CN217974018U - Large-section diaphragm plate of ultrahigh hollow thin-wall pier - Google Patents
Large-section diaphragm plate of ultrahigh hollow thin-wall pier Download PDFInfo
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- CN217974018U CN217974018U CN202220796087.8U CN202220796087U CN217974018U CN 217974018 U CN217974018 U CN 217974018U CN 202220796087 U CN202220796087 U CN 202220796087U CN 217974018 U CN217974018 U CN 217974018U
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Abstract
A transverse partition plate with a large section of an ultrahigh hollow thin-wall pier is of a flat plate structure and is arranged at an inner chamfer of a poured part of a hollow thin-wall pier, and the transverse partition plate of the flat plate structure is divided into a prefabricated transverse partition beam and a transverse partition plate cast-in-place part which are distributed at intervals; reserved steel bars are arranged on the periphery of the prefabricated transverse partition beam, and a hoisting ring is arranged at the top of the prefabricated transverse partition beam; sequentially mounting prefabricated diaphragm beams on inner chamfers of poured parts of the hollow thin-wall piers, and reserving the width of a diaphragm cast-in-place part in the middle; the transverse reserved steel bars of the adjacent diaphragm beams are connected by adopting connecting steel bars, and then a transverse diaphragm cast-in-place part pouring space is formed by the anchoring beams arranged at the tops of the diaphragm beams, the anchoring bolts, the pull rods and the bottom templates buckled at the bottoms of the two adjacent diaphragm beams; and pouring the cast-in-place concrete of the diaphragm plate to form a complete diaphragm plate with a large cross section. The diaphragm plate has the advantages that the hoisting weight of the diaphragm plate monomer relative to the whole diaphragm plate is small, and a bracket or other supporting systems do not need to be additionally erected, so that the construction cost is reduced.
Description
The technical field is as follows:
the utility model belongs to the technical field of the building engineering concrete construction, in particular to highway, the hollow thin wall mound construction technical field of railway bridge especially relate to the hollow thin wall mound large section diaphragm construction technique of superelevation.
Background art:
with the rapid development of high speed and high speed rail in China, the level of bridge construction is gradually improved. In the design of mountain area bridge, often can have the appearance of superelevation mound, in hollow thin wall mound of superelevation, often can set up the cross slab to the wholeness of reinforcing pier stud, stability prevent pier stud unstability. Different from prefabricated T-beam and box beam diaphragm plates, the ultrahigh hollow thin-wall pier diaphragm plate is usually thicker in thickness, larger in overall size and extremely high in construction difficulty. The conventional pier column diaphragm plate construction generally adopts integral prefabricated hoisting, or a floor scaffold is erected in a hollow pier to serve as a bearing system, or an aerial support platform is erected by adopting materials such as embedded brackets, section steel and the like to serve as a support system, and then the construction is carried out in an integral cast-in-place mode. Along with the increase of bridge structure size, the conventional mode has the problem that the auxiliary measure engineering volume is big, the later stage is dismantled difficultly, the mound space is narrow and small, the safety risk is big, the construction cycle is long. Therefore, a safe, reliable and economic ultrahigh hollow thin-wall pier diaphragm plate is needed at present.
The utility model has the following contents:
the utility model aims to solve the technical problem that a hollow thin wall mound large section cross slab of superelevation of safe and reliable, economic efficiency is provided.
In order to solve the above problem, the utility model adopts the following technical scheme:
the utility model provides a large-section diaphragm plate of an ultrahigh hollow thin-wall pier, which is of a flat plate structure and is arranged at the inner chamfer of a poured pier column of the hollow thin-wall pier, the diaphragm plate of the flat plate structure is divided into a prefabricated diaphragm beam and a diaphragm cast-in-place part which are distributed at intervals, the diaphragm beam is prefabricated on a ground jump lattice, reserved steel bars are arranged around the diaphragm beam, and a hoisting ring is arranged at the top of the diaphragm beam; sequentially mounting prefabricated diaphragm beams on the inner chamfer of the poured part of the hollow thin-wall pier, and reserving the width of the cast-in-place part of the diaphragm plate in the middle; the transverse reserved steel bars of adjacent diaphragm beams are connected by connecting steel bars, then a diaphragm cast-in-place part pouring space is formed by the anchoring beams arranged at the tops of the diaphragm beams, the steel base plates arranged at the tops of the anchoring beams, the anchoring bolts, the pull rods and the bottom templates buckled at the bottoms of the two adjacent prefabricated diaphragm beams, and concrete of the diaphragm cast-in-place part is poured to form a complete diaphragm of the ultrahigh hollow thin-wall pier with a large section.
The transverse partition beam is a prefabricated part and has a strip-shaped concrete structure; the prefabricated transverse partition beams and the cast-in-place part of the transverse partition plate are uniformly distributed at intervals; the cast-in-place part of the diaphragm is of a strip structure, a certain width is reserved between adjacent diaphragm beams, and finally pouring is carried out.
