CN113846548A - Construction method for buffer insurance of viaduct - Google Patents
Construction method for buffer insurance of viaduct Download PDFInfo
- Publication number
- CN113846548A CN113846548A CN202111189414.XA CN202111189414A CN113846548A CN 113846548 A CN113846548 A CN 113846548A CN 202111189414 A CN202111189414 A CN 202111189414A CN 113846548 A CN113846548 A CN 113846548A
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- 238000010276 construction Methods 0.000 title claims abstract description 27
- 238000009434 installation Methods 0.000 claims abstract description 28
- 230000003139 buffering effect Effects 0.000 claims abstract description 21
- 239000000463 material Substances 0.000 claims abstract description 6
- 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
- 238000012423 maintenance Methods 0.000 abstract description 3
- 230000009467 reduction Effects 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 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
- 230000008602 contraction Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 229910052742 iron Inorganic materials 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
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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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
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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
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
Abstract
The invention discloses a construction method of a buffer insurance of a viaduct, which comprises the following steps: a plurality of fixing devices are arranged on the safety cable at certain intervals; sequentially installing safety cables at corresponding positions on the elevated bridge abutment, the T-shaped bridge pier and the hardened ground through the fixator; the construction method has the advantages of simple installation structure, relatively few components, simple and convenient installation, capability of being additionally installed on the urban overhead frame which is already put into use, and lower material cost and installation cost; adopt unique mounting structure can avoid maintaining and changing for a long time, the effectual maintenance cost that reduces the overhead installation that adopts this buffering insurance structure, simultaneously can be when the inevitable emergence of overpass topples effectual reduction overhead casualties and the loss of property that brings.
Description
Technical Field
The invention relates to an engineering construction method, in particular to an overturning buffering insurance construction method for an elevated abutment of a T-shaped pier.
Background
With the improvement of the level of urbanization in China, the rapid increase of urban population leads to the increasing of vehicles, the road junctions of planar overpasses cause vehicle blockage and congestion, a multilayer three-dimensional layout needs to be formed by building overpasses and elevated roads so as to improve the vehicle speed and the traffic capacity, the connection of urban loops and an expressway network also needs to be shunted and guided through large-scale interchange overpasses so as to ensure the smooth traffic, the urban overpasses become important marks of modern cities, and bridges built at the intersections of roads and railways are widely applied to the expressway and busy traffic sections of the urban roads in order to ensure that the traffic is not interfered with each other. The T-shaped bridge pier can reduce the weight of the bridge body, save engineering materials and reduce the occupied area, is more attractive, is the most common bridge pier form of the urban viaduct, can provide the largest space for traffic under the bridge, and is particularly suitable for the condition that the viaduct and a ground road are intersected.
Although the use of the T-shaped bridge pier has great advantages, the T-shaped bridge pier also has some defects which are difficult to overcome, the design of the T-shaped bridge pier is more biased to prevent the longitudinal stress of the bridge deck, and the precaution against unstable overturning of the bridge abutment after the transverse deflection load is received is weak, just as the overhead overturning accident which is shown in figure 1 and occurs in Jiangsu without tin in two-zero-nine-month-ten days, the bridge deck is turned over due to the overlarge transverse deflection load caused by the overload of a truck. To install oblique pull device between pier and the bridge that this kind of bridge's the problem of toppling generally adopted among the prior art and increase the antidumping ability that adopts the overhead of T shape pier, for example the publication number is: this is the case in both patent documents CN205688347U and CN 207376443U. However, in reality, the transverse deflection load of the viaduct is usually far greater than the maximum bearing capacity of the bridge design, for example, a tin-free accident causes five times of overload weight of a tipping truck, and therefore, the cable-stayed device designed according to normal indexes cannot completely prevent the occurrence of the side tipping of the viaduct in an extreme state.
