CN117266519A - Assembled silo roof supporting platform and installation method - Google Patents

Abstract

An assembled silo roof support platform and installation method. A central cylinder section frame is installed above the basic base. The central barrel section frames are connected to form a central barrel. Attachments are installed on the central barrel section frame at certain heights. The central barrel section frame is installed When it reaches the design height, a top disk is installed on its upper end. A diagonal brace is installed between the bottom of the top disk and the central cylinder section frame. Several trusses are set between the edge of the top disk and the reserved installation slot on the top of the silo. All The trusses are radially shaped to form an umbrella frame; the installation method includes the steps of foundation base installation, center tube installation, attachment installation, top disk installation, truss installation and inspection and acceptance. The invention is suitable for supporting the construction of silo roof structures with different diameters and heights. It adopts an assembled type and has the characteristics of light weight, turnover, high safety, fast construction and high economy. It has low cost in the construction of silo projects. Advantages, it can promote the standardization and standardization of the warehouse roof structure support system; the installation method can safely and effectively achieve the installation and construction purpose of this support platform.

Description

Assembled silo roof support platform and installation method

Technical field

The invention belongs to the field of construction engineering silo structure construction, and is a support platform used for the construction of reinforced concrete structure silo roofs and an installation method thereof.

Background technique

At present, the domestic construction warehouse roof structural support systems mainly include full-hall scaffolding support system, central scaffolding + truss support system, Bailey frame system, central lattice column + truss system, and the construction methods are diverse. However, the warehouse roof structural support system is not an industry system, lacks unified standards, and construction safety is not high. If a full hall of scaffolding is erected, not only the construction period will be long, but also the construction cost will be high; if support types such as center frame + truss, Bailey frame, etc. are used, the silo support systems of different diameters will be different, cannot be used universally, and have poor economic efficiency. In order to solve the above problems, it is necessary to design a support system suitable for the construction of silo roof structures of different diameters and heights. It adopts an assembled type and has the characteristics of light total weight, turnover, high safety, fast construction, and high economy. In the construction of silo projects, it can improve the construction cost and competitive advantage of enterprises, and promote the standardization and standardization of the silo roof structural support system.

Contents of the invention

The purpose of the present invention is to provide an assembled silo roof support platform and an installation method to solve the defects of the existing silo roof structural support system such as low construction safety, high construction cost and poor economy.

The object of the present invention is achieved in the following manner: an assembled silo roof support platform, including a basic base fixed at the bottom of the silo, a central cylinder section frame is installed above the basic base, and a plurality of central cylinder section frames are connected to each other It constitutes a central tube, which serves as the overall force-bearing fulcrum of the assembled silo roof support platform, transmitting the power of the entire platform to the ground foundation; the central tube section frame is installed with attachments that overlap with the inner wall of the silo at certain heights. It is used to improve the stability of the central cylinder; when the central cylinder section frame is installed to the designed height, a top disk is installed on the upper end. The top disk serves as the general hub of the warehouse roof platform and is used to install the load-bearing support platform truss; the bottom of the top disk and the center Diagonal braces are installed between the cylinder sections to transmit the vertical force of the top disk; a number of trusses are set between the edge of the top disk and the reserved installation groove on the top of the silo, and all the trusses form a radial umbrella shape. , the trusses are covered with steel springboards, and a full hall of scaffolding is set up above the steel springboards to assist in the construction of the silo roof structure.

The central cylinder section frame is a cylindrical structure made of welded seamless steel pipes. Positioning sleeves are added at the connecting parts of the two central cylinder section frames to improve the installation accuracy of the central cylinder section frame.

There is a working platform on the upper part of the lower central cylinder frame at the connection point of the two central cylinder frames. The working platform is a combined removable steel platform, which is used for the assembly construction of the two central cylinder frames and provides a construction position for installation.

Install attachments at different heights above and below the central cylinder. One end of the attachment is installed on the central cylinder frame. The other end of the attachment is connected to the reserved connecting ear on the silo wall. Three attachments on the same plane are evenly distributed along the circumference. Or 4, the attachment is used to strengthen the stability of the central cylinder; the attachment is composed of segments of different lengths, and the segments at both ends are respectively equipped with adjusting screw rods. The length of the attachment is ensured to meet the needs of the silo diameter by fine-tuning the adjustment screw. .