The bottom template is made of a steel plate with the diameter delta =10 mm.
The hoisting ring arranged on the diaphragm beam is made of HPB300 smooth round steel bars with phi =16 mm.
The diaphragm beam is provided with a plurality of transverse and longitudinal reserved steel bars which are arranged at equal intervals and symmetrically, two layers of reserved steel bars are arranged up and down, and the reserved steel bars on the periphery of the diaphragm beam are reserved with enough welding length.
The anchoring beam is made of double limbs (100 channel steel).
The pull rod is made of finish rolling deformed steel bar with phi =28 mm.
The steel backing plate is made of steel plates with the diameter delta =10 mm.
The anchor bolt is a fastening bolt matched with finish-rolled deformed steel bars.
The pull rod is sleeved with a sleeve, and the sleeve is made of a PVC pipe.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. the utility model discloses a with the diaphragm split of slab structure in the original design for the strip structure, jump the prefabricated diaphragm roof beam of check, hoist the diaphragm roof beam one by one and take one's place to utilize it as braced system, adopt the mode of hanging the mould method post-cast construction joint to solve the construction difficult problem of the big section diaphragm of hollow thin wall mound of superelevation, satisfy the construction requirement.
2. Adopt the utility model discloses carry out the diaphragm construction, greatly reduced monomer hoist and mount weight, reduced hoisting equipment's hoist and mount ability requirement, improved the security when having practiced thrift construction cost.
3. The utility model discloses need not to set up support or other support systems in addition, reduced the auxiliary measure engineering volume, reduced construction cost, practiced thrift construction period.
Description of the drawings:
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the diaphragm plate of the present invention;
FIG. 3 is a cross-sectional view of the prefabricated diaphragm beam of the present invention;
FIG. 4 is a construction cross-sectional view of the cast-in-place part of the diaphragm of the present invention;
figure 5 is the construction plan view of the cast-in-place part of the diaphragm plate of the utility model.
Reference numbers in the figures:
the method comprises the following steps of 1-diaphragm plate, 2-hollow thin-wall pier poured part, 3-hollow thin-wall pier unwatered part, 4-hoisting ring, 5-diaphragm beam, 6-diaphragm plate cast-in-place part, 7-bottom template, 8-reserved steel bar, 9-anchoring beam, 10-pull rod, 11-steel base plate, 12-anchoring bolt, 13-sleeve and 14-connecting steel bar.
The specific implementation mode is as follows:
the following description is further provided for the purpose of illustration, and the detailed description is for the purpose of illustration of the principles of the present invention, and is not intended to limit the scope of the present invention, and the present invention is not limited to the same or similar techniques.
Referring to fig. 1-5, the utility model provides a hollow thin wall mound large section cross slab of superelevation, this large section cross slab 1 is dull and stereotyped structure, sets up in the interior chamfer department of the pier stud of hollow thin wall mound part 2 that has watered, is strip structure with 1 split of cross slab 1 of dull and stereotyped structure, divide into prefabricated diaphragm beam 5 and the cast-in-place part of diaphragm 6, the two evenly spaced distribution. The transverse partition beam 5 is a prefabricated part and is of a strip-shaped concrete structure, the transverse partition beam 5 is prefabricated on a ground lattice jump, a hoisting ring 4 is arranged at the top of the transverse partition beam 5, and the hoisting ring 4 is made of HPB300 plain steel bars with phi =16 mm; the diaphragm 5 is provided with a plurality of horizontal, fore-and-aft reserved reinforcing bars 8 all around, and the even interval of reserved reinforcing bar 8, symmetry set up, are provided with two-layerly from top to bottom, and sufficient welded length is all reserved to diaphragm 5 reserved reinforcing bar 8 all around to satisfy overlap joint welding length, reserved reinforcing bar 8 is pier stud diaphragm horizontal reinforcement in the former design. The diaphragm cast-in-place part 6 is of a strip structure, is a certain width reserved between the adjacent diaphragm beams 5, and is poured finally. And (3) sequentially mounting the prefabricated diaphragm beams 5 on the inner chamfer of the cast part 2 of the hollow thin-wall pier, and reserving the width of the diaphragm cast-in-situ part 6 in the middle. The transverse reserved steel bars 8 of the adjacent diaphragm beams 5 are connected by adopting connecting steel bars 14, then a diaphragm cast-in-place part 6 casting space is formed by the anchoring beams 9 arranged at the tops of the diaphragm beams 5, the steel backing plates 11 at the tops of the anchoring beams 9, the anchoring bolts 12, the pull rods 10 and the bottom formworks 7 buckled at the bottoms of the two adjacent prefabricated diaphragm beams 5, and concrete is cast in the diaphragm cast-in-place part 6 to form a complete diaphragm 1 with a large section of the ultrahigh hollow thin-wall pier. The pull rod 10 is made of finish-rolled deformed steel bar with phi =28mm, the bottom template 7 is made of steel plate with delta =10mm, the anchor bolt 12 is a fastening bolt matched with the finish-rolled deformed steel bar, the anchor beam 9 is made of double-limb [ 100U steel, and the steel backing plate 11 is made of steel plate with delta =10 mm.
