CN108385898B - Mounting method for large-diameter steel pipe column prestressed corrugated pipe - Google Patents
Mounting method for large-diameter steel pipe column prestressed corrugated pipe Download PDFInfo
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- CN108385898B CN108385898B CN201810135296.6A CN201810135296A CN108385898B CN 108385898 B CN108385898 B CN 108385898B CN 201810135296 A CN201810135296 A CN 201810135296A CN 108385898 B CN108385898 B CN 108385898B
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/30—Columns; Pillars; Struts
- E04C3/32—Columns; Pillars; Struts of metal
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
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Abstract
The utility model provides a be used for major diameter steel-pipe column prestressing force corrugated pipe protection device and installation method thereof, wherein protection device includes circular steel tube, steel casing pipe and clamp, two the circular steel tube is installed at the steel-pipe column inboard along steel-pipe column central symmetry and is constituted a set of circular steel tube group, and multiunit circular steel tube group is laid along steel-pipe column axial, and every group the circular steel tube looks remote site is equipped with the opening of being connected with steel casing pipe and take the internal thread in the opening, steel casing pipe internal diameter is greater than prestressing force corrugated pipe, the both sides of steel casing pipe are equipped with a plurality of holes of guaranteeing that the concrete can freely flow in the steel casing pipe along the axial, steel casing pipe includes left steel casing pipe and right steel casing pipe, the distal end of left side steel casing pipe and right steel casing pipe is adorned on two circular steel pipes that a set of circular steel pipe leased respectively soon, and the. The invention can be suitable for all constructional engineering for installing the prestressed corrugated pipe in the steel pipe column, and is particularly suitable for constructional engineering for installing the prestressed corrugated pipe in the large-diameter steel pipe column.
Description
Technical Field
The invention relates to the field of perforation construction of steel pipe columns and lattice type steel pipe column prestressed corrugated pipes, in particular to an installation method for a large-diameter steel pipe column prestressed corrugated pipe.
Background
With the rapid development of social economy, the industries of buildings, bridges and highways are correspondingly and rapidly developed, so that a new structural system, namely a steel tube concrete column prestressed beam and frame combined structural system is developed to meet the requirements of high-rise, super-high-rise, large-span and large-space buildings.
The technical background of the application of the prestressed frame beam of the steel pipe concrete column is that the compressive strength of concrete is high, the bending resistance is weak, and steel, particularly profile steel, has strong bending resistance and good elastoplasticity, but is easy to destabilize when being pressed and lose the axial compressive capacity. The steel pipe concrete can combine the advantages of the steel pipe concrete and the concrete in the structure, so that the concrete is in a lateral compression state, and the compression strength of the concrete can be improved by times. Meanwhile, due to the existence of the concrete, the rigidity of the steel pipe is improved, and the concrete and the steel pipe play a role together, so that the bearing capacity is greatly improved. And the steel pipe concrete column can be well combined with the steel beam and the reinforced concrete beam. After prestress is applied to the frame beam, the node rigidity is high, the shearing resistance is high, the anti-seismic performance is excellent, and the bearing capacity is high, so that the requirements of large-span and large-space buildings on a structural system are met.
Because the prestress design requirement of the frame beam is generally full-length tension, the prestress corrugated pipe in the frame beam needs to penetrate through the concrete-filled steel tubular column. However, in the current construction process for perforating the prestressed corrugated pipe in the steel pipe column, the prestressed corrugated pipe is firstly set out, then the steel pipe column is perforated, and then the prestressed corrugated pipe is perforated. This has several disadvantages:
1. for the prestressed corrugated pipe punched in the large-diameter steel pipe column, the prestressed corrugated pipe is easy to deflect downwards, and the beam shape of the prestressed tendon cannot be ensured.
2. In the process of steel structure welding construction, the prestressed corrugated pipe is easily damaged by steel structure welding slag.
3. When the concrete is vibrated, the vibrating rod is easy to directly contact the corrugated pipe, so that the corrugated pipe is damaged.
