CN211523766U

CN211523766U - Prefabricated concrete beam for bearing concrete scissors stair firewall

Info

Publication number: CN211523766U
Application number: CN202020041882.7U
Authority: CN
Inventors: 孟凡林; 孟祥瑞; 吴永亮; 付萍; 孟锦
Original assignee: Individual
Current assignee: Jilin Zhongding Architectural Design Co ltd
Priority date: 2020-01-09
Filing date: 2020-01-09
Publication date: 2020-09-18
Anticipated expiration: 2030-01-09

Abstract

The utility model provides a precast concrete roof beam that hot wall was prevented to bearing concrete scissors stair, belongs to civil engineering technical field, the utility model discloses a set up the recess on the precast concrete roof beam of bearing concrete scissors stair fire compartment wall for light partition plate can follow the both ends card of roof beam and easily push in the recess, installs very convenient and fast, and the invention is built concrete scissors stair fire compartment wall of high quality, work efficiency height, with low costs.

Description

Prefabricated concrete beam for bearing concrete scissors stair firewall

Technical Field

The utility model belongs to the technical field of civil engineering, especially relate to a precast concrete roof beam that bearing concrete scissors stair prevent hot wall and use it to carry out the method that concrete scissors stair fire compartment wall built.

Background

The construction quality of the concrete stairs in the building engineering is not easy to guarantee, the efficiency is low, the labor and the time are wasted, the construction cost is high, and the concrete stairs are common phenomena in the construction process of the concrete stairs. The concrete stairs built in an assembly mode have the advantages of excellent quality, high work efficiency, low construction cost, environmental friendliness and the like, and become common knowledge in the industry. For the assembled concrete scissor stairs, the fire partition wall is built on the stair sections in a traditional mode, or a beam for supporting the partition wall is arranged, and then a wall is built on the beam or a partition wall plate is installed, so that the assembled concrete scissor stairs are general in quality, low in efficiency and high in building cost.

In 8 months in 2019, Anhui building, published design and application of prefabricated scissor ladder with butterfly beam, DOI: 10.16330/j.cnki.1007-7359.2019.08.27, the shear ladder partition wall is built by adopting the precast concrete beam and the light partition wall board, which still belongs to the traditional method for installing the light partition wall board.

The utility model patent granted Specification CN201721324457.3 discloses an assembled scissors stair, relating to the technical field of buildings, is used for solving the technical problems of complicated erecting and manufacturing of cast-in-place stair component templates, low construction speed of secondary building stair partition walls and the like, comprises a prefabricated stair beam, two prefabricated stairs which are arranged in a crossed way and are erected on the prefabricated stair beam and a prefabricated partition wall which is positioned between the two prefabricated stairs, the prefabricated ladder beam comprises a vertical beam and a bracket beam connected with the bottom end of the vertical beam, an inner groove I is longitudinally arranged on the bracket beam, an inner groove II is arranged at the transverse center position, a convex block matched with the inner groove I is arranged at the joint of the bottom of the prefabricated staircase and the prefabricated staircase beam, outriggers connected with the inner groove II are arranged on two sides of the prefabricated partition wall, the prefabricated partition wall top surface sets up trapezoidal recess, and the bottom surface is provided with the trapezoidal lug with trapezoidal recess complex. But this utility model prefabricated partition wall size is great, and the handling difficulty is installed more difficultly, also does not express the clear relation of connection simultaneously.

The utility model discloses patent authorizes specification CN201820610778.8, discloses a staircase fire wall, and the staircase includes first floor platform, second floor platform and first floor half layer platform, is equipped with lower floor's stair section between first floor platform to the first floor half layer platform, is equipped with upper stair section between first floor half layer platform to the second floor platform, be provided with the fire wall between upper stair section and the lower floor's stair section, fire wall is triangle-shaped's shape on the perpendicular, and lower floor's stair section is connected to fire wall's lower limb, and the bottom surface of upper floor's stair section is connected to the upper limb. The utility model discloses a to build by laying bricks or stones firewall from the edge of lower floor's stair bench, build by laying bricks or stones the back department of upper stair bench by laying bricks or stones, increase the width of stair bench simultaneously, increase the bearing capacity of bench, undertake firewall's weight simultaneously, need not build by laying bricks or stones from the bottom plate of basement, when saving building wall material, practiced thrift engineering cost, reduce firewall's the degree of difficulty of building by laying bricks or stones. The utility model is a very traditional method, which has been used in practical engineering for a long time, and has the main problems of general quality, low work efficiency, high labor intensity and high construction cost.

