CN104727469A

CN104727469A - Staircase prefabricated reinforced concrete fireproof bulkhead structure and construction method thereof

Info

Publication number: CN104727469A
Application number: CN201510084134.0A
Authority: CN
Inventors: 郭海山; 刘康; 杨晓杰; 耿娇; 范昕; 齐虎; 李明
Original assignee: China State Construction Engineering Corp Ltd CSCEC
Current assignee: China State Construction Engineering Corp Ltd CSCEC
Priority date: 2015-02-16
Filing date: 2015-02-16
Publication date: 2015-06-24
Anticipated expiration: 2035-02-16
Also published as: CN104727469B

Abstract

The invention discloses a staircase prefabricated reinforced concrete fireproof bulkhead structure which is composed of a prefabricated reinforced concrete fireproof bulkhead, a prefabricated concrete stair, staircase stair landing beams and connecting pieces. Bulkhead lifting lugs are arranged on the two sides of the upper portion of the prefabricated reinforced concrete fireproof bulkhead, and the prefabricated reinforced concrete fireproof bulkhead is hung on the top faces of the staircase stair landing beams through the bulkhead lifting lugs on the two sides. The invention further comprises a construction method of the fireproof bulkhead structure. The method comprises the steps of pouring or hoisting of the staircase stair landing beams, hoisting of the inner side prefabricated concrete stair, hoisting of the prefabricated reinforced concrete fireproof bulkhead, and connection of the prefabricated reinforced concrete fireproof bulkhead and the inner side prefabricated concrete stair through the connecting pieces. The prefabricated reinforced concrete fireproof bulkhead is mounted in a hanging mode, structure stability is good, and force transmission is clear; the staircase prefabricated reinforced concrete fireproof bulkhead structure can be produced through a common wallboard production line, and is low in cost, convenient to manufacture and mount, and suitable for being applied to design and construction of prefabricated fireproof bulkheads of scissor stairs of high-rise residences.

Description

A kind of staircase prefabricated reinforced concrete fire barrier structure and construction thereof

Technical field

The invention belongs to reinforced concrete work technical field, particularly a kind of staircase prefabricated reinforced concrete fire barrier structure and construction thereof.

Background technology

At present, the mounting means of staircase prefabricated reinforced concrete fire barrier mainly dividing plate is arranged on marking time of precast stair, top is connected with stair base plate, this mounting means causes the complex-shaped of fire barrier, following zigzag, top is hypotenuse, adds the difficulty of making, reduces the service efficiency of platform mould; In addition, the stair gangboard of large span bears larger load, the increase corresponding to arrangement of reinforcement of stair cross section; In addition, fire barrier is all connected with stair up and down, and integral rigidity is large, easy to crack under geological process.

Summary of the invention

The object of the invention is to provide a kind of staircase prefabricated reinforced concrete fire barrier to construct and construction, solves the problem that the prefabricated fire barrier cost of current high residential building scissors ladder is high, easy to crack.

In order to realize above-mentioned task, the present invention adopts following technical solution: a kind of staircase prefabricated reinforced concrete fire barrier structure, and described structure is made up of prefabricated reinforced concrete fire barrier, precast concrete stair, staircase half space beam and connector; Both sides, described prefabricated reinforced concrete fire barrier top have dividing plate to choose ear, and dividing plate is chosen in ear and is covered with one deck and chooses ear reinforcing bar, and described prefabricated reinforced concrete fire barrier chooses by the dividing plate of both sides the end face that ear-hang is located at staircase half space beam; Prefabricated reinforced concrete fire barrier is fixedly connected with described precast concrete stair by connector.

Further, in described prefabricated reinforced concrete fire barrier, be embedded with dividing plate built-in fitting, built-in hanger and demoulding hanging piece, and be covered with one deck dividing plate reinforcing bar.

Further, stair built-in fitting is embedded with in described precast concrete stair.

