CN117145051A - A high-altitude assembled structure and construction method of large-span space broken line truss - Google Patents

Abstract

The invention discloses a high-altitude assembly structure of a large-span space broken line truss and a construction method. The invention has the beneficial effects that: the invention is provided with the support columns, the steel truss and the jig frame, so that the jig frame can be quickly assembled and disassembled, the turnover of the jig frame is quickened, the materials, the cost and the construction period are saved, the lean construction is realized, the stability of a support system is enhanced, and the construction safety is ensured.

Description

A high-altitude assembled structure and construction method of large-span space broken line truss

Technical field

The invention relates to the technical field of steel truss construction, in particular to a large-span space broken line truss high-altitude assembly structure and a construction method.

Background technique

With the development of social economy, the demand for large halls, large stadiums, large airports, etc. is increasing. Under this demand, the design and construction technology of steel trusses are constantly improving. A large number of large steel truss buildings have been newly built in China. Steel trusses The structural forms are becoming increasingly novel, the structures are becoming more and more complex, and the structural spans are becoming larger and larger.

1. For example, a Chinese patent discloses a construction method for high-altitude in-situ assembly of large-span steel trusses (publication number: CN112796528B). First, a full hall support frame is set up under the steel truss to be assembled; then an operating platform is set up on the full hall support frame; and then Lift the steel truss segments to the operating platform in sequence, and finally assemble the steel truss segments as a whole; the operating platform includes a support unit, and the support unit is composed of several cross beams and two walkways laid on the cross beams. The beams are longitudinally perpendicular to the steel truss and all the beams are spaced apart along the longitudinal direction of the steel truss. Two walkways are removably mounted on the beams along the longitudinal direction of the steel truss with a certain distance between the two walkways, thereby forming spacing grooves on the beams for placement. The steel truss is to be assembled; before setting up the operating platform, first set adjustable U-shaped jacks on the tops of the two full-floor support poles corresponding to both ends of each beam, and place the beams in the U-shaped jacks. The operating platform used in this construction method is easy to install and disassemble, and can effectively improve work efficiency.

2. The high-altitude assembly method of long-span trusses (publication number: CN107762160A), including preparation work → truss assembly → subsequent truss installation construction steps. The high-altitude assembly method of long-span trusses can effectively solve the situation where the assembly and hoisting sites cannot meet the installation requirements. , and the construction process does not require the use of large hoisting machinery, making full use of the small tower crane on site.

Ultra-large span, complex and irregular linear trusses are increasingly used in architectural design. Large-span trusses have good load-bearing performance, high strength, can provide large spaces, save materials, and can meet various styling needs; As a result, the structural hoisting of ultra-large-span steel trusses has become a big problem. Choosing the appropriate lifting technology is particularly important for the smooth hoisting of ultra-large-span steel trusses.

Therefore, in order to solve the above technical problems, it is necessary to propose a large-span spatial broken line truss high-altitude assembled structure and construction method.

Contents of the invention

In view of the deficiencies in the above-mentioned prior art, the purpose of the present invention is to provide a large-span space folding truss high-altitude assembly structure and construction method to solve the above problems.

A high-altitude assembly structure of a large-span spatial folded truss, including a support column, a steel truss and a tire frame. The steel truss is erected between two support columns, and several tire frames are provided between the two support columns. The top of the tire frame bears against the steel truss.

Preferably, the steel truss is assembled from several truss units.

Preferably, the steel truss is formed by welding or bolting several truss units.

Preferably, the tire frame includes a base, standard sections and a support top beam, and several standard sections are connected between the support top beam and the base.

Preferably, an adjustment joint and a hydraulic jack are provided above the support top beam.

Preferably, the number of standard sections is set according to the required height of the tire frame.

A construction method for high-altitude assembled structures of large-span spatial polyline trusses. The method steps are:

S1. According to the design drawings, the truss is segmented and the steel truss is designed in depth based on factors such as tower crane hoisting capacity, construction technology, construction methods and convenient component transportation;

S2. Process the back yard steel truss components according to the steel truss detailed drawing;

S3. The steel trusses are transported to the construction site in batches;

S4. Install the tire frame;

S5. Sectional lifting and welding of steel trusses;

S6. Remove the tire frame.

Step S4 further includes the following steps:

S41. Lay out and position the line, draw the positioning line, and review the positioning;

S42, the base of the tire frame is pre-embedded;

S43, tower crane standard section hoisting, standard section and base are welded and connected, and standard section and standard section are bolted;

S44, installation of the adjustment section and welding with the standard section;

S45, welding quality inspection;

S46, tire frame positioning, verticality, and elevation review.

