps:
s1, determining the length of a safety cable and the number of retainers according to the sizes of an overhead bridge abutment and a T-shaped bridge pier on which the safety structure is installed;
s2, installing a plurality of retainers on the safety cable at certain intervals, wherein the retainers are tightly connected with the safety cable and do not move relatively;
s3, grooving on the hardened ground on one side, placing a part of the safety cable into the groove, and fixing the safety cable placed into the groove on the hardened ground through the fixing device contacted with the groove;
s4, the rest safety ropes with the retainers are installed in an extending mode from the bottom of one side face of the T-shaped bridge pier to the side face upwards, the safety ropes continue to be installed in an extending mode from the inside to the outside along the length direction of the bottom of one side face of the viaduct platform after passing through the top of one side face of the T-shaped bridge pier, and each time the safety ropes extend to one retainer, the safety ropes are fixedly installed on installation faces in contact with the safety ropes through the retainers;
s5, finally brushing anti-corrosion adhesive materials on the whole safety cable, and filling up grooves on the hardened ground on one side to restore the original state.
Further, after the step S5, the steps S3-S5 are repeated on the other sides of the overhead bridge abutment and the T-shaped pier, so that the safety ropes with the fixing devices are installed on the two sides of the overhead bridge abutment and the T-shaped pier.
Furthermore, the fixing device is provided with a connecting sleeve, and the connecting sleeve is fixedly sleeved on the safety cable to realize tight connection between the fixing device and the safety cable.
Further, the fixing device is further provided with fixing feet and fixing bolts, the fixing feet are located on two sides of the connecting sleeve, the fixing feet are provided with mounting holes, and the fixing bolts fix the fixing feet on the corresponding mounting surfaces through the mounting holes.
Further, the fixing strength of the fixing bolts in the fixing devices which are sequentially arranged on the bottom surface of one side of the viaduct platform from inside to outside is sequentially increased; the fixing strength of the fixing bolts in the fixing devices which are sequentially arranged on the side surfaces of the T-shaped bridge piers from top to bottom is sequentially increased; likewise, the fixing strength of the fixing bolts in the fixtures installed in order from approaching the T-shaped pier to the distant direction in the hardened ground increases in order; the fixing strength of all the fixing devices through the fixing bolts and the mounting surface is smaller than the breaking strength of the safety cable.
Further, the fixing bolt is specifically an expansion bolt or a chemical anchor bolt, and the fixing bolt can break or pull out the installation surface when the tension of the safety cable is too large.
Further, the length of the safety cable in the step S1 is greater than the length of the bottom surface of one side of the viaduct platform by multiplied by 2+the height of the T-shaped bridge pier, and the safety cable is in a loose state after construction and installation.
Further, the number of the fixing devices in the step S2 is more than or equal to three, and at least one fixing device is arranged on the overhead bridge abutment, the T-shaped bridge pier and the hardened ground in the step S3-step S4.
Further, the fixing device in S2 may be installed on a construction site or may be installed in advance in a production factory. .
Further, the construction step may be applied to a overpass that has been put into use.
The invention has the beneficial effects that: the smart design construction of the overpass buffering insurance can effectively reduce casualties and property loss caused by overhead overturning when the overpass is inevitably overturned, control the accident which can originally happen overhead rollover into a bridge deck tilting accident, control the accident which can originally happen bridge deck back buckling into a bridge deck rollover accident, prolong the time of the bridge deck overturning process and provide precious opportunities for evacuation of personnel and vehicles in dangerous zones. The buffer insurance has the advantages of simple arrangement structure, relatively fewer parts, simple construction and installation, and low material cost and installation cost, and can be additionally installed on the urban overhead which is put into use. The buffer safety structure of the viaduct only starts working when the viaduct is overturned, and the safety cable is in an unstressed loose state which is clung to the mounting surface of the buffer safety structure when the viaduct is used normally, so that the problem of member fatigue caused by long-term stress does not exist, the buffer safety structure can be free from maintenance and replacement for a long time, and the maintenance cost of an overhead facility adopting the buffer safety structure is effectively reduced.
