CN109778596B - trapezoidal prefabricated slab with auxiliary blocks and construction method thereof - Google Patents
trapezoidal prefabricated slab with auxiliary blocks and construction method thereof Download PDFInfo
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- CN109778596B CN109778596B CN201810937020.XA CN201810937020A CN109778596B CN 109778596 B CN109778596 B CN 109778596B CN 201810937020 A CN201810937020 A CN 201810937020A CN 109778596 B CN109778596 B CN 109778596B
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Abstract
The invention discloses a trapezoid precast slab with auxiliary blocks and a construction method thereof, wherein the auxiliary blocks are arranged below the trapezoid precast slab, the auxiliary block is of a reinforced concrete structure, the outside of the auxiliary block is provided with an anchoring rib, the top of the auxiliary block bears the precast slab, and a vibration isolation element is arranged between the auxiliary block and the precast slab, the auxiliary block and the base are cast into a whole, and the top of the auxiliary block is higher than that of the base, so that the space between the cast-in-place concrete and the bottom of the precast slab is greatly increased compared with the traditional scheme, not only can save the isolating material and the wrapping sleeve in the traditional construction scheme, but also can avoid the adhesion of the precast slab and the cast-in-place concrete foundation, in addition, the concrete vibration and plastering operation can be convenient after the space is increased, therefore, empty hanging between the vibration isolation element and the concrete base is avoided, and finally, the raised steel bars can be prevented from propping the vibration isolation element and even the trapezoidal precast slab due to irregular binding of the steel bars on the ballast bed foundation; the height-adjusting structure of the spiral column is also arranged in the trapezoidal precast slab and can adjust the height of the trapezoidal precast slab.
Description
Technical Field
The invention relates to the field of rail transit, in particular to the technical field of trapezoidal prefabrication in rail transit.
Background
In recent years, the rapidly developed rail transit greatly facilitates the traveling of residents, and the characteristics of large traveling density, short interval, incapability of maintaining and maintaining in daytime and the like of the urban rail transit determine that the ballastless rail structure is adopted by the urban rail transit, wherein the rail adopting the trapezoidal prefabricated slab is generally constructed by adopting a rail hanging method in the construction process, namely, a rail panel is suspended above a steel bar cage, a concrete base is poured, and the prefabricated slab is isolated from the surrounding cast-in-place concrete by using an isolating material and a wrapping sleeve in the process so as to prevent the prefabricated slab from being adhered to the cast-in-place concrete; however, in the field construction process, field workers are inevitably and not fine enough to operate, the expected degree of all the parts cannot be guaranteed, and when a wrapping sleeve or an isolation material is damaged or is not wrapped in place, a bottom cast-in-place base is easy to adhere to a precast slab during pouring, so that a vibration damping short circuit, namely hard touch and hardness, is formed, and the vibration isolation element cannot play a role; on the other hand, because the area of the precast slab is large, under certain special adverse conditions, the lower part of a part of the damping pad has a cavity due to negligence or difficulty of pouring or vibrating during construction; in addition, field procedures can be increased by installing the wrapping sleeve and the isolation material on the field, laying efficiency is influenced, and laying cost is increased.
For the above reasons, the present inventors have made intensive studies on the existing trapezoidal prefabricated panel and the construction method thereof, and have awaited the design of a new trapezoidal prefabricated panel and a corresponding construction method capable of solving the above problems.
Disclosure of Invention
in order to overcome the above problems, the present inventors have conducted intensive studies and designed a trapezoidal precast slab with auxiliary blocks and a construction method thereof, in which the auxiliary blocks are concrete blocks, anchoring ribs are provided inside the concrete blocks, the tops of the auxiliary blocks support the precast slab, and vibration isolation elements are provided between the auxiliary blocks and the precast slab, the auxiliary blocks are cast integrally with a base, and the tops of the auxiliary blocks are slightly higher than the tops of the base, so that the space between cast-in-place concrete and the bottom of the precast slab is greatly increased as compared with the conventional construction method, thereby eliminating the need for an isolating material and a wrapping sleeve in the conventional construction method, preventing the precast slab from adhering to the cast-in-place concrete foundation, and facilitating the concrete vibrating and plastering operation after the space is increased, thereby preventing a gap (empty hanging) from being generated between the vibration isolation elements and the concrete base, and finally preventing the roadbed foundation from being irregular due to the binding of the reinforcing bars, the steel bars having protrusions abut against the vibration isolating members and even the trapezoidal prefabricated panels, thereby completing the present invention.