Disclosure of Invention
The invention provides a construction method of a buffer insurance of an elevated bridge, which is used for insurance and protection when the elevated bridge overturns. Specifically, the viaduct buffer fuse is installed on an urban viaduct, and the installation and construction of the viaduct buffer fuse comprise the following construction steps:
s1, determining the length of the safety cable and the number of the fixing devices according to the sizes of the elevated bridge abutment and the T-shaped bridge pier for installing the safety structure;
s2, mounting a plurality of fixing devices on the insurance cable at certain intervals, wherein the fixing devices are tightly connected with the insurance cable and do not move relatively;
s3-grooving the hardened ground on one side, putting a part of the safety cable into the groove, and fixing the safety cable put into the groove on the hardened ground through the fixer contacted with the groove;
s4, installing the remaining safety cables with the fasteners in a mode of extending upwards from the bottom of one side face of the T-shaped pier along the side face, passing through the top of the side face of the T-shaped pier and then continuing to extend from inside to outside along the length direction of the bottom of one side face of the elevated bridge abutment, and fixedly installing the safety cables on the installation face contacted with the fixtures through the fasteners when the safety cables extend to one fastener;
s5-finally brushing the anti-corrosion adhesive material on the whole safety cable and filling the groove on the hardened ground on the one side to restore the original state.
Further, after the step S5, repeating the steps S3-S5 on the other side of the viaduct and the T-shaped bridge pier, so that the safety cables with the retainers are mounted on both sides of the viaduct and the T-shaped bridge pier.
Furthermore, a connecting sleeve is arranged on the fixer, and the fixer is fixedly sleeved on the safety cable rope through the connecting sleeve, so that the fixer is tightly connected with the safety cable rope.
Further, the fixer is further provided with fixing feet and fixing bolts, the fixing feet are located on two sides of the connecting sleeve, mounting holes are formed in the fixing feet, and the fixing bolts fix the fixing feet on corresponding mounting surfaces through the mounting holes.
Further, the fixing strength of the fixing bolts in the fixator sequentially installed on the bottom surface of one side of the viaduct bridge from inside to outside is sequentially increased; the fixing strength of the fixing bolts in the fixator sequentially installed on the side surface of the T-shaped pier from top to bottom is sequentially increased; similarly, the fixing strength of the fixing bolts in the fixtures installed in sequence from the approach direction to the T-shaped pier to the departure direction in the hardened ground is also increased in sequence; the fixing strength of all the fixing devices and the mounting surface through the fixing bolts is smaller than the breaking strength of the safety cable.
Furthermore, the fixing bolt is specifically an expansion bolt or a chemical anchor bolt, and the fixing bolt can be broken or pulled out of the mounting surface when the tension of the safety cable is too large.
Further, in S1, the length of the safety rope is greater than the length of the one-side bottom surface of the viaduct bridge x 2+ the height of the T-shaped bridge pier, and the safety rope is in a relaxed state after construction and installation.
Further, the number of the retainers in S2 is equal to or greater than three, and at least one of the retainers installed on the elevated abutment, the T-shaped pier and the hardened ground in S3-S4.
Further, the installation of the fixture in S2 may be performed at a construction site, or may be performed in advance at a production plant. .
Further, the construction step may be applied to a viaduct already put into use.
The invention has the beneficial effects that: this overhead bridge buffering insurance's ingenious design and construction can effectual reduction overhead frame topple when the unavoidable emergence of overhead bridge topples and brings casualties and loss of property, will originally can take place the accident control that the overhead frame turned on one's side for the bridge floor slope accident, will originally can take place the accident control that the bridge floor left-hand thread is the accident of turning on one's side for the bridge floor, has prolonged the time of bridge floor toppling process simultaneously, provides the valuable opportunity for personnel and the vehicle evacuation in danger area. The buffering safety is simple in arrangement structure, relatively few in parts, simple and convenient to construct and install, capable of being additionally installed on an overhead city frame which is already put into use, and low in material cost and installation cost. The buffering safety structure of the viaduct only starts to work when the viaduct is overturned, and the safety cable is in an unstressed loose state tightly attached to the installation surface of the safety cable when the viaduct is normally used, so that the problem of component fatigue caused by long-term stress does not exist, the viaduct buffering safety structure can be free of maintenance and replacement for a long time, and the maintenance cost of an viaduct facility adopting the buffering safety structure is effectively reduced.