Drawings
FIG. 1 is an overhead dump field diagram;
FIG. 2 is a schematic view of a overpass bumper guard structure installation;
FIG. 3 is a front view of the mounting structure of the anchor;
FIG. 4 is a side cross-sectional view of the mounting structure of the anchor;
FIG. 5 is a schematic view of a partial installation cross section of a retainer at the bottom of a overpass platform;
FIG. 6 is a schematic view of a mounting cross section of a retainer at a T-bridge pier portion;
FIG. 7 is a first tipped state without a overpass bumper guard mounted;
FIG. 8 is a first tipped state with the overpass bumper guard installed;
FIG. 9 is a second dumping condition without a overpass bumper guard mounted thereon;
fig. 10 is a second capsizing state in which the overpass buffering safety structure is installed.
Description of the reference numerals
1. An overhead abutment; 2. t-shaped bridge pier; 3. a safety cable; 4. a holder; 41. a connecting sleeve; 42. a fixed foot; 43. a fixing bolt; 5. hardening the ground.
Detailed Description
The present invention will be specifically described with reference to the following examples.
The viaduct buffer safety structure is installed on an urban viaduct, the viaduct comprises a viaduct platform 1 and T-shaped piers 2, the viaduct platform 1 is installed on the T-shaped piers 2, the T-shaped piers 2 are integrally connected with the ground through reinforced concrete pouring, and the periphery of the bottom of the T-shaped piers 2 is a hardened ground 5. The safety rope 3 is arranged on the bottom surface of one side of the overhead bridge abutment 1 along the length direction of the safety rope 3, the safety rope 3 extends from the bottom surface of the overhead bridge abutment 1 to the side surface of one side of the corresponding T-shaped bridge pier 2, and extends to the bottom of the corresponding T-shaped bridge pier along the side wall of the T-shaped bridge pier 2 in the length direction of the T-shaped bridge pier, the safety rope 3 extends deep into the hardened ground 5 at the bottom of the T-shaped bridge pier, and extends outwards in the hardened ground 5 in the direction away from the bottom of the T-shaped bridge pier 2 and perpendicular to the side surface of the bottom of the T-shaped bridge pier 2, and the length of the safety rope 3 is greater than the length of the bottom surface of one side of the overhead bridge abutment 1 by 2+the height of the T-shaped bridge pier 2. The safety cable 3 can be a stranded wire steel cable with an anti-corrosion outer layer, an iron chain or a cable made of organic polymer materials.
The safety cable 3 is fixed in the bottom surface of the overhead bridge abutment 1, the side surface of the T-shaped bridge pier 2 and the hardened ground 5 through the fixing device 4, the fixing device 4 comprises a connecting sleeve 41, a fixing pin 42 and a fixing bolt 43, the connecting sleeve 41 is fixedly sleeved on the safety cable 3 and is tightly connected with the safety cable 3 (the connecting mode can be clamping connection, welding, riveting, screwing and other modes), no relative movement occurs, the fixing pin 42 is positioned on two sides of the connecting sleeve 41, the fixing pin 42 and the connecting sleeve 41 can be integrally formed pieces, or can be manufactured and welded together respectively, the fixing pin 42 is provided with a mounting hole, the fixing bolt 43 is used for fixing the fixing pin 42 on a corresponding mounting surface through the mounting hole, so that the safety cable 3 is tightly mounted on the bottom surface of the overhead bridge abutment 1, the side surface of the T-shaped bridge pier 2 and the hardened ground 5, the fixing device 4 mounted on the bottom surface of the overhead bridge abutment 1, the side surface of the T-shaped bridge pier 2 and the hardened ground 5 is more than three, and the specific expansion bolts or chemical anchors can be selected by the fixing bolt 43.
With the fixing structure of the fixing device 4 shown in fig. 2 and 5-6, the fixing length of the fixing bolts 43 in the fixing device 4 which are sequentially arranged on the bottom surface of one side of the overhead bridge abutment 1 from inside to outside is sequentially increased, so that the connection strength of the fixing device 4 is also sequentially enhanced; the fixing length of the fixing bolts 43 in the fixing devices 4 sequentially installed from top to bottom at the side surfaces of the T-shaped bridge pier 2 is sequentially increased, so that the connection strength of the fixing devices 4 is also sequentially enhanced; also, the fixing length of the fixing bolts 43 in the anchor 4 installed in sequence from near the T-pier 2 to far from within the hardened ground 5 increases in sequence, so that the connection strength of the anchor 4 also increases in sequence. It should be noted that the strength of the connection of all the holders 4 to the mounting surface by means of the fixing bolts 43 is less than the breaking strength of the safety cable 3. Both sides of the overpass are fitted with safety cables 3 by means of holders 4 in the manner described above.