Specifically, the invention aims to provide a trapezoidal prefabricated slab with auxiliary blocks, which comprises a prefabricated slab body 1, wherein the auxiliary block 2 is arranged at the bottom of the prefabricated slab body 1;
Between the prefabricated panel body 1 and the auxiliary block 2 is provided a vibration isolating member 3,
The auxiliary block 2 is placed on a base 4,
an anchoring rib 5 is arranged on the auxiliary block 2, and the anchoring rib 5 penetrates out of the auxiliary block 2 and extends into the base 4; and the auxiliary block 2, the anchoring rib 5 and the base 4 are poured and fixedly combined into a whole.
the auxiliary block 2 is strip-shaped, and the section of the auxiliary block is rectangular;
A plurality of auxiliary blocks 2 are uniformly distributed under each prefabricated panel body 1, and a vibration isolating member 3 is disposed between each auxiliary block 2 and the prefabricated panel body 1.
Wherein the top surface heights of the auxiliary blocks 2 are all higher than the top surface height of the base 4;
The height difference between the top surface of the auxiliary block 2 and the top surface of the base 4 is not less than 15 mm.
An internal thread sleeve 6 is pre-embedded in the precast slab body 1, and a spiral column 7 penetrating through the precast slab body 1 is arranged in the internal thread sleeve 6;
The bottom end of the spiral column 7 abuts against the vibration isolation element 3, and the spiral column 7 is used for pressing the vibration isolation element 3 downwards or jacking the prefabricated plate body 1 upwards.
wherein, the bottom of the spiral column 7 is provided with a bearing plate 8,
the vibration isolation element 3 is fixedly connected with the bearing plate 8 into a whole;
the spiral column 7 is abutted with the vibration isolation element 3 through a bearing plate 8;
preferably, a blind hole is formed on the upper surface of the bearing plate 8, the bottom of the spiral column 7 is embedded into the blind hole, and the spiral column 7 can rotate relative to the bearing plate 8 in the blind hole.
wherein, the bottom of the spiral column 7 is provided with a bearing plate 8,
the spiral column 7 is fixedly connected with the bearing plate 8 into a whole,
The spiral column 7 is abutted with the vibration isolation element 3 through a bearing plate 8;
preferably, the screw column 7 comprises an upper thread section 71 and a lower polish rod section 72 which are coaxial and can rotate relatively, the upper thread section 71 is matched with the internal thread sleeve 6, and the bottom of the lower polish rod section 72 is fixedly connected with the bearing plate 8 into a whole.
The invention also provides a construction method of the trapezoidal precast slab with the auxiliary blocks, which comprises the following steps:
Step 1: a steel bar cage for pouring the base 4 is built on the structural bottom plate;
step 2: assembling the precast slab body 1 and the steel rail into a rail panel, placing the auxiliary block 2 at the bottom of the rail panel, and enabling the auxiliary block 2, the vibration isolation element 3 and the precast slab body 1 to be attached to each other;
And step 3: suspending the track panel above the reinforcement cage and adjusting the position of the track panel;
and 4, step 4: pouring concrete into the steel bar cage to form a base 4, so that the height of the top surface of the base 4 is not higher than that of the top surface of the auxiliary block 2, and the height difference between the top surface of the auxiliary block 2 and the top surface of the base 4 is not less than 15 mm.
in the step 2, the internal thread sleeve 6 and the spiral column 7 are both positioned inside the precast slab body 1;
Preferably, the transverse anchoring ribs 51 protruding from the auxiliary blocks 2 are fixed integrally with the prefabricated panel body 1 by strapping bands and clamp the vibration insulating elements 3;
more preferably, the exposed strapping band is removed after construction is completed.