Drawings
FIG. 1 is an elevated overturning site view;
FIG. 2 is a schematic view of the installation of the buffering and safety structure of the viaduct;
FIG. 3 is a front view of the mounting structure of the anchor;
FIG. 4 is a side sectional view of the mounting structure of the anchor;
FIG. 5 is a schematic view of a partially installed section of the anchor at the bottom of an elevated abutment;
FIG. 6 is a schematic sectional view of the anchor installed on a T-shaped pier portion;
fig. 7 is a first overturning state of the viaduct buffering and safety structure not installed;
fig. 8 is a first overturning state in which the viaduct buffering and safety structure is installed;
fig. 9 is a second overturning state of the viaduct buffering and securing structure not installed;
fig. 10 shows a second overturning state in which the viaduct buffering and securing structure is installed.
Description of the reference numerals
1. An elevated abutment; 2. a T-shaped bridge pier; 3. a safety cable; 4. a holder; 41. a connecting sleeve; 42. a fixing leg; 43. fixing the bolt; 5. the ground is hardened.
Detailed Description
The present invention will be described in detail with reference to specific examples.
The viaduct buffering and protecting structure shown in fig. 2-4 is installed on an urban viaduct, the viaduct includes a viaduct platform 1 and a T-shaped bridge pier 2, the viaduct platform 1 is installed on the T-shaped bridge pier 2, the T-shaped bridge pier 2 is connected with the ground into a whole through reinforced concrete pouring, and the periphery of the bottom of the T-shaped bridge pier 2 is a hardened ground 5. The bottom surface of one side of the elevated abutment 1 extends along the length direction of the elevated abutment and is provided with a safety cable 3, the safety cable 3 extends from the bottom surface of the elevated abutment 1 to the side surface of one side of the corresponding T-shaped pier 2 and continues to extend to the bottom of the elevated abutment 2 along the length direction of the T-shaped pier 2, the safety cable 3 extends deeply into the hardened ground 5 at the bottom of the T-shaped pier and continues to extend outwards in the hardened ground 5 in the direction which is far away from the bottom of the T-shaped pier 2 and is vertical to the side surface of the bottom of the T-shaped pier 2, and the length of the safety cable 3 is greater than the length multiplied by 2 of the bottom surface of one side of the elevated abutment 1 and the height of the T-shaped pier 2. The safety cable 3 can be a stranded wire steel cable with an anti-corrosion outer layer, an iron lock chain or a cable made of organic polymer materials.
The safety cable 3 is fixed on the bottom surface of the elevated abutment 1, the side surface of the T-shaped pier 2 and the hardened ground 5 through the fixer 4, the fixer 4 comprises a connecting sleeve 41, a fixing foot 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, welding, riveting, screwing and the like) without relative movement, the fixing foot 42 is positioned on the two sides of the connecting sleeve 41, the fixing foot 42 and the connecting sleeve 41 can be integrally formed parts or can be manufactured and welded together respectively, the fixing foot 42 is provided with a mounting hole, the fixing bolt 43 fixes the fixing foot 42 on the corresponding mounting surface through the mounting hole, thereby the safety cable 3 is tightly mounted on the bottom surface of the elevated abutment 1, the side surface of the T-shaped pier 2 and the hardened ground 5 and is mounted on the bottom surface of the elevated abutment 1, There are more than three anchors 4 on the side of the T-pier 2 and in the hardened ground 5, and the anchor bolts 43 may be specifically selected from expansion bolts or chemical anchors.