Referring to fig. 7 and 9, the existing urban viaduct is generally divided into two cases, and fig. 7 shows a first case, in which when the T-shaped bridge pier 2 is lower, the overhead bridge abutment 1 is generally in a side-turned state, that is, when a heavy load exceeds a design load on one side of the overhead bridge abutment 1, one side of the overhead bridge abutment 1 is turned up, and the other side of the overhead bridge abutment is crashed on the hardened ground, thereby causing casualties and losses. Fig. 9 shows a second situation, when the T-bridge pier 2 is higher, the overhead bridge abutment 1 that is toppled is in a back-buckled state, that is, when a heavy load exceeds the design load on one side of the overhead bridge abutment 1, the overhead bridge abutment 1 is turned over, because the T-bridge pier 2 is higher, a larger rotational impulse is obtained before the overhead bridge abutment 1 falls onto the ground, resulting in that the whole overhead bridge abutment 1 is back-buckled onto the ground, resulting in larger casualties and losses.
Referring to fig. 5-10, the working principle of the viaduct buffering safety structure is as follows: when the viaduct is in normal use, the safety rope 3 mounted in the overhead buffering safety structure is in an unstressed and relaxed state tightly attached to the mounting surface of the overhead buffering safety structure.
When a heavy load exceeds a design load on one side of the overhead bridge deck 1, one side of the overhead bridge deck 1 is tilted, the safety rope 3 arranged in the side buffer safety structure is pulled and tightened section by section, if the tension applied to a steel cable is larger than the connection strength of the fixing bolt 43 of the fixing device 4 for fixing the tightening section safety rope 3 when the overhead bridge deck 1 is turned over, the fixing device 4 of the section is detached (the fixing bolt 43 is pulled out or broken), then the next section of the fixing device 4 is entered into the tightening section of the safety rope 3, the safety rope 3 is pulled and tightened section by section, the tension F on the tilting side of the overhead bridge deck 1 is formed to be larger and larger according to the arrangement structure of the fixing devices 4 shown in fig. 5-6, and meanwhile, as the safety rope 3 of the tightening section is pulled out in sequence after the fixing device 4 arranged on the bottom surface of the overhead bridge deck 1, a larger tension moment (m=f×l) is generated, and finally the tension moment of the safety rope 3 is equal to the turning moment caused by the heavy load, so that the overhead bridge deck 1 is in a tilting state, and thus the first urban overhead bridge is effectively prevented from being overturned.
When a very heavy load appears on one side of the overhead bridge abutment 1 and greatly exceeds the designed load of the overhead bridge, when the pulling moment generated before the fixing devices 4 of all the tightening segment safety cables 3 are detached before the other side of the overhead bridge abutment 1 is smashed on the hardened ground is smaller than the overturning moment caused by the load, the overturning condition of the overhead bridge of the first kind of city inevitably occurs, but due to the effect of pulling the tightening safety cables 3 from section to section, the time of the rollover process of the overhead bridge abutment 1 is increased, the impulse of rollover of the overhead bridge abutment 1 is reduced, more reaction time is needed for vehicles and pedestrians in the rollover dangerous zone of the overhead bridge abutment 1, and the casualties and property loss caused by rollover of the overhead bridge abutment 1 can be effectively reduced.