In the trapezoidal precast slab with the auxiliary blocks and the construction method thereof provided by the invention, the space between the cast-in-place concrete and the bottom of the precast slab is greatly increased compared with the traditional scheme by arranging the auxiliary blocks, so that an isolating material and a wrapping sleeve in the traditional construction scheme can be saved, the precast slab can be prevented from being adhered to a cast-in-place concrete foundation, in addition, the concrete can be conveniently vibrated and plastered after the space is increased, and thus, a gap (empty hanging) between a vibration isolation element and a concrete base is avoided, and finally, the condition that the vibration isolation element or even the trapezoidal precast slab is supported by a protruded steel bar due to the irregular binding of the steel bar on a roadbed foundation can be avoided; in the invention, the bearing plate is additionally arranged between the trapezoidal prefabricated plate and the vibration damping pad and is pressed against the vibration isolation element, so that the stress area of the vibration isolation element is enlarged, the damage is avoided, the spiral column and the internal thread sleeve are arranged in the prefabricated plate, and when the vibration isolation element part of the trapezoidal prefabricated plate is subjected to idle hanging on the vibration isolation element part due to uneven settlement of a base or other reasons, the bearing plate and the vibration isolation element can be downwards adjusted through the spiral stud height adjusting device, so that the idle hanging is eliminated.
drawings
FIG. 1 is a schematic view showing an overall structure of a trapezoidal prefabricated panel with auxiliary blocks according to a preferred embodiment of the present invention;
FIG. 2 illustrates a partial cross-sectional view of a trapezoidal prefabricated panel with an auxiliary block according to a preferred embodiment of the present invention;
FIG. 3 illustrates a partial side view of a trapezoidal prefabricated panel with auxiliary blocks according to a preferred embodiment of the present invention;
FIG. 4 is a plan view illustrating an auxiliary block of the trapezoidal prefabricated panel with the auxiliary block according to a preferred embodiment of the present invention;
FIG. 5 illustrates a side view of an auxiliary block in the trapezoidal prefabricated panel with the auxiliary block according to a preferred embodiment of the present invention;
FIG. 6 is a schematic view showing a structure when the spiral columns of the trapezoidal prefabricated panel with the auxiliary blocks are lifted according to example 1 of the present invention;
FIG. 7 is a schematic view showing the construction of a trapezoidal prefabricated panel with auxiliary blocks according to example 2 of the present invention;
FIG. 8 shows a partial enlarged view of area A of FIG. 7;
fig. 9 shows a schematic structural view of the transmission member.
the reference numbers illustrate:
1-precast slab body
2-auxiliary block
3-vibration isolation element
4-base
5-anchoring bar
51-transverse anchoring rib
52-longitudinal anchoring rib
53-vertical anchoring bar
6-internal thread sleeve
7-spiral column
71-Upper thread segment
72-lower polish rod segment
8-bearing plate
9-Transmission Member
91-spherical ball
92-limiting frame
Detailed Description
the invention is explained in more detail below with reference to the figures and examples. The features and advantages of the present invention will become more apparent from the description.
The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. While the various aspects of the embodiments are presented in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.
According to the trapezoidal prefabricated panel with the auxiliary blocks provided by the invention, as shown in fig. 1, 2 and 3, the prefabricated panel comprises a prefabricated panel body 1, wherein the auxiliary blocks 2 are arranged at the bottom of the prefabricated panel body 1; the auxiliary block 2 is a concrete block, and the precast slab body 1 comprises two longitudinal beams and a connecting steel pipe positioned between the two longitudinal beams; the length direction of the longitudinal beam is consistent with that of the steel rail;
A vibration isolation element 3 is arranged between the precast slab body 1 and the auxiliary block 2, and the vibration isolation element can be a vibration damping pad, such as a rubber vibration damping pad or a polyester vibration damping pad, and can also be other vibration damping and isolating devices;
The auxiliary block 2 is placed on a base 4, and the base 4 is a concrete base;
An anchoring rib 5 is arranged on the auxiliary block 2, and the anchoring rib 5 penetrates out of the auxiliary block 2 and extends into the base 4; and the auxiliary block 2, the anchoring ribs 5 and the base 4 are poured and fixed into a whole, namely the auxiliary block 2 and the base 4 are poured into a whole while the base 4 is formed by pouring concrete.