The central cylinder section frame is available in different length specifications, which can meet the construction needs of silos of different specifications through reasonable matching.

The trusses are spliced together from truss sections of different lengths to meet the construction needs of silos of different specifications.

The top disc is assembled from four equally divided disc sections, which not only reduces the weight of a single piece, but also reduces the difficulty of hoisting and installation.

Steel pipes are welded at equal distances above the trusses, which are used to root and fix the scaffolding roots when erecting the scaffolding throughout the hall.

An installation method of the assembled silo roof support platform adopts the following steps:

(1) Basic base installation

Check the exposed length of the pre-embedded fixing bolts at the bottom of the silo and the flatness of the foundation surface. Use a tower crane to lift the foundation base into place. Drop the foundation base onto the foundation surface. The fixing bolts protrude from the bolt holes of the foundation base and screw on the fixing bolts. Insert the nut to fix;

(2) Center tube installation

Install a working platform on the upper part of the central cylinder frame, use a tower crane to hoist the first central cylinder frame and fix it on the basic base through bolt connection, then install the subsequent central cylinder frames in sequence, and assemble the multi-section central cylinder frame. The central tube reaches the designed height;

(3) Attachment installation

The attachment parts are connected and fixed with the central cylinder frame using a hoop type. Before installation, the embedded parts must be buried in the warehouse wall. The embedded parts must be perforated and plug welded. The installation of attachment parts should be carried out simultaneously with the installation of the central cylinder. The installation of the central cylinder When the installation position of the first layer of attachments is reached, the first layer of attachments can be installed. When the center tube is installed at the position of the second layer of attachments, the second layer of attachments can be installed, and so on. It is strictly prohibited to unify the center tube after installation. Install the attachments; during installation, first assemble the standard sections of the attachments, and then use a tower crane to lift them to the installation surface after verification. The side near the silo wall uses a sliding form hanger as the operating surface, and the center side uses an assembly platform for installation;

(4) Top disc installation

The top disc is composed of four disc sections, and each disc section is equipped with a corresponding diagonal brace. First, the outer ring beam outside each disc section is connected to one end of the diagonal brace through bolts, and a tower crane is used. Lift and install the four assemblies symmetrically, connect the inner side of the disc section to the central cylinder section frame, then connect the diagonal support rod to the connecting ring at the lower part of the central cylinder section frame through bolts, and connect the adjacent disc sections through bolts ;

(5) Truss installation

There are several trusses in a set of assembled silo roof construction platform trusses, and each truss is composed of several truss sections. After combining the truss sections of each truss into a truss, the whole silo is hoisted into place and installed. During installation, a symmetrical arrangement of the trusses is adopted. Keep the force on both ends of the central tube uniform; the angle steel between the trusses is connected with bolts, and the trusses and disc sections are also connected with bolts. The outer ends of the trusses are correspondingly connected in the reserved installation slots on the top of the silo; the truss installation is completed Finally, on-site scaffolding steel pipes should be used to connect them into a whole to ensure the stability of the trusses; the trusses are covered with steel springboards, and a full hall of scaffolding is set up above the steel springboards;

(6) Inspection and acceptance

After the installation of the prefabricated silo roof construction platform is completed, an overall post-installation inspection and acceptance is carried out to check the verticality, curvature, twist and bolt connections. The acceptance results must meet the design specifications and standards.

The present invention enables the assembled silo roof support platform to be firmly connected to the reinforced concrete foundation through a basic base; the support platform is adapted to the construction of silo roofs of different heights through central tube sections of different lengths; attachments installed at intervals make the center The tube stands more firmly; the top disc is fixed above the central tube for installing the truss; the diagonal brace is installed below the top disc to transmit the force of the top disc and improve the overall stability of the support platform; the top of the truss is welded at equal intervals Steel pipes are set up to erect scaffolding to assist in the construction of the silo roof structure.

The beneficial effects of the present invention are: it is suitable for supporting the construction of silo roof structures of different diameters and different heights. It adopts an assembled type and has the characteristics of light total weight, turnover, high safety, fast construction and high economy. During the construction of warehouse projects, it can improve the company's construction cost advantage and promote the standardization and standardization of the warehouse roof structural support system; the installation method can safely and effectively achieve the purpose of installation and construction of this support platform.