Further, position is mutually corresponding in the horizontal and vertical directions for the dividing plate built-in fitting in described prefabricated reinforced concrete fire barrier and the stair built-in fitting in described precast concrete stair.

Further, described connector is connecting angle, and connecting angle is connected with described precast concrete stair bolt.

Further, the concrete material of described prefabricated reinforced concrete fire barrier can be ordinary concrete, haydite concrete or gas concrete.

The invention also discloses the construction of a kind of prefabricated reinforced concrete fire barrier structure, comprise the steps:

Step one, build or lift staircase half space beam;

Step 2, lifting inner side precast concrete stair;

Step 3, hoisting prefabricated reinforced concrete fireproof dividing plate;

Step 4, with connector prefabricated reinforced concrete fire barrier to be bolted with inner side precast concrete stair together with and adjust position and the verticality of prefabricated reinforced concrete fire barrier;

Step 5, lifting outside precast concrete stair;

Step 6, with connector prefabricated reinforced concrete fire barrier to be bolted with outside precast concrete stair together with;

Step 7, last, plate seam is in the milk and performs fireproof blocking.

Compared with prior art, technical advantage of the present invention specifically has the following aspects:

1, adopt the mode hung to install steel concrete fire barrier, structural stability is good, and power transmission is clear and definite, and decrease reinforcing bar and the concrete amount of precast stair, macroeconomic is good;

2, profile is simple, and common wallboard production line can be utilized to carry out High-efficient Production, and easy to make, cost is low; Need not plaster in precast concrete surface, decrease situ wet operation, reduce cost;

3, light weight concrete construction can be adopted to make, from heavy and light, easy for installation.Light weight concrete construction can be adopted to make, from heavy and light, easy for installation, be applicable to the design and the construction that are applied to the prefabricated fire barrier of high residential building scissors ladder.

Staircase prefabricated reinforced concrete fire barrier structure of the present invention, have employed the hang that power transmission is succinct, has from heavy and light, construct convenient, structure, decoration integrated advantage, be applicable to the fire barrier of high residential building precast concrete scissors ladder.

Accompanying drawing explanation

Fig. 1 is prefabricated reinforced concrete fire barrier stereogram;

Fig. 2 is prefabricated reinforced concrete fire barrier arrangement of reinforcement schematic diagram;

Fig. 3 is staircase prefabricated reinforced concrete fire barrier assembling structure schematic diagram;

In figure, 1-prefabricated reinforced concrete fire barrier; Ear chosen by 2-dividing plate; 3-chooses ear reinforcing bar; 4-dividing plate built-in fitting; 5-built-in hanger; 6-demoulding hanging piece; 7-dividing plate reinforcing bar; 8-precast concrete stair; 9-stair built-in fitting; 10-staircase half space beam; 11-connector.

Detailed description of the invention

Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described.

As shown in Figure 1-Figure 3, a kind of staircase prefabricated reinforced concrete fire barrier structure, is made up of prefabricated reinforced concrete fire barrier 1, precast concrete stair 8, staircase half space beam 10 and connector 11; Both sides, prefabricated reinforced concrete fire barrier 1 top have dividing plate to choose ear 2, and dividing plate is chosen in ear 2 and is covered with one deck and chooses ear reinforcing bar 3, and prefabricated reinforced concrete fire barrier 1 chooses by the dividing plate of both sides the end face that ear 2 is hung on staircase half space beam 10; Prefabricated reinforced concrete fire barrier 1 is connected with described precast concrete stair 8 bolt by connecting angle (connector 11).

Be embedded with dividing plate built-in fitting 4, built-in hanger 5 and demoulding hanging piece 6 in prefabricated reinforced concrete fire barrier 1, and be covered with one deck dividing plate reinforcing bar 7.

Stair built-in fitting 9 is embedded with in precast concrete stair 8.Position is mutually corresponding in the horizontal and vertical directions for dividing plate built-in fitting 4 in prefabricated reinforced concrete fire barrier 1 and the stair built-in fitting 9 in described precast concrete stair 8.