preferably, as shown in fig. 4 and 5, the anchoring ribs 5 comprise transverse anchoring ribs 51, longitudinal anchoring ribs 52 and vertical anchoring ribs 53; the transverse direction in the invention refers to the direction vertical to the steel rail on the horizontal plane, and the longitudinal direction refers to the direction along the steel rail; preferably, the transverse anchor bar 51 is a straight bar, and the longitudinal anchor bar 52 and the vertical anchor bar 53 are made of one steel bar.
The transverse anchoring rib 51 is arranged along the length direction of the auxiliary block 2, and two ends of the transverse anchoring rib extend out of the auxiliary block 2;
One end of the vertical anchoring rib 53 is located inside the auxiliary block 2, the other end of the vertical anchoring rib extends downwards, the length of the extending part of the vertical anchoring rib 53 is larger than that of the extending part of the transverse anchoring rib 51, and preferably, the extending part extends into the bottom of the base 4.
preferably, as shown in fig. 3 and 4, two or more transverse anchoring ribs 51 are provided in parallel with each other in the auxiliary block 2;
the longitudinal anchoring ribs 52 are embedded in the auxiliary block 2 and positioned outside the two adjacent transverse anchoring ribs 51 to hoop the transverse anchoring ribs 51; both ends of the longitudinal anchoring rib 52 are connected with the transverse anchoring rib 51; namely, the longitudinal anchoring ribs 52 are used to connect the plurality of transverse anchoring ribs 51 to each other;
One end of the vertical anchoring rib 53 positioned inside the auxiliary block 2 is connected with the transverse anchoring rib 51 or the longitudinal anchoring rib 52.
preferably, as shown in fig. 1, 2, 3, 4 and 5, the auxiliary block 2 is elongated, and its cross section is rectangular;
a plurality of auxiliary blocks 2 are uniformly distributed below each prefabricated plate body 1, and a vibration isolation element 3 is arranged between each auxiliary block 2 and each prefabricated plate body 1;
Preferably, the auxiliary block supports the vibration isolation member, and an area of a contact surface of the auxiliary block with the vibration isolation member is larger than an area of the vibration isolation member, that is, the auxiliary block can completely support the vibration isolation member.
In a preferred embodiment, the height of the top surface of the auxiliary block 2 is higher than the height of the top surface of the base 4; the prefabricated plate is only contacted with the auxiliary block and is not contacted with other parts on the base;
Preferably, the height difference between the top surface of the auxiliary block 2 and the top surface of the base 4 is not less than 15mm, and more preferably 15-20 mm; the height difference can guarantee the structural strength of the base, and the base can be sufficiently vibrated and leveled in the pouring process.