The construction steps of the large-section diaphragm plate of the ultrahigh hollow thin-wall pier are as follows:
1) The pier stud of the cast part 2 of the hollow thin-wall pier is constructed to the bottom surface of the diaphragm plate 1, and an inner chamfer angle is arranged (see figure 1).
2) The diaphragm plate 1 of the flat plate structure is split into a strip-shaped prefabricated diaphragm beam 5 and a diaphragm cast-in-place part 6, and the diaphragm beam 5 is prefabricated and molded on the ground.
3) After the transverse partition beam 5 is prefabricated, when the strength and the elastic modulus of the concrete exceed 85% of the designed strength and elastic modulus, the prefabricated transverse partition beam 5 is hoisted and placed on the corresponding position of the inner chamfer of the cast part 2 of the hollow thin-wall pier through hoisting equipment such as a tower crane and the like (see figure 2).
4) After the diaphragm beams 5 are installed, the pull rod 10 penetrates through the bottom formwork 7 and is screwed down by the anchor bolt 12, and the whole diaphragm cast-in-place part 6 penetrates through the diaphragm plates in an inclined mode and is buckled at the bottoms of the two adjacent diaphragm beams 5. A sleeve 13 is sleeved on the pull rod 10, and the sleeve 13 is made of PVC pipe. The anchoring beam 9 is placed on the top of the diaphragm beam 5 and clamps the pull rod 10, the top is anchored by a steel backing plate 11, and then an anchoring bolt 12 on the top is tightened (see figure 4).
5) The transverse reserved steel bars 8 of the adjacent diaphragm beams 5 are connected by adopting the connecting steel bars 14, and the concrete of the cast-in-place part 6 of the diaphragm is poured to form the diaphragm 1 with a complete ultrahigh hollow thin-wall pier large section.
6) And (4) removing the pull rod 10 and the anchoring beam 9, and continuously pouring the next section of hollow thin-wall pier uncrossed part 3.
Claims (4)
1. The utility model provides a hollow thin wall mound large cross section cross slab of superelevation, characterized by: this big sectional diaphragm (1) is the plate structure, sets up the interior chamfer department at the pier stud that hollow thin wall mound has watered part (2), and diaphragm (1) of plate structure divide into prefabricated stull roof beam (5) and the cast-in-place part of diaphragm (6), and the two interval distribution, stull roof beam (5) are provided with around and reserve reinforcing bar (8), the top sets up hoisting ring (4), and adjacent stull roof beam (5) transversely reserve reinforcing bar (8) and are connected through connecting reinforcement (14).
2. The ultrahigh hollow thin-wall pier large-section diaphragm plate as claimed in claim 1, which is characterized in that: the transverse partition beam (5) is a prefabricated part and has a strip-shaped concrete structure; the prefabricated transverse partition beams (5) and the transverse partition plate cast-in-place parts (6) are uniformly distributed at intervals; the cast-in-place part (6) of the diaphragm is of a strip structure, and a certain width is reserved between the adjacent diaphragm beams (5).
3. The large-section diaphragm plate of the ultrahigh hollow thin-wall pier as claimed in claim 1, which is characterized in that: the hoisting ring (4) arranged on the diaphragm beam (5) is made of HPB300 smooth steel bars with phi =16 mm.
4. The large-section diaphragm plate of the ultrahigh hollow thin-wall pier as claimed in claim 1, which is characterized in that: the transverse partition beam (5) is provided with a plurality of transverse and longitudinal reserved steel bars (8), the transverse partition beam is evenly spaced and symmetrically arranged, two layers of reserved steel bars (8) are arranged from top to bottom, and the reserved steel bars (8) on the periphery of the transverse partition beam (5) are reserved with enough welding length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220796087.8U CN217974018U (en) | 2022-04-02 | 2022-04-02 | Large-section diaphragm plate of ultrahigh hollow thin-wall pier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220796087.8U CN217974018U (en) | 2022-04-02 | 2022-04-02 | Large-section diaphragm plate of ultrahigh hollow thin-wall pier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217974018U true CN217974018U (en) | 2022-12-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220796087.8U Active CN217974018U (en) | 2022-04-02 | 2022-04-02 | Large-section diaphragm plate of ultrahigh hollow thin-wall pier |
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| Country | Link |
|---|---|
| CN (1) | CN217974018U (en) |
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2022
- 2022-04-02 CN CN202220796087.8U patent/CN217974018U/en active Active
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