Description of the drawings

Figure 1 is a schematic structural diagram of the present invention;

Figure 2 is a schematic structural diagram of the attachment in the present invention;

Figure 3 is a schematic diagram of the truss layout in the present invention;

Figure 4 is a schematic diagram of the working platform in the present invention;

Figure 5 is a schematic diagram of the top disk in the present invention;

Figure 6 is a schematic diagram of the disc section.

In the picture: 1-Basic base; 2-Central tube frame; 3-Attachment; 4-Top disc; 5-Diagonal brace; 6-Truss; 7-Mounting slot; 8-Working platform; 9-Silo ; 10-silo bottom; 11-outer ring beam; 12-cross beam; 13-reinforcement rib; 14-disc section.

Detailed ways

Referring to Figures 1 to 6, before installing the assembled silo top support platform, anchor bolts need to be pre-buried in the center of the bottom 10 of the silo 9 for fixing the foundation base 1, and the first central cylinder section is installed above the foundation base 1 Sectional frame 2, the central tube section frame 2 is a cylindrical structure that can be welded with 1020mm outer diameter and 12mm thick seamless steel. The central tube section frame 2 can be designed with different lengths such as 6m, 5m, 3m, etc., for different combinations The height of the central cylinder is suitable for the construction of silos of different heights; several central cylinder segments 2 are connected to form a central cylinder, and a positioning sleeve is provided on the end face of the lower central cylinder segment 2 to improve the installation accuracy of the center cylinder 2. ; When the two central cylinder frames 2 are connected, a working platform 8 is provided on the upper part of the lower central cylinder frame 2 at a position 1 meter away from the top to assist in the heightening connection of the central cylinder frame 2. The working platform 8 is a combined and detachable type. Steel installation platform; the central cylinder frame 2 is installed with attachments 3 that overlap the inner wall of the silo 9 at certain heights (for example, 15 meters). One end of the attachment 3 is installed on the central cylinder frame 2, and the other end of the attachment 3 Connected to the connecting ears reserved on the silo wall of silo 9, there are three attachments 3 on the same plane evenly distributed along the circumferential direction. The attachments are composed of sections of different lengths of 3m and 2m, and the sections at both ends are respectively equipped with adjusting screws. Each adjusting screw can adjust the length of 30cm. By fine-tuning the adjusting screw, the length of the attachment 3 can be ensured to meet the diameter requirements of the silo 9. The attachment 3 is used to improve the stability of the central cylinder; when the central cylinder section frame 2 is installed to the design height , the top disc 4 is installed on the upper end; the top disc 4 is assembled from four equally divided disc sections 14. Two adjacent disc sections 14 are connected by bolts, and each disc section 14 is composed of radial disc sections 14. The outer ends of a number of cross beams 12 are connected to an arc-shaped outer ring beam 11, and a number of reinforcing ribs 13 are provided on the top of the outer ring beam 11; an oblique brace 5 is installed between the bottom of the top disk 4 and the central tube frame 2. The disk 4 is evenly distributed with reserved holes for the installation of the trusses 6. A number of trusses 6, for example 60, are provided between the edge of the top disk 4 and the reserved installation groove 7 at the top of the silo. The trusses 6 are composed of trusses of different lengths. The truss sections can be spliced together with different lengths of 3m and 2m to meet the construction needs of different warehouse types; one end of the truss 6 is fixed on the top disk 4 through bolts, and the other end is placed in the installation space reserved in advance on the top of the silo 9 In the slot 7, all the trusses 6 are radially formed into an umbrella shape. The trusses 6 are covered with steel springboards, and a full hall of scaffolding is set up above the steel springboards. Steel pipes are welded at equal intervals above the trusses 6.