in a preferred embodiment, as shown in fig. 6 and 7, an internally threaded sleeve 6 is embedded in the prefabricated plate body 1, and a spiral column 7 penetrating through the prefabricated plate body 1 is arranged inside the internally threaded sleeve 6;
the bottom end of the spiral column 7 is abutted against the vibration isolation element 3, and the spiral column 7 is used for pressing the vibration isolation element 3 downwards or jacking the prefabricated plate body 1 upwards; in particular, the screw column 7 is used to top the prefabricated panel body 1 when repairing the foundation 4 and/or replacing the vibration-isolating elements; the jacking/jacking prefabricated plate body 1 provides an operation space for maintaining the base and replacing the vibration isolation element; on the basis of the fact that the prefabricated panel body 1 is lifted up by the screw column 7 so that the contact between the prefabricated panel body 1 and the base is released with a distance of at least 100mm when replacing the vibration isolating elements or repairing/filling the empty crane, a support member such as a jack, a skid, etc. can be optionally placed between the prefabricated panel body 1 and the base for temporary support. So that a maintainer can extract and peel the failed vibration isolation element and place a new vibration isolation element at a preset position, and can also place a mortar bag below the vibration isolation element or the prefabricated slab body 1 and pour mortar or concrete and the like so as to fill and level the empty hanging area;
In addition, the ejector pin is also used to uniformly distribute and apply the weight of the track plate body to the foundation, that is, to press the vibration damping member downward, when the foundation is locally settled and the filling work is temporarily impossible due to time, environment, or cost.
The structure and the position relationship among the spiral column, the prefabricated plate body 1 and the vibration isolation element 3 can be various, and various feasible specific schemes are provided in the application through the following embodiments:
example 1: as shown in fig. 6, a support plate 8 is provided at the bottom of the screw column 7,
The vibration isolation element 3 is fixedly connected with the bearing plate 8 into a whole; preferably the vibration insulating element 3 is glued to the support plate 8;
the spiral column 7 is abutted with the vibration isolation element 3 through a bearing plate 8;
Preferably, a blind hole is formed on the upper surface of the bearing plate 8, the bottom of the spiral column 7 is embedded into the blind hole, and the spiral column 7 can rotate relative to the bearing plate 8 in the blind hole.
When the spiral column 7 is screwed by external force, the spiral column 7 can extend downwards relative to the prefabricated plate body 1, and further downwards press the vibration isolation element; because the bottom of spiral post 7 is embedded into in the blind hole, under the effect of vertical direction pressure, spiral post 7 and bearing board 8 can not separate each other, just spiral post 7 can play spacing effect, prevents that bearing board 8 from moving in the horizontal direction, works as when corresponding on bearing board 8 has a plurality of spiral posts 7, can also prevent that bearing board 8 from rotating in the horizontal direction.
Example 2: as shown in fig. 7, a support plate 8 is provided at the bottom of the screw column 7,
the spiral column 7 is fixedly connected with the bearing plate 8 into a whole,
the spiral column 7 is abutted with the vibration isolation element 3 through a bearing plate 8;
Preferably, the screw column 7 comprises an upper thread section 71 and a lower polish rod section 72 which are coaxial and can rotate relatively, the upper thread section 71 is matched with the internal thread sleeve 6, and the bottom of the lower polish rod section 72 is fixedly connected with the bearing plate 8 into a whole. And the guide limit structure is arranged around the lower polish rod section 72, so that the lower polish rod section 72 can only move back and forth along the vertical direction, and because the upper thread section 71 and the lower polish rod section 72 are coaxial and abutted, when the upper thread section 71 is rotated, the upper thread section 71 downwardly presses the lower polish rod section 72 and transmits pressure to the vibration isolation element and the base, but because the upper thread section 71 and the lower polish rod section 72 are not of an integral structure, the vertical pressure is mainly transmitted to the vibration isolation element by the lower polish rod section 72, the tangential torsional force is small, the vibration isolation element is basically not caused to rotate, and the risk of further damage of the vibration isolation element is reduced.
Preferably, as shown in fig. 8 and 9, a transmission member 9 is arranged between the upper threaded section 71 and the lower polish rod section 72, the transmission member 9 comprises a spherical ball 91, and a limit frame 92 is preferably arranged outside the spherical ball to limit the spherical ball 91 to roll only between the upper threaded section 71 and the lower polish rod section 72; the pressure of the upper thread section 71 in the vertical direction is transmitted to the lower polish rod section 72 through the transmission member 9, and the tangential direction force applied to the lower polish rod section 72 is further reduced, so that the lower polish rod section 72 only reciprocates in the vertical direction. Preferably, there is at least one of the spherical balls 91, and when there are a plurality of the spherical balls 91, the respective spherical balls 91 are identical to each other.
