CN108914717B - Method for in-situ overhead installation of auxiliary support by using reinforcing steel bars of integral ballast bed - Google Patents
Method for in-situ overhead installation of auxiliary support by using reinforcing steel bars of integral ballast bed Download PDFInfo
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- CN108914717B CN108914717B CN201811147111.XA CN201811147111A CN108914717B CN 108914717 B CN108914717 B CN 108914717B CN 201811147111 A CN201811147111 A CN 201811147111A CN 108914717 B CN108914717 B CN 108914717B
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- steel
- steel bars
- reinforcing
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- bar
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B1/00—Ballastway; Other means for supporting the sleepers or the track; Drainage of the ballastway
- E01B1/002—Ballastless track, e.g. concrete slab trackway, or with asphalt layers
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B3/00—Transverse or longitudinal sleepers; Other means resting directly on the ballastway for supporting rails
- E01B3/28—Transverse or longitudinal sleepers; Other means resting directly on the ballastway for supporting rails made from concrete or from natural or artificial stone
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
Abstract
The invention discloses a method for installing an auxiliary bracket in an in-situ overhead manner on an integral ballast bed reinforcing steel bar, which comprises the following steps: a tripod for manufacturing two expansion joints and a matched component; fixing top channel steel and inserting a galvanized steel pipe into the tripod; laying longitudinal steel bars, sleeving hoops and binding according to requirements; inserting the side steel bars and the bottom longitudinal steel bars into the hoops and binding the side steel bars and the bottom longitudinal steel bars according to requirements; pulling the hand hoist at a constant speed to integrally lift the steel bar; and putting the whole foundation steel bar of the integral ballast bed into the foundation groove. The method provided by the invention adopts components such as a specially-made tripod, a galvanized steel pipe, steel bars, channel steel, hook steel bars and the like to transfer the working surface of the track foundation steel bar engineering from the inside of the track foundation pit to the position right above the foundation pit, so that the spacing between the steel bars can be better controlled, the binding of the steel bars is more convenient and faster, the quality of the track steel bar engineering is integrally improved, the working space for binding the whole ballast bed steel bars is increased, the construction period is shortened, the labor force is saved, and the construction of the whole ballast bed steel bar engineering can be quickly completed.
Description
Technical Field
The invention relates to the technical field of construction of reinforced concrete engineering of a railway track concrete structure, in particular to a method for installing an auxiliary support in an in-situ overhead manner by using reinforcing steel bars of an integral ballast bed.
Background
The subway vehicle section is provided with 1 each of a blowing line, a static adjusting line, a fixed repair line, a temporary repair line, a turning wheel line and a test run line, 13 parking train inspection lines and 2 weekly monthly inspection lines which are 21 lines in total, the track lines are various, the foundation pit of the whole ballast bed is narrow, and the conventional construction technology is to perform in-situ binding on the reinforcing steel bars of the whole ballast bed at the bottom of the foundation pit.
Carry out whole railway roadbed reinforcing bar normal position reinforcement and receive the narrow and small factor influence of working space in foundation ditch bottom, main muscle cuff and ligature reinforcing bar degree of difficulty are big, are unfavorable for line production, and the very difficult problem of guaranteeing the quality.
Disclosure of Invention
Based on the defects of the prior art, the technical problem to be solved by the invention is to provide the method for installing the auxiliary support in the integral ballast bed reinforcing steel bar in-situ overhead manner, so that the working space for binding the integral ballast bed reinforcing steel bar is increased, the labor force is saved, the engineering quality is improved, and the construction of the integral ballast bed reinforcing steel bar engineering is quickly completed.
In order to solve the technical problem, the invention provides a method for in-situ overhead installation of an auxiliary bracket on an integral ballast bed steel bar, which comprises the following steps:
the method comprises the following steps:
firstly, customizing a tripod and a matched component of two expansion joints;
secondly, fixing a tripod and top channel steel at intervals of 3m, inserting a galvanized steel pipe into the tripod and hanging the galvanized steel pipe by hook steel bars;
thirdly, laying longitudinal steel bars according to the interval of the drawing, sleeving hoops and binding according to the requirement;
inserting the side steel bars and the bottom longitudinal steel bars into the hoops and binding the side steel bars and the bottom longitudinal steel bars according to requirements;
fifthly, after the binding of the foundation steel bars of the integral ballast bed of the expansion joint is finished, hanging 2 chain blocks on each tripod, simultaneously pulling the chain blocks at constant speed on the left side and the right side to integrally lift the steel bars, and removing hook steel bars and galvanized steel pipes after lifting;
sixthly, reversely pulling the hoist to place the whole foundation steel bars of the integral ballast bed into the foundation groove, and timely adjusting the distance when the anchor steel bars of the tubular pile core-filling steel bar cage collide with the large and small hoops in the descending process.