When a very heavy load appears on one side of the overhead bridge abutment 1 and the designed load of the overhead bridge is greatly exceeded, and meanwhile, when the bridge pier is higher, the pull moment generated before the other side of the overhead bridge abutment 1 breaks the fixing devices 4 of all the tight-section safety cables 3 before being on the hardened ground are disconnected is smaller than the overturning moment caused by the load, the side turning time of the overhead bridge abutment 1 is increased due to the effect of pulling the tight-section safety cables 3 one by one, the side turning impulse of the overhead bridge abutment 1 is reduced, the state that the second overhead bridge abutment 1 shown in fig. 9 is turned over and back-buckled is converted into the side turning state of the first overhead bridge abutment 1, and more reaction time is given to vehicles and pedestrians in the side turning dangerous zone of the overhead bridge abutment 1, so that a great deal of casualties and property losses caused by the side turning back buckling of the overhead bridge abutment 1 can be effectively reduced; and because the length of the safety cable 3 is designed to be greater than the length of the bottom surface of one side of the overhead bridge abutment 1 by 2+the height of the T-shaped bridge pier 2, when the overhead bridge abutment 1 is turned over, at least one of the retainers 4 is not detached on the bottom surface of the side of the overhead bridge abutment 1 where the safety cable 3 is pulled away and in the hardened ground 5, and the secondary injury of the safety cable 3 caused by shrinkage rebound after the last retainer 4 is detached is effectively avoided.
The method for installing the viaduct buffer safety structure comprises the steps of firstly determining the length of a safety cable 3 and the number of retainers 4 according to the sizes of an overhead abutment 1 and a T-shaped pier 2 of the safety structure; then, fixing the fixing devices 4 on the safety rope 3 at certain intervals, fixedly sleeving the connecting sleeve 41 on the fixing device 4 on the safety rope 3, and tightly connecting the connecting sleeve with the safety rope 3 without relative movement; then slotting on the hardened ground 5, placing a part of the safety rope 3 into the slot, fixing the safety rope 3 placed into the slot on the hardened ground 5 through a fixing bolt 43 on a fixer 4 contacted with the slot, installing the rest safety rope 3 with the fixer 4 in a manner of extending upwards along the side surface from the side bottom of the T-shaped bridge pier 2, continuing to install the safety rope 3 outwards along the length direction of the side bottom of the viaduct platform 1 after passing through the top of the side surface of the T-shaped bridge pier 2, and fixing the safety rope 3 on a mounting surface contacted with the fixing bolt 43 on the fixer 4 when the safety rope 3 extends to one fixer 4; finally, the entire safety cable 3 is brushed with a corrosion-resistant adhesive material (e.g., asphalt) and the grooves in the hardened floor 5 are filled and restored to their original shape. By adopting the steps, the safety ropes 3 are arranged on the T-shaped bridge piers 2 of the viaduct, and the buffer safety structure of the viaduct can be arranged.
In other embodiments of the overpass buffering safety structure, not shown in the drawings, a plurality of safety cables 3 can be fixed on the same pier side to realize better protection for the overpass when the overpass is overturned, and the working principle and the construction method are the same as those of a single safety cable 3.
The above description is only illustrative of the preferred embodiments of the present application and of the principles of the technology employed. It should be noted that: terms such as up, down, front, back, left, right, and the like, herein refer only to the location of the illustrated structure in the corresponding figure. The serial numbers of the parts are used for distinguishing the described objects, and have no any sequential or technical meaning. It will be appreciated by persons skilled in the art that the scope of the invention referred to in this application is not limited to the specific combinations of features described above, but it is intended to cover other embodiments in which any combination of features described above or equivalents thereof is possible without departing from the spirit of the invention. Such as the above-described features and technical features having similar functions (but not limited to) disclosed in the present application are replaced with each other. The drawings in the present description are merely schematic structural and functional representations, which do not represent actual product dimensions, proportions and the particular structure.