Step S5 further includes the following steps:

S51. The steel truss is hoisted into place;

S52. Review of steel truss elevation and location;

S53, steel truss welding;

S54. Weld appearance inspection and non-destructive testing.

During the construction process of step S5, it is necessary to monitor the deformation and displacement of the tire frame in step S4; during the construction process of step S6, it is necessary to monitor the deformation and displacement of the steel truss in step S.

Compared with the existing technology, the present invention has beneficial effects: the present invention is provided with a support column, a steel truss and a tire frame, which can realize the rapid installation and disassembly of the tire frame, speed up the turnover of the tire frame, save materials, costs and construction period, and achieve leanness construction, and enhances the stability of the support system to ensure construction safety.

Description of the drawings

Figure 1 is a structural diagram of the high-altitude assembly structure of the long-span space broken line truss of the present invention;

Figure 2 is a structural diagram of the steel truss of the present invention;

Figure 3 is a structural diagram of the truss unit of the present invention;

Figure 4 is a structural diagram of the tire frame of the present invention;

Figure 5 is a tire frame layout distribution diagram of the present invention;

Figure 6 is a flow chart of the construction method of the present invention;

Figure 7 is a further flow chart of step S4 of the present invention;

Figure 8 is a further flow chart of step S5 of the present invention.

Reference numbers in the figure: 1. Support column; 2. Steel truss; 3. Tire frame; 4. Truss unit; 301. Base; 302. Standard section; 303. Support top beam; 304. Adjustment section; 305. Hydraulic top.

Detailed ways

It should be noted that, as long as there is no conflict, the embodiments and features in the embodiments of the present invention can be combined with each other.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", " The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and The simplified description is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms “first”, “second”, etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Thus, features defined by "first," "second," etc. may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

In the description of the present invention, it should be noted that, unless otherwise clearly stated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection. Connection, or integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood through specific situations.

The embodiments of the present invention are described in detail below with reference to the accompanying drawings, but the present invention can be implemented in many different ways as defined and covered by the claims.

As shown in Figure 1 in conjunction with Figures 2 to 8, a large-span spatial broken line truss high-altitude assembled structure includes a support column 1, a steel truss 2 and a tire frame 3. The steel truss 2 is erected between the two support columns 1 Several tire frames 3 are arranged between the two support columns 1, and the tops of the tire frames 3 bear against the steel truss 2.

Furthermore, the steel truss 2 is assembled from several truss units 4 .

Furthermore, the steel truss 2 is formed by welding or bolting several truss units 4 .

Further, the tire frame 3 includes a base 301, standard sections 302 and a support top beam 303. Several standard sections 302 are connected between the support top beam 303 and the base 301.

Further, an adjustment joint 304 and a hydraulic jack 305 are provided above the support top beam 303.

Furthermore, the number of the standard sections 302 is set according to the required height of the tire frame 3 .

A construction method for high-altitude assembled structures of large-span spatial polyline trusses. The method steps are:

S1. According to the design drawings, the steel truss is segmented and the steel truss is designed in depth based on factors such as tower crane hoisting capacity, construction technology, construction methods and convenient component transportation;

S2. Process the steel truss 2 components in the back yard according to the detailed drawing of steel truss 2;

S3. Steel trusses 2 are transported to the construction site in batches;

S4. Install tire frame 3;

S5, steel truss 2-section hoisting and welding;

S6. Remove tire frame 3.

Step S4 further includes the following steps:

S41. Lay out and position the line, draw the positioning line, and review the positioning;

S42, the base 301 of the tire frame 3 is pre-embedded;

S43. Tower crane standard section 302 is hoisted, the standard section 302 is welded to the base 301, and the standard section 302 is bolted to the standard section 302;

S44, installation of adjustment section 304 and welding of standard section 302;

S45. Test the welding quality;

S46, review the positioning, verticality and elevation of tire frame 3.

Step S5 further includes the following steps:

S51, steel truss 2 is hoisted into place;

S52, steel truss 2 elevation and location review;

S53, steel truss 2 welding;

S54. Weld appearance inspection and non-destructive testing. The length of the steel truss is 61.2 meters and the weight is 53.51 tons.

During the construction process of step S5, it is necessary to monitor the deformation and displacement of the tire frame in step S4; during the construction process of step S6, it is necessary to monitor the deformation and displacement of the steel truss in step S.

Compared with the existing technology, the present invention has beneficial effects: the present invention is provided with a support column, a steel truss and a tire frame, which can realize the rapid installation and disassembly of the tire frame, speed up the turnover of the tire frame, save materials, costs and construction period, and achieve leanness construction, and enhances the stability of the support system to ensure construction safety.