The triangular support is characterized in that a channel steel is used as a main body, and five steel bars are welded on two sides of the concave side of the channel steel to form an anti-inclination triangular body;
the first and second reinforcing steel bars on two sides of the bottom of the channel steel are welded with the channel steel at an angle of 90 degrees, the free ends of the first and second reinforcing steel bars are connected by a third reinforcing steel bar, a fourth reinforcing steel bar and a fifth reinforcing steel bar are welded 500mm below the top of the channel steel, and the free ends of the fourth reinforcing steel bar and the fifth reinforcing steel bar are welded with two ends of a third reinforcing steel bar;
a round hole with the diameter of 120mm is formed in the position 600mm away from the top of the channel steel, and a galvanized steel pipe with the length of 3.3m can penetrate through the round hole;
two long 20 cm's of top welding of channel-section steel reinforcing bars stretch out the top 12cm of channel-section steel, erect long 3.5m in the middle of two long 20 cm's of reinforcing bar the top channel-section steel, and the top channel-section steel of middle erectting is at the position welding reinforcing bar hanging hole apart from each 800mm in both ends, it has the crotch reinforcing bar to hang on the reinforcing bar hanging hole, the galvanized steel pipe of below is caught on the crotch reinforcing bar lower head.
Furthermore, the distance between the triangular supports and the track direction is less than or equal to 3m, when the auxiliary support is assembled, the upper longitudinal steel bars of the track foundation beam are arranged on the galvanized steel pipe according to the design requirement specification of a drawing, the large and small stirrups are sleeved, the stirrups and the upper longitudinal steel bars are assembled, the side steel bars and the lower longitudinal steel bars penetrate through the stirrups, and the lower steel bars are assembled in the side face and the track foundation pit.
Further, after the steel bars between the two deformation joints are completely bound, hanging 2 chain blocks on each set of tripod, simultaneously pulling the chain blocks at constant speed on the left side and the right side to integrally lift the steel bars, and removing the hooked steel bars and the galvanized steel pipes after lifting;
then reverse pull block puts into the foundation ditch with whole railway roadbed foundation reinforcing bar, and the decline in-process is if the anchor of tubular pile irritate core steel reinforcement cage goes into reinforcing bar and big hoop collision in time adjusts the interval.
Preferably, U-shaped hooks are arranged at two ends of the top channel steel, openings of the U-shaped hooks are welded on the top channel steel, and the chain block is hung on the U-shaped hooks.
Therefore, the beneficial effects of the invention are as follows: the invention adopts components such as a specially-made tripod, a galvanized steel pipe, a reinforcing steel bar, a channel steel, a hook reinforcing steel bar and the like to transfer the working surface of the rail foundation reinforcing steel bar engineering from the inside of the rail foundation pit to the position right above the foundation pit, enlarges the working space, facilitates the arrangement, hooping and binding of the reinforcing steel bars by workers, saves a large amount of labor force, shortens the construction period, has simple and easy operation and can be directly operated by site demonstration, thereby being convenient for the workers to use. In addition, compared with the existing construction method, the method for installing the auxiliary support in the integral ballast bed reinforcing steel bar in-situ overhead manner can better control the spacing of the reinforcing steel bars, the binding of the reinforcing steel bars is more convenient, and the quality of the track reinforcing steel bar engineering is integrally improved. The in-situ overhead steel bar is relatively simple to reset, and the lifted rail steel bar can be reset into the existing foundation pit through the movable hoist crane. The method for installing the auxiliary support in the in-situ overhead mode on the whole ballast bed reinforcing steel bar increases the working space for binding the whole ballast bed reinforcing steel bar, shortens the construction period, saves labor force, improves the engineering quality and can quickly finish the construction of the whole ballast bed reinforcing steel bar engineering.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented in accordance with the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more clearly understood, the following detailed description is given in conjunction with the preferred embodiments, together with the accompanying drawings.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly described below.