the present invention also provides a construction method of a trapezoidal prefabricated slab with auxiliary blocks, as shown in fig. 1, the method comprising the steps of:
Step 1: a steel bar cage for pouring the base 4 is built on the structural bottom plate;
Step 2: assembling the precast slab body 1 and the steel rail into a rail panel, placing the auxiliary block 2 at the bottom of the rail panel, and enabling the auxiliary block 2, the vibration isolation element 3 and the precast slab body 1 to be attached to each other;
and step 3: suspending the track panel above the reinforcement cage and adjusting the position of the track panel; the track panel is positioned at the position and height required by engineering through adjustment;
and 4, step 4: pouring concrete into the steel bar cage to form a base 4, so that the height of the top surface of the base 4 is not higher than that of the top surface of the auxiliary block 2, and the height difference between the top surface of the auxiliary block 2 and the top surface of the base 4 is not less than 15mm, more preferably 15-20 mm; the space between the cast-in-place concrete base and the bottom of the precast slab is greatly increased compared with the traditional scheme, firstly, an isolating material and a wrapping sleeve in the traditional construction scheme can be omitted, secondly, the precast slab can be prevented from being adhered to the cast-in-place concrete base, secondly, the space is increased, and then, the concrete is greatly convenient to vibrate and plaster, so that a gap (empty hanging) between a damping pad and a concrete foundation is avoided, and finally, the base can be prevented from propping against an isolation element or even the precast slab due to the irregular binding of steel bars.
preferably, in step 2, the internally threaded sleeve 6 and the screw column 7 are both located inside the prefabricated panel body 1; assembled in the track panel together with the internally threaded sleeve 6 and the helical column 7;
preferably, the transverse anchoring ribs 51 protruding from the auxiliary blocks 2 are fixed integrally with the prefabricated panel body 1 by strapping bands and clamp the vibration insulating elements 3;
more preferably, the exposed strapping band is removed after construction is completed. According to the construction method of the trapezoidal prefabricated slab with the auxiliary blocks, provided by the invention, the isolation material and the wrapping sleeve in the traditional construction scheme can be omitted, the construction speed is high, the construction procedures are few, the auxiliary materials are few, and the height of the surface of the construction road is also convenient to control.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", and the like indicate orientations or positional relationships based on operational states of the present invention, and are only used for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.
The present invention has been described above in connection with preferred embodiments, but these embodiments are merely exemplary and merely illustrative. On the basis of the above, the invention can be subjected to various substitutions and modifications, and the substitutions and the modifications are all within the protection scope of the invention.
Claims (11)
1. The trapezoid precast slab with the auxiliary blocks is characterized by comprising a precast slab body (1), wherein the auxiliary blocks (2) are arranged at the bottom of the precast slab body (1);
A vibration isolation element (3) is arranged between the precast slab body (1) and the auxiliary block (2),
the auxiliary block (2) is placed on the base (4),
an anchoring rib (5) is arranged on the auxiliary block (2), and the anchoring rib (5) penetrates out of the auxiliary block (2) and extends into the base (4); the auxiliary block (2), the anchoring ribs (5) and the base (4) are poured and fixedly combined into a whole;
The auxiliary block (2) is in a strip shape, and the section of the auxiliary block is rectangular;
A plurality of auxiliary blocks (2) are uniformly distributed below each prefabricated plate body (1), and a vibration isolation element (3) is arranged between each auxiliary block (2) and each prefabricated plate body (1);
an internal thread sleeve (6) is embedded in the precast slab body (1), and a spiral column (7) penetrating through the precast slab body (1) is arranged in the internal thread sleeve (6);
The bottom end of the spiral column (7) is abutted against the vibration isolation element (3), and the spiral column (7) is used for downwards pressing the vibration isolation element (3) or upwards jacking the prefabricated plate body (1).
2. the prefabricated panel of claim 1,
The top surface height of the auxiliary block (2) is higher than that of the base (4).