The utility model discloses a fully prefabricated fire partition connecting structure of a scissor ladder staircase, which comprises a fire partition and stair beams positioned on two sides of the fire partition, wherein the stair beams are provided with supports; the fireproof partition wall comprises a wall body and hidden beams arranged on the wall body, two ends of each hidden beam protrude out of two sides of the wall body and are respectively positioned above the support at one side, and a gap is reserved between the end part of each hidden beam and the support; and the end part of each hidden beam is clamped with the support through an embedded connecting assembly. The utility model discloses a full prefabricated fire compartment partition wall connection structure between scissors ladder stairwell, it has solved the cross work of current scissors ladder stairwell construction dry and wet operation, has simplified the installation of stairwell fire compartment partition wall and the construction process who supports. But this utility model prefabricated partition wall size is great, and production preparation and handling difficulty, installation are more difficult, also do not express the clear relation of connection simultaneously.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: the prefabricated concrete beam for supporting the concrete shear stair fireproof wall is characterized in that a concrete shear stair fireproof partition wall is built by adopting a traditional light partition plate in an innovative connection mode, so that the concrete shear stair fireproof partition wall is good in building quality, high in working efficiency and low in cost.

The utility model provides a prefabricated concrete roof beam that hot wall was prevented to bearing concrete scissors stair, characterized by: the precast concrete beam comprises a precast concrete beam body, a pre-buried iron piece and a groove, wherein the precast concrete beam body is a concrete beam or a prestressed concrete beam; the cross section of the embedded iron piece is a right angle and is arranged at the vertex angles at two ends of the precast concrete beam body, and the sinking height of the embedded iron piece at the vertex angle is consistent with the thickness of the concrete stair beam reinforcing steel bar protection layer; the recess sets up bottom surface and the top surface at precast concrete beam body, and bottom surface department recess is trapezoidal, and top surface department recess is for falling trapezoidal, and the length of minor face is the same with light partition wall plate thickness size in trapezoidal two bottoms.

Through the above design scheme, the utility model discloses following beneficial effect can be brought: the invention relates to a precast concrete beam for supporting a concrete scissor stair firewall, which is characterized in that grooves are formed in the precast concrete beam for supporting the concrete scissor stair firewall wall, so that a light partition plate can be clamped in the grooves from two ends of the beam and pushed in easily, and the installation is very convenient and quick.

Drawings

The invention is further described with reference to the following drawings and detailed description:

figure 1 is the utility model discloses the front view schematic diagram of the precast concrete roof beam of hot wall is prevented to bearing concrete scissors stair.

3 figure 32 3 is 3 the 3 utility 3 model 3 discloses 3 the 3 A 3- 3 A 3 section 3 schematic 3 diagram 3 of 3 the 3 precast 3 concrete 3 roof 3 beam 3 of 3 hot 3 wall 3 is 3 prevented 3 to 3 bearing 3 concrete 3 scissors 3 stair 3. 3

Figure 3 is the utility model discloses the B-B section schematic diagram of the precast concrete roof beam of hot wall is prevented to bearing concrete scissors stair.

Fig. 4 is a schematic sectional view of the first concrete stair beam of the present invention.

Figure 5 is the utility model discloses the front view schematic diagram of the precast concrete beam of hot wall is prevented to installation first floor bearing concrete scissors stair.

FIG. 6 is a schematic cross-sectional view of a precast concrete beam of the first floor of the concrete scissor stair firewall and a concrete stair beam of the previous floor of the stair firewall.

Fig. 7 is a schematic front view of the stair section with the concrete scissors installed on the floor according to the embodiment of the present invention.

Figure 8 is the embodiment of the utility model provides an install the front view schematic diagram of the precast concrete roof beam that one deck bearing concrete scissors stair prevent hot wall.

Fig. 9 is a schematic front view of the light partition board according to the embodiment of the present invention.

Fig. 10 is a schematic view of a C-C section of the installed lightweight partition board according to the embodiment of the present invention.

In the figure, 1-precast concrete beam body, 2-embedded iron member, 3-groove, 4-concrete stair beam, 5-stair section, 6-light partition board and 7-mortar.