FIG. 1 is a flow chart of a method for in-situ overhead installation of an auxiliary support for monolithic ballast bed reinforcing steel in accordance with a preferred embodiment of the present invention;
FIG. 2 is a plan view of an in-situ overhead auxiliary support for the reinforcement of the monolithic roadbed in accordance with the preferred embodiment of the present invention;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;
figure 4 is a tripod schematic view of the in-situ overhead mounting auxiliary support for the reinforcing bars of the integral ballast bed of the preferred embodiment of the invention.
Detailed Description
Other aspects, features and advantages of the present invention will become apparent from the following detailed description, taken in conjunction with the accompanying drawings, which form a part of this specification, and which illustrate, by way of example, the principles of the invention. In the referenced drawings, the same or similar components in different drawings are denoted by the same reference numerals.
The method is applied to a north vehicle section of an airport matched with a municipal project of Shenzhen International convention and exhibition center, the address selection is located in a plot in the north of Baoan airport and in the west of a parking lot in the north of No. 11 line airport, the permanent land area of the vehicle section is about 15.6675 hectares, the temporary land area is 2.8675 hectares, and the plot is planned as a ground for airport development. As shown in fig. 1 to 4, the method for in-situ overhead installation of the auxiliary support by using the monolithic roadbed reinforcement comprises the following steps:
firstly, customizing a tripod and a matched component of two expansion joints;
secondly, fixing a tripod and a top channel steel 40 at intervals of 3m, inserting a galvanized steel pipe 30 into the tripod and hanging the galvanized steel pipe by using a hook steel bar 50;
thirdly, laying longitudinal steel bars according to the interval of the drawing, sleeving large and small hoop bands and binding according to the requirement;
inserting the side steel bars and the bottom longitudinal steel bars into the large and small hoops and binding the side steel bars and the bottom longitudinal steel bars according to requirements;
fifthly, after the foundation steel bars of the integral ballast bed of the expansion joint are bound, hanging 2 chain blocks on each tripod, simultaneously pulling the chain blocks at constant speed on the left side and the right side to integrally lift the steel bars, and removing the hook steel bars 50 and the galvanized steel pipes 30 after lifting;
sixthly, reversely pulling the hoist to place the whole foundation steel bars of the integral ballast bed into the foundation groove, and timely adjusting the distance when the anchor steel bars of the tubular pile core-filling steel bar cage collide with the large and small hoops in the descending process.
And seventhly, the whole stability of the whole steel bar binding frame must be closely concerned in the construction process.
The arrangement spacing requirement of the auxiliary support of the present invention is evident from fig. 2.
The requirements of the components of the invention can be more intuitively understood through figure 3, the tripods which play a main supporting role beside the track foundation pit adopt channel steel 10 as a main body, each tripod is composed of two tripods which have the same structure and are symmetrically arranged at two sides of the integral track bed, and five A10 steel bars are welded at two sides of the concave side of the channel steel to form an anti-inclination triangular body. As shown in fig. 4, the first and second two steel bars 21, 22 of the steel bars on both sides of the bottom of the channel 10 are welded to the channel 10 at an angle of 90 degrees, the free ends of the first and second two steel bars 21, 22 are connected by the third steel bar 23, the first, second and third steel bars are all located on the ground as a support surface, the fourth and fifth two steel bars 24, 25 are welded 500mm below the top of the channel 10, the fourth and fifth two steel bars 24, 25 are located on both sides of the groove of the channel 10, and the free ends of the fourth and fifth two steel bars 24, 25 are welded to both ends of the third steel bar 23; a round hole with the diameter of 120mm is formed in the position 600mm away from the top of the channel steel 10, and a dn100 galvanized steel pipe 30 with the length of 3.3m is erected between the two round holes. Two long 20 cm's of top welding reinforcing bar (not marking in the picture) of channel-section steel 10 stretch out the top 12cm of channel-section steel 10, erect long 3.5m in the middle of two long 20 cm's the reinforcing bar top channel-section steel 40, and the top channel-section steel 40 that erects in the middle of is at the position welding reinforcing bar hanging hole apart from each 800mm in both ends, it has crotch reinforcing bar 50 to hang on the reinforcing bar hanging hole, and the both ends of crotch reinforcing bar 50 all are provided with the crotch, and the reinforcing bar hanging hole is caught on the upper end of crotch reinforcing bar 50, the galvanized steel pipe 30 of below is caught on 50 lower ends of crotch reinforcing bar. And, the both ends of top channel-section steel 40 still are equipped with U-shaped couple 60, the opening welding of U-shaped couple 60 is in on the top channel-section steel 40, and U-shaped couple 60 is located the both ends of top channel-section steel 40, chain block hangs on U-shaped couple 60.