With reference to the installation structure of the fixator 4 shown in fig. 2 and 5-6, the fixed lengths of the fixing bolts 43 in the fixator 4 sequentially installed from inside to outside on the bottom surface of one side of the elevated abutment 1 are sequentially increased, so that the connection strength of the fixator 4 is sequentially enhanced; the fixed lengths of the fixing bolts 43 in the fixtures 4 sequentially installed from top to bottom on the side surfaces of the T-shaped pier 2 are sequentially increased, so that the connection strength of the fixtures 4 is also sequentially enhanced; also, the fixed lengths of the fixing bolts 43 in the anchor 4 sequentially installed from the vicinity of the T pier 2 to the distance from within the hardened ground 5 sequentially increase, so that the connection strength of the anchor 4 is also sequentially strengthened. It should be noted that the connection strength of all the anchors 4 to the mounting surface via the fixing bolts 43 is less than the breaking strength of the safety cable 3. The safety cables 3 are arranged on both sides of the viaduct through the fixing devices 4 in the above mode.
Referring to fig. 7 and 9, the conventional urban viaduct generally has two types of overturn conditions, and fig. 7 shows a first condition that when the T-shaped bridge pier 2 is low, the overturned viaduct 1 generally assumes a side-turning state, that is, when a heavy load occurs on one side of the viaduct 1 and exceeds the design load, one side of the viaduct 1 tilts, and the other side of the viaduct hits on the hardened ground, thereby causing casualties and losses. Fig. 9 shows a second case, when the T-shaped bridge pier 2 is higher, the overturned viaduct abutment 1 is in an inversely buckled state, that is, when a heavier load is present on one side of the viaduct abutment 1 and exceeds the designed load, the viaduct abutment 1 turns over, and because the T-shaped bridge pier 2 is higher, a larger rotating impulse is obtained before the viaduct abutment 1 falls on the ground, so that the whole viaduct abutment 1 is inversely buckled on the ground, and a larger casualty and loss are caused.
With reference to fig. 5-10, the working principle of the viaduct buffering and safety structure is as follows: when the viaduct is in normal use, the safety cable 3 mounted in the buffer safety structure on the viaduct is in an unstressed loose state and clings to the mounting surface of the safety cable.
When a heavy load on one side of the elevated bridge abutment 1 exceeds a designed load, one side of the elevated bridge abutment 1 is tilted, the safety cable 3 installed in the side buffering safety structure is pulled and tightened section by section, if a pulling force exerted on a steel cable when the elevated bridge abutment 1 is turned sideways is greater than the connection strength of the fixing bolt 43 of the fixing device 4 of the current fixing and tightening section safety cable 3, the fixing device 4 of the section is disengaged (the fixing bolt 43 is pulled out or broken), and then enters the tightening section of the safety cable 3 formed by the next section of fixing device 4, as the safety cable 3 is pulled and tightened section by section, according to the arrangement structure of the fixing devices 4 shown in the attached drawings 5-6, the pulling force F formed on the tilted side of the elevated bridge abutment 1 is greater, and simultaneously, as the safety cable 3 installed on the bottom surface of the elevated bridge abutment 1 is sequentially disengaged from inside to outside, the tightening section generates a greater pulling moment (M = F × L), when the tension moment of the final safety cable 3 is equal to the overturning moment caused by a heavy load, the viaduct abutment 1 is in an inclined state, and the overturning condition of the first urban viaduct is effectively avoided.
When a very heavy load appears on one side of the viaduct 1 and greatly exceeds the designed load of the viaduct, when the pulling moment generated before the fixing devices 4 of all the tight section safety cables 3 before the other side of the viaduct 1 smashes on the hardened ground are disengaged is smaller than the overturning moment caused by the load, the overturning condition of the first urban viaduct inevitably occurs, but due to the action of pulling the tight safety cables 3 section by section, the time of the rollover process of the viaduct 1 is increased, the rollover impulse of the viaduct 1 is reduced, the time for vehicles and pedestrians in the rollover dangerous zone of the viaduct 1 is shortened, and the casualties and property loss caused by the rollover of the viaduct 1 can be effectively reduced.