Working principle: According to the design drawings, the steel truss 2 is segmented based on the tower crane hoisting capacity, construction technology, construction methods and convenient component transportation, and the steel truss 2 is designed in depth; the steel truss 2 is processed in the back field according to the deepening drawings; The steel truss 2 is transported to the construction site in batches; according to the floor plan of the tire frame 3 shown in Figure 5, the base of the tire frame 3 is set out and positioned, the positioning line is drawn, and the positioning is reviewed; the base 301 of the tire frame 3 is installed; the tower crane standard Section 302 is hoisted, the standard section 302 is welded to the base 301, and the standard section 302 is bolted to the standard section 302; the adjustment section is installed and welded to the standard section 302; the welding quality is inspected; the tire frame 3 positioning, verticality, elevation, etc. are reviewed ; After the review is correct, the steel truss 2 is hoisted into place in sequence; during the hoisting process of the steel truss 2, the deformation and displacement of the tire frame 3 are monitored in real time; after the steel truss 2 is in place, the position and elevation of the steel truss 2 are reviewed; after the review is correct, the steel truss 2 is Truss 2 welding operation; after the welding operation is completed, the weld appearance inspection and non-destructive testing are carried out; after the operation is completed, the temporary support tire frame 3 is dismantled; during the dismantling operation, the deformation and displacement of the steel truss 2 are monitored in real time.

The above are only preferred embodiments of the present invention, and do not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the description and drawings of the present invention, or directly or indirectly applied to other related The technical fields are all equally included in the scope of patent protection of the present invention.

Claims (10)

1. A structure is assembled to large-span space broken line truss high altitude, its characterized in that: including support column (1), steel truss (2) and bed-jig (3), steel truss (2) erect between two support columns (1), two be provided with a plurality of bed-jig (3) between support column (1), steel truss (2) are withstood to the top of bed-jig (3).

2. The high-altitude splicing structure of a large-span space broken line truss as set forth in claim 1, wherein: the steel truss (2) is formed by assembling a plurality of truss units (4).

3. The high-altitude splicing structure of a large-span space broken line truss as set forth in claim 1, wherein: the steel truss (2) is formed by welding or bolting a plurality of truss units (4).

4. The high-altitude splicing structure of a large-span space broken line truss as set forth in claim 1, wherein: the jig frame (3) comprises a base (301), standard knots (302) and a support top beam (303), wherein a plurality of standard knots (302) are connected between the support top beam (303) and the base (301).

5. The high-altitude splicing structure of the large-span space broken line truss as set forth in claim 4, wherein: an adjusting joint (304) and a hydraulic roof (305) are arranged above the support top beam (303).

6. The high-altitude splicing structure of the large-span space broken line truss as set forth in claim 4, wherein: the number of standard knots (302) is set according to the height required for the moulding bed (3).

7. The construction method of the high-altitude assembly structure of the large-span space broken line truss, as set forth in any one of claims 1 to 6, is characterized in that: the method comprises the following steps:

s1, segmenting a steel truss according to the design drawing, and deeply designing the steel truss (2) by integrating the hoisting capacity, the construction process, the construction method and the factors of convenience in component transportation;

s2, machining a member of the back field steel truss (2) according to a deepening diagram of the steel truss (2);

s3, transporting the steel truss (2) to a construction site in batches;

s4, installing a jig frame (3);

s5, hoisting and welding the steel truss (2) in a segmented mode;

s6, dismantling the jig frame (3).

8. The construction method of the high-altitude assembly structure of the large-span space broken line truss, as set forth in claim 7, is characterized in that: wherein step S4 further comprises the steps of:

s41, paying off positioning, demarcating a positioning line, positioning and rechecking;

s42, embedding a base (301) of the jig frame (3);

s43, hoisting a tower crane standard section (302), welding the standard section (302) with a base (301), and connecting the standard section (302) with the standard section (302) by bolts;

s44, installing an adjusting joint (304) and welding a standard joint (302);

s45, detecting welding quality;

s46, positioning, verticality and elevation rechecking of the jig frame (3).

9. The construction method of the high-altitude assembly structure of the large-span space broken line truss, as set forth in claim 7, is characterized in that: wherein step S5 further comprises the steps of:

s51, hoisting the steel truss (2) into position;

s52, rechecking elevation and position of the steel truss (2);

s53, welding a steel truss (2);

s54, appearance inspection and nondestructive flaw detection of the welding line.

10. The construction method of the high-altitude assembly structure of the large-span space broken line truss, as set forth in claim 7, is characterized in that: the deformation and displacement monitoring of the jig frame in the step S4 are simultaneously carried out in the construction process of the step S5; and in the construction process of the step S6, the deformation and displacement monitoring of the steel truss of the step S5 are performed at the same time.