Detailed Description

A precast concrete beam for bearing a concrete scissor stair firewall comprises a precast concrete beam body 1, a pre-buried iron member 2 and a groove 3, wherein the precast concrete beam body 1 is a concrete beam or a prestressed concrete beam; the cross section of the embedded iron piece 2 is a right angle and is arranged at the vertex angles at two ends of the precast concrete beam body 1, and the sinking height of the embedded iron piece 2 at the vertex angles is consistent with the thickness of a concrete stair beam steel bar protection layer; the groove 3 is arranged on the bottom surface and the top surface of the precast concrete beam body 1, the groove 3 at the bottom surface is trapezoidal, the groove 3 at the top surface is inverted trapezoidal, and the length of the short edge in the two trapezoidal bottom edges is the same as the thickness of the light partition board 6.

The method for building the concrete scissor stair fire-proof partition by applying the precast concrete beam for supporting the concrete scissor stair fire-proof partition of the utility model comprises the following steps which are sequentially carried out as shown in figures 1-8,

step one, preparing a precast concrete beam for supporting a concrete shear stair fire partition wall

As shown in fig. 1 to 3, the precast concrete beam for supporting the concrete scissor stair fire bulkhead is prepared, and comprises a precast concrete beam body 1, a pre-buried iron member 2 and a groove 3, wherein the precast concrete beam body 1 is a common concrete beam or a prestressed concrete beam; the embedded iron pieces 2 are arranged at the top corners of the two ends of the precast concrete beam body 1 and sink to the height of the thickness of the reinforcing steel bar protection layer; the grooves 3 are formed in the bottom surface and the top surface of the precast concrete beam body 1, the grooves 3 in the bottom surface are trapezoidal, the grooves 3 in the top surface are inverted trapezoidal, and the size of the smaller bottom side in the trapezoidal shape of the grooves 3 is the same as the thickness of the light partition plate 6;

step two, arranging the pre-buried iron pieces 2 on the concrete stair beam 4

As shown in fig. 4, a concrete stair beam 4 is constructed by adopting a cast-in-place or prefabrication mode, and the same embedded iron pieces 2 are arranged at the positions corresponding to the embedded iron pieces 2 on the precast concrete beam body 1;

step three, mounting the precast concrete beam of the first layer of bearing concrete scissors stair fire partition wall

As shown in fig. 5, the precast concrete beam for supporting the concrete scissor fire partition is lifted to an installation station, the pre-embedded iron pieces 2 on the precast concrete beam body 1 are correspondingly adjacent to the pre-embedded iron pieces 2 arranged on the concrete stair beam 4, and the two adjacent pre-embedded iron pieces 2 are welded and connected;

step four, installing a precast concrete beam for supporting the concrete scissor stair fire partition wall

As shown in fig. 6 to 8, after the concrete stair girders 4 of the previous layer are built, the concrete scissor stair sections 5 are installed, and then the prefabricated concrete girders for supporting the concrete scissor stair fire partitions of the previous layer are installed in the same step three;

step five, installing the light partition board 6

As shown in fig. 9 to 10, the height of the light partition plate 6 is cut from the bottom of the groove 3 on the top surface of the lower precast concrete beam body 1 to the top of the groove 3 on the bottom surface of the upper precast concrete beam body 1, and the cut light partition plate 6 is pushed between the precast concrete beam bodies 1 on the upper and lower layers from the two ends of the precast concrete beam body 1, embedded into the groove 3 on the bottom surface and the groove 3 on the top surface and abutted against each other; filling, leveling and press polishing the gaps and the grooves between the light partition wall plate 6 and the precast concrete beam body 1 and between the light partition wall plate 6 and the concrete shear stair sections 5 by using mortar 7.

Thus, the construction method of the concrete shear stair fireproof partition wall is completed.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a prefabricated concrete roof beam that hot wall was prevented to bearing concrete scissors stair, characterized by: the precast concrete beam comprises a precast concrete beam body (1), an embedded iron piece (2) and a groove (3), wherein the precast concrete beam body (1) is a concrete beam or a prestressed concrete beam; the cross section of the embedded iron piece (2) is a right angle and is arranged at the vertex angles at the two ends of the precast concrete beam body (1), and the sinking height of the embedded iron piece (2) at the vertex angles is consistent with the thickness of a concrete stair beam steel bar protection layer; the groove (3) is arranged on the bottom surface and the top surface of the precast concrete beam body (1), the groove (3) at the bottom surface is trapezoidal, the groove (3) at the top surface is inverted trapezoidal, and the length of the short edge in the two trapezoidal bottom edges is the same as the thickness of the light partition board (6).