The concrete material of prefabricated reinforced concrete fire barrier 1 can be ordinary concrete, haydite concrete or gas concrete.

A construction for prefabricated reinforced concrete fire barrier structure, comprises the steps:

Step one, build staircase half space beam 10 or lifting prefabricated staircase half space beam 10 make it in place;

Step 2, lifting inner side precast concrete stair 8, make it in place;

Step 3, hoisting prefabricated reinforced concrete fireproof dividing plate 1, fire barrier chooses by the dividing plate of both sides the end face that ear 2 is hung on staircase half space beam 10;

Step 4, with connecting angle prefabricated reinforced concrete fire barrier 1 to be bolted with inner side precast concrete stair 8 together with and adjust position and the verticality of prefabricated reinforced concrete fire barrier 1;

Precast concrete stair 8 outside step 5, lifting also makes it in place;

Step 6, with connecting angle prefabricated reinforced concrete fire barrier 1 to be bolted with outside precast concrete stair 8 together with, fire barrier is fixed on the precast concrete stair 8 of outside;

Step 7, last, plate seam is in the milk and performs fireproof blocking, completes the installation of prefabricated reinforced concrete fire barrier 1.

Claims

1. a staircase prefabricated reinforced concrete fire barrier structure, is characterized in that,

Described structure is made up of prefabricated reinforced concrete fire barrier (1), precast concrete stair (8), staircase half space beam (10) and connector (11); Described prefabricated reinforced concrete fire barrier (1) both sides, top have dividing plate to choose ear (2), dividing plate is chosen in ear (2) and is covered with one deck and chooses ear reinforcing bar (3), and described prefabricated reinforced concrete fire barrier (1) chooses by the dividing plate of both sides the end face that ear (2) is hung on staircase half space beam (10); Prefabricated reinforced concrete fire barrier (1) is fixedly connected with described precast concrete stair (8) by connector (11).

2. fire barrier structure according to claim 1, is characterized in that, be embedded with dividing plate built-in fitting (4), built-in hanger (5) and demoulding hanging piece (6), and be covered with one deck dividing plate reinforcing bar (7) in described prefabricated reinforced concrete fire barrier (1).

3. fire barrier structure according to claim 1, is characterized in that, be embedded with stair built-in fitting (9) in described precast concrete stair (8).

4. the staircase prefabricated reinforced concrete fire barrier structure according to claim 2 and 3, it is characterized in that, position is mutually corresponding in the horizontal and vertical directions for the dividing plate built-in fitting (4) in described prefabricated reinforced concrete fire barrier (1) and the stair built-in fitting (9) in described precast concrete stair (8).

5. prefabricated reinforced concrete fire barrier structure according to claim 1, it is characterized in that, described connector (11) is connecting angle, and connecting angle is connected with described precast concrete stair (8) bolt.

6. prefabricated reinforced concrete fire barrier structure according to claim 1, it is characterized in that, the concrete material of described prefabricated reinforced concrete fire barrier (1) can be ordinary concrete, haydite concrete or gas concrete.

7. a construction for prefabricated reinforced concrete fire barrier structure, is characterized in that, comprise the steps:

Step one, build or lift staircase half space beam (10);

Step 2, lifting inner side precast concrete stair (8);

Step 3, hoisting prefabricated reinforced concrete fireproof dividing plate (1);

Step 4, with connector (11) prefabricated reinforced concrete fire barrier (1) to be bolted with inner side precast concrete stair (8) together with and adjust position and the verticality of prefabricated reinforced concrete fire barrier (1);

Step 5, lifting outside precast concrete stair (8);

Step 6, with connector (11) prefabricated reinforced concrete fire barrier (1) to be bolted with outside precast concrete stair (8) together with;

Step 7, last, plate seam is in the milk and performs fireproof blocking.