Disclosure of Invention
The invention overcomes the defects of the prior art and provides the installation method which has simple process, can be assembled and disassembled on site, has strong environmental adaptability, is convenient and easy to operate, has good corrugated pipe quality and small pipe penetration resistance and is suitable for the large-diameter steel pipe column prestressed corrugated pipe.
In order to solve the defects of the traditional large-diameter steel pipe column prestressed corrugated pipe perforation, the installation method for the large-diameter steel pipe column prestressed corrugated pipe comprises a large-diameter steel pipe column prestressed corrugated pipe protection device, the large-diameter steel pipe column prestressed corrugated pipe protection device comprises round steel pipes, steel sleeves and a clamp, the two round steel pipes are symmetrically installed on the inner side of a steel pipe column along the center of the steel pipe column to form a group of round steel pipe groups, the plurality of round steel pipe groups are arranged along the axial direction of the steel pipe column, the opposite end of each group of round steel pipes is provided with an opening connected with the steel sleeves, the inner diameter of each steel sleeve is larger than that of the prestressed corrugated pipe, the two sides of each steel sleeve are provided with a plurality of holes which ensure that concrete can freely flow into the steel sleeves along the axial direction, each steel sleeve comprises a left steel sleeve and a right steel sleeve, the far ends of the left steel sleeve and the right steel sleeve are respectively screwed on the two round steel pipes of the group of round steel, the near ends of the left steel sleeve and the right steel sleeve are fixedly connected through a clamp.
The specific installation steps are as follows:
a. lofting the opening position of the prestressed corrugated pipe on the steel pipe column;
b. opening holes in the steel pipe column;
c. welding a plurality of groups of round steel pipe groups in pairs in the steel pipe column, so that each two round steel pipes are symmetrically arranged in the steel pipe column along the center of the steel pipe column;
d. and screwing a left steel sleeve on the left round steel pipe, installing the prestressed corrugated pipe in the steel pipe column, sleeving a right steel sleeve on the prestressed corrugated pipe, screwing a right steel sleeve on the right round steel pipe, and finally connecting and fixing the two steel sleeves through a clamp.
The diameter of the steel sleeve is 15-25mm larger than that of the prestressed corrugated pipe.
The wall thickness of the steel sleeve is 5-8 mm.
Two rows of holes are axially arranged on each side of the steel sleeve, the two rows of holes are symmetrically arranged or staggered in a quincunx shape, and the diameter of each hole is matched with the particle level of the self-compacting concrete of the steel pipe column.
The center distance between the transversely adjacent holes is 150mm-180mm, and the center distance between the vertically adjacent holes is 100mm-120 mm.
The invention has the beneficial effects that: the prestressed corrugated pipe can be effectively prevented from downwarping in the large-diameter steel pipe column, the prestressed tendon is guaranteed to be bundled, the prestressed corrugated pipe can be protected from being damaged by external factors such as steel structure welding slag and concrete vibration, the concrete can be guaranteed to freely flow into the space filled with the outer wall of the prestressed corrugated pipe and the inner wall of the special steel sleeve pipe by opening the holes in the surface of the device, and the prestressed corrugated pipe and the concrete in the steel pipe column are guaranteed to be effectively filled. And the special steel sleeve protection device can be directly installed and disassembled on site, wherein the connection mode of the two special round steel sleeves can be diversified, the flexibility is strong, and the application range is wide.
Drawings
Fig. 1 is a perspective view of the present invention connected to a steel pipe column.
Fig. 2 is a top view of fig. 1.
Fig. 3 is a schematic structural diagram of the present invention.
Fig. 4 is an exploded schematic view of fig. 3.
FIG. 5 is a schematic diagram of the arrangement of holes in a steel casing according to the present invention.
In the drawings: 1. steel pipe columns; 2. round steel pipes; 3. steel casing; 4. clamping a hoop; 5. and (4) holes.