When a very heavy load appears on one side of the elevated bridge abutment 1, the designed load of the elevated bridge is greatly exceeded, and meanwhile, when the pier is higher, the pulling moment generated before the fixers 4 of all the tight section safety cables 3 before the other side of the elevated bridge abutment 1 is hammered on the hardened ground are disengaged is smaller than the overturning moment caused by the load, due to the action of pulling the tight safety cables 3 one by one, the side overturning time of the elevated bridge abutment 1 is increased, and the side overturning impulse of the elevated bridge abutment 1 is reduced, the overturning and reversely buckled state of the second elevated bridge abutment 1 shown in fig. 9 is converted into the side overturning state of the first elevated bridge abutment 1, and more reaction time is provided for vehicles and pedestrians in the side overturning dangerous zone of the elevated bridge abutment 1, so that a great amount of casualties and property loss caused by the overturning and reversely buckled state of the elevated bridge abutment 1 can be effectively reduced; and because the length of the safety cable 3 is greater than the length multiplied by 2 of the bottom surface of one side of the elevated abutment 1 and the height of the T-shaped pier 2, when the elevated abutment 1 turns on one side, at least one fixer 4 is arranged on the bottom surface of the side-pulled elevated abutment 1 and in the hardened ground 5 of the safety cable 3 without disengagement, and secondary injury caused by contraction and rebound of the safety cable 3 after the last fixer 4 is disengaged is effectively avoided.
The installation method of the viaduct buffering and protecting structure comprises the steps of firstly determining the length of a protecting cable 3 and the number of fixing devices 4 according to the sizes of an viaduct abutment 1 and a T-shaped pier 2 which need to install the protecting structure; then, the fixing devices 4 are arranged on the safety cable 3 at certain intervals, and the connecting sleeve 41 on the fixing device 4 is fixedly sleeved on the safety cable 3 and is tightly connected with the safety cable 3 without relative movement; then, a groove is formed in the hardened ground 5, a part of the safety cable 3 is placed in the groove, the safety cable 3 placed in the groove is fixed on the hardened ground 5 through a fixing bolt 43 on a fixer 4 contacted with the groove, the rest safety cable 3 with the fixer 4 extends upwards from the bottom of the side face of the T-shaped pier 2 along the side face, passes through the top of the side face of the T-shaped pier 2 and then continues to extend along the length direction of the bottom of one side face of the elevated abutment 1 from inside to outside, and the safety cable 3 is fixedly installed on an installation face contacted with the fixer 4 through the fixing bolt 43 on the fixer 4 when the fixer 4 extends to each side; finally, the entire safety cable 3 is brushed with an anti-corrosive adhesive material (e.g., asphalt) and the grooves in the hardened ground 5 are filled to restore the original shape. The installation of the viaduct buffering and protecting structure can be completed by installing the protecting cables 3 on the T-shaped piers 2 of the viaduct through the steps.
In other embodiments of the viaduct buffering and protecting structure not shown in the drawings, a plurality of protecting cables 3 can be fixed on the same bridge pier side to achieve better protection when the viaduct overturns, and the working principle and the construction method of the viaduct buffering and protecting structure are the same as those of a single protecting cable 3.
The above description is only a preferred embodiment of the present application and is illustrative of the principles of the technology employed. It should be noted that: the words upper, lower, front, rear, left, right, and the like used herein to indicate orientation are merely for the location of the illustrated structure in the corresponding drawings. The numbering of the parts as such is used herein only to distinguish the objects described and not to have any sequential or technical meaning. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application. The drawings in the present specification are merely schematic structural and functional illustrations that are not intended to represent actual product dimensions, proportions, or exact structures.
Claims (10)
1. The viaduct buffering 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 fixers (4) according to the sizes of the elevated abutment (1) and the T-shaped pier (2) required to be provided with the safety structure;
s2, mounting a plurality of fixing devices (4) on the insurance cable (3) at certain intervals, wherein the fixing devices (4) are tightly connected with the insurance cable (3) and do not move relatively;
s3-slotting the hardened ground (5) on one side, putting a part of the safety cable (3) into the slot, and fixing the safety cable (3) put into the slot on the hardened ground (5) through the fixer (4) contacted with the slot;
s4, installing the remaining safety cables (3) with the retainers (4) in a mode of extending upwards from the bottom of one side face of the T-shaped pier (2) along the side face, passing through the top of the side face of the T-shaped pier (2), continuing to extend along the length direction of the bottom of one side face of the elevated abutment (1) from inside to outside, and fixedly installing the safety cables (3) on the installation face in contact with the retainers (4) through the retainers (4) when each fastener (4) extends to one;
s5, finally brushing an anticorrosive adhesive material on the whole safety cable (3) and filling the groove on the hardened ground (5) on one side to restore the original shape.