After the auxiliary support is arranged according to the drawing 2 and the drawing 3, the upper longitudinal steel bars of the track foundation beam are arranged on the galvanized steel pipe according to the design specification of the drawing, the large hoop and the small hoop are sleeved into the upper longitudinal steel bars and are bound according to the requirement, and the lateral steel bars and the bottom longitudinal steel bars are inserted into the large hoop and the small hoop and are bound according to the requirement. The distance between the triangular supports and the track foundation beam is smaller than or equal to 3m along the track direction, the strict spacing is too wide, when the auxiliary support is well bound, the upper longitudinal steel bars of the track foundation beam are arranged on the galvanized steel pipe 30 according to the design requirement specification of a drawing, the large and small stirrups are sleeved, the stirrups and the upper longitudinal steel bars are bound, the lateral steel bars and the lower longitudinal steel bars penetrate through the stirrups, and workers bind the lower longitudinal steel bars in the lateral sides and the track foundation pit.
After the reinforcement of the foundation of the integral ballast bed of an expansion joint is finished, the pier is uniformly arranged in the track foundation pit in advance. Resetting the in-situ overhead steel bars: each tripod is hung with 2 chain blocks (1t HSZ type chain block), the left and right sides of 2 workers simultaneously pull the chain blocks at a constant speed to make the reinforcing steel bars integrally ascend, and the hooked reinforcing steel bars 50 and the galvanized steel pipes 30 are removed after the reinforcing steel bars ascend. Then pull the calabash in the reverse direction and can put into the basis inslot with whole railway roadbed basis reinforcing bar, the decline in-process if meet the anchor of tubular pile irritate core steel reinforcement cage and go into reinforcing bar and big hoop collision and need in time adjust the interval, and the decline in-process forbids the workman strictly in track basis reinforcing bar below.
The invention adopts components such as a specially-made tripod, a galvanized steel pipe, a reinforcing steel bar, a channel steel, a hook reinforcing steel bar and the like to transfer the working surface of the rail foundation reinforcing steel bar engineering from the inside of the rail foundation pit to the position right above the foundation pit, enlarges the working space, facilitates the arrangement, hooping and binding of the reinforcing steel bars by workers, saves a large amount of labor force, shortens the construction period, has simple and easy operation and can be directly operated by site demonstration, thereby being convenient for the workers to use. In addition, compared with the existing construction method, the method for installing the auxiliary support in the integral ballast bed reinforcing steel bar in-situ overhead manner can better control the spacing of the reinforcing steel bars, the binding of the reinforcing steel bars is more convenient, and the quality of the track reinforcing steel bar engineering is integrally improved. The in-situ overhead steel bar is relatively simple to reset, and the lifted rail steel bar can be reset into the existing foundation pit through the movable hoist crane. The method for installing the auxiliary support in the in-situ overhead mode on the whole ballast bed reinforcing steel bar increases the working space for binding the whole ballast bed reinforcing steel bar, shortens the construction period, saves labor force, improves the engineering quality and can quickly finish the construction of the whole ballast bed reinforcing steel bar engineering.
While the foregoing is directed to the preferred embodiment of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow.
Claims (5)
1. A method for installing an auxiliary support in an in-situ overhead manner on an integral ballast bed steel bar is characterized by comprising the following steps: the method comprises the following steps:
firstly, customizing a tripod and a matched component of two expansion joints;
secondly, fixing a tripod and top channel steel at intervals of 3m, inserting a galvanized steel pipe into the tripod and hanging the galvanized steel pipe by hook steel bars;
thirdly, laying longitudinal steel bars according to the interval of the drawing, sleeving hoops and binding according to the requirement;
inserting the side steel bars and the bottom longitudinal steel bars into the hoops and binding the side steel bars and the bottom longitudinal steel bars according to requirements;
fifthly, after the binding of the foundation steel bars of the integral ballast bed of the expansion joint is finished, hanging 2 chain blocks on each tripod, simultaneously pulling the chain blocks at constant speed on the left side and the right side to integrally lift the steel bars, and removing hook steel bars and galvanized steel pipes after lifting;
sixthly, reversely pulling the hoist to place the whole foundation steel bars of the integral ballast bed into the foundation groove, and timely adjusting the distance when the anchor steel bars of the tubular pile core-filling steel bar cage collide with the large and small hoops in the descending process.