Detailed Description
The invention is further explained in detail below with reference to the drawings and examples
Example 1
The installation process of the special steel casing protection device provided by the embodiment 1 of the invention comprises the following steps:
1. according to a node big sample diagram in an engineering prestress deepening design drawing, lofting of the opening position of a prestress corrugated pipe on the steel pipe column 1 is carried out;
2. opening a hole in the steel pipe column 1;
3. welding the circular steel tube 2 at the position corresponding to the hole of the steel tube column 1;
4. manufacturing and tapping a special steel sleeve 3;
5. installing a special steel sleeve 3;
see fig. 1, 2, 3, 4.
The special steel sleeve protection device provided by the embodiment 1 of the invention comprises 2 special steel sleeves 3 with screw threads and holes on one end surfaces, a hoop 4 and a round steel pipe 2 with screw threads on the inner pipe wall and welded with a steel pipe column. The inner diameter of the steel pipe column is 1.6 m. Wherein, the outer diameter of the special steel sleeve 3 is 130mm, the wall thickness is 5mm, and the length is 1.38 m. The number of rows of holes on the surface of the steel sleeve 3 is 2, the holes are staggered in a quincunx manner, the diameter of each hole 5 is 30mm, the horizontal distance between the centers of the holes 5 is 150mm, and the vertical distance is 100 mm. The size of the clamp plate 4 is determined according to the diameter of the special steel sleeve, so that the special steel sleeve is optimally tightly buckled. The circular steel pipe 2 is welded with a small section on site and then is connected with a special steel sleeve with an external screw thread at one end, the wall thickness is 5mm, the external diameter is 130mm, the length is 110mm, and the external diameter and the internal diameter are matched with the special steel sleeve.
The installation sequence is that firstly, a special steel sleeve 3 is held up to enable one end with an external screw thread to face a round steel pipe 2 which is provided with an internal screw thread and welded with the steel pipe column, then the external screw thread is slowly screwed down along with the internal screw thread until the external screw thread is exposed within 2 screw threads, and then the installation of another special steel sleeve 3 is carried out, and the installation method is similar. After the 2 special steel casings are installed and the number of the exposed screw threads is checked to be qualified, the 2 special steel casings with one ends suspended temporarily are clamped by the clamp sheet 4, and finally the special steel casings are locked by the locking bolt.
Example 2
The installation process of the special steel casing protection device provided by the embodiment 2 of the invention comprises the following steps:
1. according to a node big sample diagram in an engineering prestress deepening design drawing, lofting of the opening position of a prestress corrugated pipe on the steel pipe column 1 is carried out;
2. opening a hole in the steel pipe column 1;
3. welding the circular steel tube 2 at the position corresponding to the hole of the steel tube column 1;
4. manufacturing and tapping a special steel sleeve 3;
5. installing a special steel sleeve 3;
see fig. 5.
The special steel sleeve protection device provided by the embodiment 1 of the invention comprises 2 special steel sleeves 3 with screw threads and holes on one end surfaces, a hoop 4 and a round steel pipe 2 with screw threads on the inner pipe wall and welded with a steel pipe column. The inner diameter of the steel pipe column is 2 m. Wherein, the outer diameter of the special steel sleeve 3 is 140mm, the wall thickness is 8mm, and the length is about 1.7 m. The number of rows of holes on the surface of the steel sleeve 3 is 2, the holes are symmetrically arranged, the diameter of each hole 5 is 30mm, the horizontal distance between the centers of the holes 5 is 180mm, and the vertical distance is 120 mm. The size of the clamp plate 4 is determined according to the diameter of the special steel sleeve, so that the special steel sleeve is optimally tightly buckled. The circular steel pipe 2 is welded with a small section on site and then is connected with a special steel sleeve with an external screw thread at one end, the wall thickness is 8mm, the length is 150mm, and the external diameter and the internal diameter are matched with the special steel sleeve.