2. The viaduct bumper installation construction method according to claim 1, characterized in that: and after the step S5, repeating the steps S3-S5 on the other side of the elevated abutment (1) and the T-shaped pier (2) to realize that the safety cable (3) with the fixer (4) is arranged on both sides of the elevated abutment (1) and the T-shaped pier (2).
3. The viaduct bumper installation construction method according to claim 1, characterized in that: the safety mooring rope fixing device is characterized in that a connecting sleeve (41) is arranged on the fixer (4), and the safety mooring rope (3) is fixedly sleeved with the connecting sleeve (41) to realize tight connection between the fixer (4) and the safety mooring rope (3).
4. The viaduct bumper installation construction method according to claim 3, characterized in that: the fixing device is characterized in that fixing feet (42) and fixing bolts (43) are further arranged on the fixing device (4), the fixing feet (42) are located on two sides of the connecting sleeve (41), mounting holes are formed in the fixing feet (42), and the fixing bolts (43) are fixed on corresponding mounting surfaces through the mounting holes.
5. The viaduct bumper installation construction method according to claim 4, wherein: the fixing strength of the fixing bolts (43) in the fixator (4) sequentially installed from inside to outside on the bottom surface of one side of the elevated abutment (1) is sequentially increased; the fixing strength of the fixing bolts (43) in the fixing devices (4) which are sequentially arranged from top to bottom on the side surface of the T-shaped pier (2) is sequentially increased; similarly, the fixing strength of the fixing bolts (43) in the retainers (4) installed in sequence from the approach direction to the T-shaped pier (2) to the departure direction in the hardened ground (5) also increases in sequence; the fixing strength of all the retainers (4) to the mounting surface through the fixing bolts (43) is smaller than the breaking strength of the safety cable (3).
6. The viaduct bumper installation construction method according to claim 4, wherein: the fixing bolt (43) is specifically an expansion bolt or a chemical anchor bolt, and the fixing bolt (43) can be broken or pulled out of a mounting surface when the tension of the safety cable (3) is too large.
7. The viaduct bumper installation construction method according to claim 1, characterized in that: in the step S1, the length of the safety cable (3) is greater than the length of the bottom surface on one side of the elevated abutment (1) × 2+ the height of the T-shaped pier (2), and the safety cable (3) is in a slack state after construction and installation.
8. The viaduct bumper installation construction method according to claim 1, characterized in that: the number of the retainers (4) in the S2 is not less than three, and at least one retainer (4) is installed on the elevated abutment (1), the T-shaped pier (2) and the hardened ground (5) in the S3-S4.
9. The viaduct bumper installation construction method according to claim 1, characterized in that: the installation of the fixture (4) in S2 may be performed at a construction site, or may be performed in advance at a production plant.
10. The viaduct buffering insurance installation construction method according to claims 1-9, characterized in that: the method can be applied to viaducts which are 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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|---|---|---|---|
| CN202111189414.XA CN113846548B (en) | 2021-10-12 | 2021-10-12 | Viaduct buffer insurance construction method |
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| CN113846548A true CN113846548A (en) | 2021-12-28 |
| CN113846548B 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 |
| CN207525597U (en) * | 2017-07-18 | 2018-06-22 | 金华职业技术学院 | A kind of overpass access bridge building for having overturning-preventing and reducing wound |
| 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 |
| CN211446563U (en) * | 2019-12-12 | 2020-09-08 | 张明 | Cable-stayed bridge pile |
| 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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| CN113846548B (en) | 2023-12-29 |
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