2. The method for in-situ overhead installation of the auxiliary support by the integral ballast bed steel bars as claimed in claim 1, wherein the method comprises the following steps: the tripod adopts channel steel as a main body, and five steel bars are welded at two sides of the concave side of the channel steel to form an anti-inclination triangular body;
the first and second reinforcing steel bars on two sides of the bottom of the channel steel are welded with the channel steel at an angle of 90 degrees, the free ends of the first and second reinforcing steel bars are connected by a third reinforcing steel bar, a fourth reinforcing steel bar and a fifth reinforcing steel bar are welded 500mm below the top of the channel steel, and the free ends of the fourth reinforcing steel bar and the fifth reinforcing steel bar are welded with two ends of a third reinforcing steel bar;
a round hole with the diameter of 120mm is formed in the position 600mm away from the top of the channel steel, and a galvanized steel pipe with the length of 3.3m can penetrate through the round hole;
two long 20 cm's of top welding of channel-section steel reinforcing bars stretch out the top 12cm of channel-section steel, erect long 3.5m in the middle of two long 20 cm's of reinforcing bar the top channel-section steel, and the top channel-section steel of middle erectting is at the position welding reinforcing bar hanging hole apart from each 800mm in both ends, it has the crotch reinforcing bar to hang on the reinforcing bar hanging hole, the galvanized steel pipe of below is caught on the crotch reinforcing bar lower head.
3. The method for in-situ overhead installation of the auxiliary support by the integral ballast bed steel bars as claimed in claim 2, wherein the method comprises the following steps: the tripod is less than or equal to 3m along the track direction interval, when installing auxiliary stand ligature earlier with the upper portion longitudinal reinforcement of track foundation beam according to drawing design requirement standard arrange on galvanized steel pipe, overlap big stirrup and small again, the ligature is good stirrup and upper portion longitudinal reinforcement, passes side reinforcing bar and lower part longitudinal reinforcement from the stirrup again, ligature lower part reinforcing bar in the track foundation hole.
4. The method for in-situ overhead installation of the auxiliary support by the integral ballast bed steel bars as claimed in claim 3, wherein the method comprises the following steps: after the reinforcing steel bars between the two deformation joints are completely bound, hanging 2 chain blocks on each set of tripod, simultaneously pulling the chain blocks at constant speed on the left side and the right side to integrally lift the reinforcing steel bars, and removing hook reinforcing steel bars and galvanized steel pipes after lifting;
then reverse pull block puts into the foundation ditch with whole railway roadbed foundation reinforcing bar, and the decline in-process is if the anchor of tubular pile irritate core steel reinforcement cage goes into reinforcing bar and big hoop collision in time adjusts the interval.
5. The method for in-situ overhead installation of the auxiliary support by the integral ballast bed steel bars as claimed in claim 1 or 2, wherein the method comprises the following steps: the two ends of the top channel steel are provided with U-shaped hooks, openings of the U-shaped hooks are welded on the top channel steel, and the chain block is hung on the U-shaped hooks.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811147111.XA CN108914717B (en) | 2018-09-29 | 2018-09-29 | Method for in-situ overhead installation of auxiliary support by using reinforcing steel bars of integral ballast bed |
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| CN201811147111.XA CN108914717B (en) | 2018-09-29 | 2018-09-29 | Method for in-situ overhead installation of auxiliary support by using reinforcing steel bars of integral ballast bed |
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| CN108914717B true CN108914717B (en) | 2019-12-27 |
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| CN204356595U (en) * | 2014-12-11 | 2015-05-27 | 中铁第四勘察设计院集团有限公司 | Medium-and low-speed maglev railway is low puts circuit continuous arch support rail girder construction |
| KR101766793B1 (en) * | 2015-11-11 | 2017-08-10 | 한국철도기술연구원 | Sliding slab track for railway bridge and construction method of sliding slab track for railway bridge |
| CN105350404B (en) * | 2015-11-21 | 2017-05-03 | 隔而固(青岛)振动控制有限公司 | Pouring type shearing hinge and application method |
| CN205990571U (en) * | 2016-08-30 | 2017-03-01 | 陕西铁路工程职业技术学院 | A kind of quick removing device based on CRTS III template |
| CN107813410A (en) * | 2017-11-17 | 2018-03-20 | 青岛科而泰环境控制技术有限公司 | Railway roadbed prefabricated board production mould with superelevation adjustment support |
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