To install the assembled silo roof support platform, use the following steps:

(1) Basic base installation

Check the exposed length of the 10 pre-embedded fixing bolts at the bottom of silo 9 and the flatness of the foundation surface. Use a tower crane to lift the foundation base 1 into place, drop the foundation base 1 to the foundation surface, and remove the fixing bolts from the bolt holes of the foundation base 1. Extends in the middle and is fixed with nuts;

(2) Center tube installation

Install the working platform 8 on the upper part of the central cylinder section frame 2, use a tower crane to hoist the first section of the central cylinder section frame 2 and fix it on the foundation base 1 through bolt connection, and then install the following central cylinder section frame 2 and multiple sections in sequence. The central cylinder section frame 2 is assembled into a central cylinder with a designed height;

(3) Attachment installation

Attachment 3 is connected and fixed with the central cylinder frame 2 using a hoop type. Before installation, embedded parts must be buried in the wall of silo 9. The embedded parts must be perforated and plug welded. Attachment 3 should be installed along with the central cylinder. The installation is carried out simultaneously. When the central cylinder is installed to the installation position of the first layer of attachments 3, the first layer of attachments 3 can be installed. When the central cylinder is installed in the position of the second layer of attachments 3, the second layer of attachments 3 can be installed. Installation, and so on, it is strictly prohibited to install the attachment 3 together after installing the central cylinder; during installation, first assemble the attachment 3 standard sections, verify that they are correct, and then use a tower crane to lift them to the installation working surface, close to the silo 9 wall One side uses a sliding form hanger as the operating surface, and the center side uses an assembly platform for installation;

(4) Top disc installation

The top disk 4 is composed of four disk sections 14, and each disk section 14 is provided with a corresponding diagonal brace 5; first, pass the outer ring beam 11 outside each disk section 14 and one end of the diagonal brace 5 For bolt connection, use a tower crane to hoist and install the four assemblies symmetrically, connect the inner side of the disc section 14 to the central tube section frame 2, and then connect the diagonal support rod 5 to the connecting ring at the lower part of the central tube section frame 2 through bolts. Connect adjacent disc sections 14 with bolts;

(5) Truss installation

A set of 6 assembled silo roof construction platform trusses has several trusses, each of which is composed of several truss sections; the truss sections of each truss are combined into a truss and then the whole is hoisted into place and installed. During installation, a symmetrical arrangement of the trusses is adopted. , to keep the force on both ends of the central tube uniform; the angle steel between the trusses 6 is connected with bolts, and the trusses 6 and the disc section 14 are also connected with bolts. The outer end of the truss 6 is correspondingly connected to the reserved installation on the top of the silo 9 In the trough; after the installation of truss 6 is completed, on-site scaffolding steel pipes should be used to connect them as a whole to ensure the stability of truss 6; truss 6 is covered with steel springboards, and a full hall of scaffolding is erected above the steel springboards;

(6) Inspection and acceptance

After the installation of the prefabricated silo roof construction platform is completed, an overall post-installation inspection and acceptance is carried out to check the verticality, curvature, twist and bolt connections. The acceptance results must meet the design specifications and standards.

After the construction of the silo roof is completed, reverse the operation to remove the support platform.

Claims (9)

1. The utility model provides an assembled silo roof supporting platform, includes the basic base of fixing at silo bottom of the silo, its characterized in that: a central shell ring frame (2) is arranged above a foundation base (1), a plurality of central shell ring frames (2) are connected to form a central barrel, an attaching piece (3) which is overlapped with the inner wall of a silo is arranged on the central shell ring frame (2) at intervals of a certain height, a top disc (4) is arranged at the upper end of the central shell ring frame when the central shell ring frame is arranged at a designed height, an inclined stay bar (5) is arranged between the lower part of the top disc (4) and the central shell ring frame (2), a plurality of trusses (6) are arranged between the edge of the top disc (4) and an installation groove (7) reserved at the top of the silo, all trusses (6) radially form umbrella ribs, steel springboards are fully paved on the trusses (6), and a full scaffold is erected above the steel springboards.

2. The assembled silo roof support platform of claim 1, wherein: the central cylindrical section frame (2) is of a cylindrical structure formed by welding seamless steel pipes, and a positioning sleeve is additionally arranged at the connecting part of the two sections of central cylindrical section frames (2) so as to improve the installation accuracy of the central cylindrical section frames.