The installation sequence is that firstly, a special steel sleeve 3 is held up to enable one end with an external screw thread to face a round steel pipe 2 which is provided with an internal screw thread and welded with the steel pipe column, then the external screw thread is slowly screwed down along with the internal screw thread until the external screw thread is exposed within 2 screw threads, and then the installation of another special steel sleeve 3 is carried out, and the installation method is similar. After the 2 special steel casings are installed and the number of the exposed screw threads is checked to be qualified, the 2 special steel casings with one ends suspended temporarily are clamped by the clamp sheet 4, and finally the special steel casings are locked by the locking bolt.
Claims (5)
1. A mounting method for a large-diameter steel pipe column prestressed corrugated pipe is characterized by comprising the following steps: the large-diameter steel pipe column prestressed corrugated pipe protection device comprises a round steel pipe, a steel sleeve and a clamp, wherein the round steel pipe is symmetrically arranged on the inner side of the steel pipe column along the center of the steel pipe column to form a group of round steel pipe groups, the plurality of the round steel pipe groups are arranged along the axial direction of the steel pipe column, the opposite end of each round steel pipe is provided with an opening connected with the steel sleeve, the inner thread of the opening is arranged in the opening, the inner diameter of the steel sleeve is larger than that of the prestressed corrugated pipe, a plurality of holes for ensuring that concrete can freely flow into the steel sleeve are arranged on the two sides of the steel sleeve along the axial direction, the steel sleeve comprises a left steel sleeve and a right steel sleeve,
the specific installation steps are as follows:
a. lofting the opening position of the prestressed corrugated pipe on the steel pipe column;
b. opening holes in the steel pipe column;
c. welding a plurality of groups of round steel pipe groups in pairs in the steel pipe column, so that each two round steel pipes are symmetrically arranged in the steel pipe column along the center of the steel pipe column;
d. and screwing a left steel sleeve on the left round steel pipe, installing the prestressed corrugated pipe in the steel pipe column, sleeving a right steel sleeve on the prestressed corrugated pipe, screwing a right steel sleeve on the right round steel pipe, and finally connecting and fixing the two steel sleeves through a clamp.
2. The installation method for the large-diameter steel pipe column prestressed corrugated pipe according to claim 1, characterized in that: the diameter of the steel sleeve is 15-25mm larger than that of the prestressed corrugated pipe.
3. The installation method for the large-diameter steel pipe column prestressed corrugated pipe according to claim 2, characterized in that: the wall thickness of the steel sleeve is 5-8 mm.
4. The installation method for a large-diameter steel pipe column prestressed corrugated pipe according to one of claims 1 to 3, wherein: two rows of holes are axially arranged on each side of the steel sleeve, the two rows of holes are symmetrically arranged or staggered in a quincunx shape, and the diameter of each hole is matched with the particle level of the self-compacting concrete of the steel pipe column.
5. The installation method for the large-diameter steel pipe column prestressed corrugated pipe according to claim 4, characterized in that: the center distance between the transversely adjacent holes is 150mm-180mm, and the center distance between the vertically adjacent holes is 100mm-120 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810135296.6A CN108385898B (en) | 2018-02-09 | 2018-02-09 | Mounting method for large-diameter steel pipe column prestressed corrugated pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810135296.6A CN108385898B (en) | 2018-02-09 | 2018-02-09 | Mounting method for large-diameter steel pipe column prestressed corrugated pipe |
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| Publication Number | Publication Date |
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| CN108385898A CN108385898A (en) | 2018-08-10 |
| CN108385898B true CN108385898B (en) | 2021-03-12 |
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Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7509778B2 (en) * | 2000-12-03 | 2009-03-31 | Simpson Strong-Tie Company, Inc. | Automatic take-up device with internal spring |
| CN206320433U (en) * | 2016-12-12 | 2017-07-11 | 东莞市卓宇五金科技有限公司 | A kind of connector of steel tube |
| CN206438625U (en) * | 2016-12-29 | 2017-08-25 | 浙江久鼎机械有限公司 | A kind of riveted steel pipe |
| CN107401648A (en) * | 2017-07-21 | 2017-11-28 | 江苏易元新材料科技有限公司 | A kind of easy-to-maintain threeway |
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