CN210887752U

CN210887752U - T-shaped plate with I-shaped section

Info

Publication number: CN210887752U
Application number: CN201921406266.0U
Authority: CN
Inventors: 杨泓; 汤建峰; 王晓春
Original assignee: Changzhou Wujin Architectural Design Institute Co ltd
Current assignee: Changzhou Wujin Architectural Design Institute Co ltd
Priority date: 2019-08-27
Filing date: 2019-08-27
Publication date: 2020-06-30
Anticipated expiration: 2029-08-27

Abstract

The utility model relates to a T-shaped plate in I-shaped cross section, include the roof and be located the vertical web in roof below, the web is established in the middle of the roof back along roof length direction, and the bottom of web is equipped with the bottom flange that the width is greater than the web width, and the web both ends are equipped with along board span direction widen gradually to with the same wide bearing of bottom flange, the bearing includes the changeover portion between end section and the web. All stressed steel bars of the T-shaped plate can be placed in the lower flange, the effective height of the bent section is greatly increased, the bearing capacity is improved, the deflection is reduced, and materials are saved; after the web supporting part is widened, the section of the end part is greatly increased, so that the stress concentration phenomenon at the position is reduced, more non-prestressed anti-cracking reinforcing steel bars can be configured, and the cracking problem is thoroughly solved; because the end web plates are gradually widened and are directly proportional to the increase of the shearing force of the end sections, the shearing resistance and the bearing capacity are also enhanced; the T-shaped plate with the I-shaped section can be manufactured by adopting a long-line method, so that the template and the resource are saved.

Description

T-shaped plate with I-shaped section

Technical Field

The utility model relates to a building prefabricated component, especially a T shaped plate of I shape cross-section.

Background

Each row of the bottom of the abdomen of the conventional T-shaped plate can only be used for placing two stressed steel bars, when the number of the stressed steel bars at the bottom is large, five rows or even more are often placed, the effective height of the cross section of the rib beam is greatly reduced, the flexural bearing capacity of a component is influenced, materials are wasted, and the deflection is increased. The conventional T-shaped plate has the same total length and uniform section, namely the end web plate and the middle web plate are the same in width and are generally only 100-120 mm, the end supporting pressure stress is large, the stress is more complex due to the friction force of the prestressed steel bars at the bottom of the web plate, and the web plate is often cracked at the position of placement to cause potential safety hazards. In the manufacturing process, the conventional T-shaped plate is generally poured as a single block in an integral steel film, and the prestress can be released only after the curing in the steel film reaches 80% strength, which generally takes 2-3 days, so that the production efficiency is very low. If efficiency is to be improved, a plurality of sets of steel films are required to be produced simultaneously, and a single plate is produced, so that the steel strand is short, the prestress loss is large, and the waste of the lengthened steel strands at two ends is large. If the steel film is produced by adopting a full-length steel film long-line method, the investment of the steel film is very large, and the conversion cost is too high.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: overcomes the defects in the prior art and provides a T-shaped plate with an I-shaped section.

The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a T-shaped plate of I shape cross-section, includes the roof and is located the web of the vertical setting in roof below, the web sets up in the middle of the roof back along roof length direction, the bottom of web is equipped with the bottom flange that the width is greater than the web width, and the web both ends are equipped with the gradual widen to with the same wide bearing portion of bottom flange, the bearing includes the tip section and the changeover portion between tip section and the web.

Further limiting, a plurality of non-prestressed anti-cracking reinforcing steel bars are arranged in the lower flange.

The utility model has the advantages that: all stressed steel bars of the T-shaped plate with the I-shaped structure can be placed in the lower flange, the effective height of the cross section bending is greatly increased, the bearing capacity is improved, the deflection is reduced, and materials are saved; after the web supporting part is widened, the section of the end part is greatly increased, so that the stress concentration at the position is reduced, more non-prestressed anti-cracking reinforcing steel bars can be configured, and the cracking problem is thoroughly solved; because the end web plates are gradually widened and are directly proportional to the increase of the shearing force of the end sections, the shearing resistance and the bearing capacity are also greatly enhanced; the T-shaped plate with the I-shaped structure can be manufactured by a long-line method, only 3-5 sets of templates are needed, the templates can be disassembled after initial setting for 2-4 hours, the templates are disassembled and assembled before and after installation, and the templates are recycled, so that the templates are saved, and the manpower resources can be fully utilized.

Drawings

The present invention will be further described with reference to the accompanying drawings and embodiments.

Fig. 1 is a front view of the present invention.

Fig. 2 is a top view of fig. 1.

Fig. 3 is a side view of fig. 1.

In the figure: 1. the structure comprises a top plate, 2 a web, 3 a lower flange, 20 a supporting part, 201 an end section and 202 a transition section.

Detailed Description

The invention will now be further described with reference to the accompanying drawings. The drawings are simplified schematic diagrams only illustrating the basic structure of the present invention in a schematic manner, and thus show only the components related to the present invention.

As shown in fig. 1 to 3, the T-shaped plate with an i-shaped cross section of the present embodiment includes a top plate 1 and a web 2 vertically disposed below the top plate 1, the web 2 is disposed in the middle of the back of the top plate 1 along the length direction of the top plate, a bottom of the web 2 is provided with a bottom flange 3 whose width is greater than the width of the web 2, two ends of the web 2 are provided with support portions 20 gradually widening to the same width as the bottom flange 3, and each support portion 20 includes a head end segment 201 and a transition segment 202 between the head end segment 201 and the web 2. A plurality of non-prestressed anti-cracking reinforcing steel bars are arranged in the lower flange 3.

The manufacturing process of the T-shaped plate with the i-shaped structure in the embodiment is as follows: the method is characterized in that a spliced steel formwork is adopted, 2 left and right templates are fixed on a formwork table steel plate in a layered mode, after a steel strand is well tensioned by a long-line method, a first beam is poured in the morning, then a second beam and a third beam are poured, after the concrete of the first beam reaches a demolding condition after 2-4 hours, the templates can be detached from two sides, the concrete is transferred to a rear formwork to be poured, and the operation is repeated, so that the templates are saved, and the manpower resources can be fully utilized.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable people skilled in the art to understand the contents of the present invention and implement the present invention, and the protection scope of the present invention can not be limited thereby, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims

1. The utility model provides a T shaped plate of I shape cross-section, includes roof (1) and web (2) that are located the vertical setting in roof (1) below, web (2) set up in the middle of roof (1) back along roof length direction, its characterized in that: the bottom of web (2) is equipped with width and is greater than bottom flange (3) of web (2) width, and web (2) both ends are equipped with gradually widen to with bottom flange (3) with wide bearing portion (20), bearing portion (20) include end section (201) and web (2) between changeover portion (202).

2. A T-shaped plate having an i-shaped cross-section as claimed in claim 1, wherein: and a plurality of non-prestressed anti-cracking reinforcing steel bars are arranged in the lower flange (3).