3. The assembled silo roof support platform of claim 1, wherein: the upper part of the central cylinder section frame (2) below the joint of the two sections of central cylinder section frames (2) is provided with a working platform (8), and the working platform (8) is a combined detachable steel platform.

4. The assembled silo roof support platform of claim 1, wherein: the attachment pieces (3) are arranged on the upper and lower different heights of the central cylinder, one end of each attachment piece (3) is arranged on the central cylinder section frame (2), the other end of each attachment piece (3) is connected with the connecting lugs reserved on the cylinder wall of the silo (9), and 3 or 4 attachment pieces (3) on the same plane are uniformly distributed along the circumferential direction; the attachment piece (3) is composed of sections with different lengths, and the sections at the two ends are respectively provided with an adjusting screw rod.

5. The assembled silo roof support platform of claim 1, wherein: the central shell ring frame (2) is provided with specifications with different lengths.

6. The assembled silo roof support platform of claim 1, wherein: the truss (6) is formed by splicing truss sections with different lengths.

7. The assembled silo roof support platform of claim 1, wherein: the top disc (4) is formed by splicing equally divided four-petal disc segments (14).

8. The assembled silo roof support platform of claim 1, wherein: steel pipes are welded above the truss (6) at equal intervals.

9. A method of installing the assembled silo roof support platform of claim 1, comprising the steps of:

(1) Base mount

Checking the exposed length of a pre-buried fixing bolt at the bottom of a silo and the flatness of a foundation surface, hoisting a foundation base in place by using a tower crane, dropping the foundation base on the foundation surface, extending the fixing bolt from a bolt hole of the foundation base, and screwing a nut on the fixing bolt for fixing;

(2) Center tube installation

A working platform is arranged at the upper part of the central cylinder section frame, a first central cylinder section frame is fixed on a foundation base through bolt connection by adopting tower crane hoisting, then the upper central cylinder section frames are sequentially arranged, and a plurality of sections of central cylinder section frames are assembled into a central cylinder with designed height;

(3) Attachment fitting

The attachment piece is fixedly connected with the central shell ring frame by adopting a hoop, the embedded piece is buried in the wall of the silo before installation, the embedded piece is required to be subjected to perforation plug welding, the attachment piece is installed along with the installation of the central barrel, the central barrel is installed at the installation position of the first layer of attachment piece, the first layer of attachment piece can be installed, the second layer of attachment piece is installed when the installation position of the central barrel reaches the position of the second layer of attachment piece, and the like, and the attachment piece is uniformly installed after the central barrel is tightly forbidden to be installed; when the device is installed, firstly, the standard section of the attachment is assembled, after verification, the attachment is lifted to an installation working surface by using a tower crane, one side close to the silo wall is installed by using a sliding mode lifting frame as an operation surface, and the central side is installed by using an assembly platform;

(4) Top disc mounting

The top disc consists of four disc sections, and each disc section is provided with a corresponding inclined stay bar; the outer ring beam at the outer side of each disc section is connected with one end of an inclined strut through a bolt, four assemblies are symmetrically hoisted and installed by using a tower crane, the inner side of the disc section is connected with a central shell section frame, the inclined strut is connected with a connecting ring at the lower part of the central shell section frame through a bolt, and adjacent disc sections are connected through bolts;

(5) Truss installation

The truss of the construction platform at the top of the assembled silo is sleeved with a plurality of trusses, and each truss consists of a plurality of truss sections; after combining a plurality of truss sections of each truss into truss, integrally hoisting the truss into position and installing the truss, wherein the truss is symmetrically arranged in the installation mode so as to keep the stress at the two ends of the central cylinder uniform; the angle steel between the trusses is connected by bolts, the trusses are also connected with the disc sections by bolts, and the outer ends of the trusses are correspondingly connected in the reserved mounting grooves at the tops of the silos; after the truss is installed, the steel pipes of the field scaffold are connected into a whole, so that the truss stability is ensured; fully paving a steel springboard on the truss, and erecting a full-hall scaffold above the steel springboard;

(6) Checking and accepting

After the assembly type silo roof construction platform is installed, the assembly type silo roof construction platform is integrally inspected and accepted after being installed, verticality, bending degree, torsion degree and bolt connection conditions are inspected, and inspection and acceptance results are required to meet design specification standard requirements.