3. The prefabricated panel of claim 2,
the height difference between the top surface of the auxiliary block (2) and the top surface of the base (4) is not less than 15 mm.
4. The prefabricated panel of claim 1,
a bearing plate (8) is arranged at the bottom of the spiral column (7),
The vibration isolation element (3) is fixedly connected with the bearing plate (8) into a whole;
The spiral column (7) is abutted with the vibration isolation element (3) through a bearing plate (8).
5. The prefabricated panel of claim 4,
the upper surface of the bearing plate (8) is provided with a blind hole, the bottom of the spiral column (7) is embedded into the blind hole, and the spiral column (7) can rotate relative to the bearing plate (8) in the blind hole.
6. The prefabricated panel of claim 1,
A bearing plate (8) is arranged at the bottom of the spiral column (7),
The spiral column (7) is fixedly connected with the bearing plate (8) into a whole,
The spiral column (7) is abutted with the vibration isolation element (3) through a bearing plate (8).
7. the prefabricated panel of claim 1,
The spiral column (7) comprises an upper thread section (71) and a lower polished rod section (72) which are coaxial and can rotate relatively, the upper thread section (71) is matched with the internal thread sleeve (6), and the bottom of the lower polished rod section (72) is fixedly connected with the bearing plate (8) into a whole.
8. A method of constructing a prefabricated trapezoidal slab with auxiliary blocks, wherein said slab is the slab of any one of claims 1 to 7, comprising the steps of:
Step 1: a steel bar cage for pouring the base (4) is built on the structural bottom plate;
step 2: assembling the precast slab body (1) and the steel rail into a rail panel, placing an auxiliary block (2) at the bottom of the rail panel, and enabling the auxiliary block (2), the vibration isolation element (3) and the precast slab body (1) to be attached to each other;
and step 3: suspending the track panel above the reinforcement cage and adjusting the position of the track panel;
and 4, step 4: pouring concrete into the steel bar cage to form the base (4), so that the height of the top surface of the base (4) is not higher than that of the top surface of the auxiliary block (2), and the height difference between the top surface of the auxiliary block (2) and the top surface of the base (4) is not less than 15 mm.
9. The construction method according to claim 8,
In the step 2, the internal thread sleeve (6) and the spiral column (7) are both positioned inside the precast slab body (1).
10. The construction method according to claim 8,
The transverse anchoring ribs (51) extending from the auxiliary blocks (2) are fixed with the prefabricated plate body (1) into a whole through packing belts, and clamp the vibration isolation elements (3).
11. The construction method according to claim 8,
And removing the exposed packing belt after the construction is finished.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810937020.XA CN109778596B (en) | 2018-08-16 | 2018-08-16 | trapezoidal prefabricated slab with auxiliary blocks and construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810937020.XA CN109778596B (en) | 2018-08-16 | 2018-08-16 | trapezoidal prefabricated slab with auxiliary blocks and construction method thereof |
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| CN109778596A CN109778596A (en) | 2019-05-21 |
| CN109778596B true CN109778596B (en) | 2019-12-10 |
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| US9157192B2 (en) * | 2010-12-27 | 2015-10-13 | Sonneville Ag | Method for producing a slab trackway |
| CN208981019U (en) * | 2018-08-16 | 2019-06-14 | 广州地铁设计研究院股份有限公司 | Ladder type prefabricated plate with auxiliary block |
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2018
- 2018-08-16 CN CN201810937020.XA patent/CN109778596B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5653388A (en) * | 1995-03-08 | 1997-08-05 | Pfleiderer Verkehrstechnik Gmbh & Co. Kg | Method and apparatus for constructing a permanent railroad track |
| US9157192B2 (en) * | 2010-12-27 | 2015-10-13 | Sonneville Ag | Method for producing a slab trackway |
| CN202099699U (en) * | 2011-03-04 | 2012-01-04 | 北京市劳动保护科学研究所 | Elastic supporting vibration isolation component ballast bed |
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| CN109778596A (en) | 2019-05-21 |
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