Claims (7)
1. The viaduct buffer insurance installation construction method is characterized by comprising the following construction steps:
s1-determining the length of the safety cable (3) and the number of the retainers (4) according to the sizes of the overhead bridge abutment (1) and the T-shaped bridge pier (2) of the safety structure; the length of the safety cable (3) is greater than the length of the bottom surface of one side of the viaduct platform (1) multiplied by 2+the height of the T-shaped bridge pier (2), and the safety cable (3) is in a loose state after construction and installation;
s2, installing a plurality of retainers (4) on the safety cable (3) at certain intervals, wherein the retainers (4) are tightly connected with the safety cable (3) and do not move relatively;
s3-slotting on one side of the hardened ground (5), placing a part of the safety cable (3) into the slot, and fixing the safety cable (3) placed into the slot on the hardened ground (5) through the fixing device (4) contacted with the slot;
s4, installing the rest safety ropes (3) with the retainers (4) in an extending mode from the bottom of one side face of the T-shaped bridge pier (2) to the upper side face, continuing to install the safety ropes (3) outwards from inside to outside along the length direction of the bottom of one side face of the viaduct platform (1) after the safety ropes pass through the top of one side face of the T-shaped bridge pier (2), and fixedly installing the safety ropes (3) on installation faces contacted with the safety ropes through the retainers (4) when the safety ropes extend to one retainer (4); the fixing device is characterized in that the fixing device (4) is further provided with fixing feet (42) and fixing bolts (43), the fixing feet (42) are located on two sides of the connecting sleeve (41), the fixing feet (42) are provided with mounting holes, and the fixing bolts (43) fix the fixing feet (42) on corresponding mounting surfaces through the mounting holes; the fixing strength of the fixing bolts (43) in the fixing devices (4) which are sequentially arranged on the bottom surface of one side of the viaduct platform (1) from inside to outside is sequentially increased; the fixing strength of the fixing bolts (43) in the fixing devices (4) which are sequentially arranged on the side surfaces of the T-shaped bridge pier (2) from top to bottom is sequentially increased; likewise, the fixing strength of the fixing bolts (43) in the fixing devices (4) installed in sequence from approaching the T-shaped bridge pier (2) to the distance direction in the hardened ground (5) increases in sequence; the fixing strength of all the fixing devices (4) and the mounting surface through the fixing bolts (43) is smaller than the breaking strength of the safety cable (3);
s5, finally brushing an anti-corrosion adhesive material on the whole safety cable (3), and filling up grooves on the hardened ground (5) on one side to restore to the original state.
2. The viaduct buffer insurance installation construction method of claim 1, wherein: and after the step S5, repeating the steps S3-S5 on the other sides of the viaduct bridge platform (1) and the T-shaped bridge pier (2) to realize that the safety cables (3) with the retainers (4) are arranged on both sides of the viaduct bridge platform (1) and the T-shaped bridge pier (2).
3. The viaduct buffer insurance installation construction method of claim 1, wherein: the fixing device is characterized in that a connecting sleeve (41) is arranged on the fixing device (4), and the connecting sleeve (41) is fixedly sleeved on the safety rope (3) to tightly connect the fixing device (4) with the safety rope (3).
4. The viaduct buffer insurance installation construction method of claim 1, wherein: the fixing bolt (43) is specifically an expansion bolt or a chemical anchor bolt, and the fixing bolt (43) can break or pull out the installation surface when the tension of the safety cable (3) is too large.
5. The viaduct buffer insurance installation construction method of claim 1, wherein: the number of the fixing devices (4) in the S2 is more than or equal to three, and at least one fixing device (4) is arranged on the overhead bridge platform (1), the T-shaped bridge pier (2) and the hardened ground (5) in the S3-S4.
6. The viaduct buffer insurance installation construction method of claim 1, wherein: the fixing device (4) in the step S2 can be installed on a construction site or can be pre-installed in a production factory.
7. The viaduct buffer insurance installation construction method according to any one of claims 1 to 6, wherein: the method can be applied to the overpass which is already put into use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111189414.XA CN113846548B (en) | 2021-10-12 | 2021-10-12 | Viaduct buffer insurance construction method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111189414.XA CN113846548B (en) | 2021-10-12 | 2021-10-12 | Viaduct buffer insurance construction method |
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| CN113846548A CN113846548A (en) | 2021-12-28 |
| CN113846548B true CN113846548B (en) | 2023-12-29 |
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| CN205688347U (en) * | 2016-06-10 | 2016-11-16 | 袁达平 | A kind of Single column pier bridge Overthrow preventing device |
| CN207376443U (en) * | 2017-10-30 | 2018-05-18 | 上海浦东新区公路建设发展有限公司 | Only pier stud |
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| CN212247908U (en) * | 2019-12-19 | 2020-12-29 | 中国建筑第六工程局有限公司 | A prevent reinforcing structure that topples for overhead bridge |
| CN111424535A (en) * | 2020-03-18 | 2020-07-17 | 石家庄铁道大学 | Single-column type bridge antidumping reinforcing apparatus |
| CN112761059A (en) * | 2021-01-04 | 2021-05-07 | 上海市城市建设设计研究总院（集团）有限公司 | Device for preventing transverse displacement, sideslip and overturn of girder of single-column pier bridge |
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