CN102852334A

CN102852334A - Construction technology for high-rise anti-slippage scaffold

Info

Publication number: CN102852334A
Application number: CN2012103674736A
Authority: CN
Inventors: 陈如华; 师永生
Original assignee: JIANGSU HONGSHENG CONSTRUCTION ENGINEERING GROUP Co Ltd
Current assignee: JIANGSU HONGSHENG CONSTRUCTION ENGINEERING GROUP Co Ltd
Priority date: 2012-09-27
Filing date: 2012-09-27
Publication date: 2013-01-02
Anticipated expiration: 2032-09-27
Also published as: CN102852334B

Abstract

The invention discloses a construction technology for a high-rise anti-slippage scaffold, which relates to the technical field of a high-rise shearing wall structure scaffold. After a first group of scaffold is erected to a designed height, a second group of scaffold is erected on a lower layer of builder jack; the second group of scaffold and the first group of scaffold are erected in a separation mode; the second group of scaffold is higher than a floor of an overhanging layer structure; and after one layer of structure above the overhanging layer is constructed, I steel is enabled to extend out, and the second group of scaffold falls on the I steel. According to the construction technology for the high-rise anti-slippage scaffold, which is disclosed by the invention, factors, such as the days for construction, turnover material, cost, civilized construction and reduction of damage to the template are comprehensively considered. The construction technology for the high-rise anti-slippage scaffold has the characteristics of short days for construction, turnover material saving, safety, reliability and convenience in quality control.

Description

High-rise antiskid scaffold construction technique

Technical field

The present invention relates to a kind of job practices of building operations scaffold, special technical field of construction for the Tall Shear Wall Structures scaffold.

Background technology

Along with further going deep into of urbanization, urban architecture is towards high-rise Super High future development.Outer shelf is the important safeguard structure in the building construction process, suspension scaffold routinely, whenever encorbelment once by 6 layers (about 18m), after scaffold arrives 18 meters height, until this floor face structural concrete build finish and reach some strength after, stretch out i iron from flooring, fixedly root, set up scaffold at the end of encorbelmenting, carry out again the construction of floor structure.Execute more than existing that the formula method is long in time limit, consumables cost is high, danger is large, be unfavorable for safety, low consumption production.

Summary of the invention

The present invention seeks to propose a kind of high-rise antiskid scaffold construction technique that is beneficial to safety, low consumption production.

Technical solution of the present invention is: after first group of scaffold building arrives design height, set up second group of scaffold at lower floor's builder's jack, described second group of scaffold and first group of scaffold are separate type to be set up, and described second group of scaffold is higher than overhang layer structure flooring; After overhang layer is complete with the last layer structure construction, stretch out i iron, described second group of scaffold fallen on the i iron.

The present invention considers duration, all materials, cost, civilized construction, reduces the factors such as destruction to template, and its characteristics that have are:

1, the duration is short: scaffold construction does not take the duration of agent structure, improves to greatest extent speed of application, compares with first builder's jack, whenever encorbelments and once can save 3 days durations.

2, circulation material is economized: compare the shelf of encorbelmenting with the console mode shelf and once only choose 6 layers, greatly reduced consumption and the expense of steel pipe isoperimetric material.

3, safe and reliable: when any floor structure construction, scaffold can guarantee to surpass construction layer one deck, has guaranteed the safety of structure construction.

4, be convenient to quality control: when scaffold is encorbelmented operation at every turn, not affected by the concrete strength growth rate of flooring anchoring i iron.Outer wall template is constructed first, at reserved opening within the walls, does not destroy template, guarantees the external wall construction quality.Choosing i iron outward is rear stretching type, has reserved first the hole, when choosing i iron outside removing, and can be because of concrete bonding can't the dismounting.

In addition, scaffold of the present invention can utilize the scaffold supporting upper falsework that lower floor's (bottom) has set up before the i iron of this step builder's jack does not stretch out.Because builder's jack relies on lower floor's scaffold supporting when setting up, can not delay the duration, directly upwards sets up.When the scaffold conversion layer, do not take the duration.After the overhang layer outer wall template is removed, stretch out i iron and fixing in floor, the scaffold that then will set up falls, by this i-steel supporting.Because stretch out wall face behind the i iron, i iron can not pass outer wall template, avoided punching and affecting reusing of outer wall template at outer wall template.Owing to stretch out behind the i iron, place floor concrete length of time of i iron about 7 days, avoid the crack occurring because of the stressed floor concrete structure that makes of anchoring.

Displacement when preventing that the upper strata scaffold from falling before second group of scaffold falls, penetrates from bottom to top a reinforcing bar in the lower end of the vertical rod of second group of scaffold corresponding to each i iron, and each reinforcing bar and i iron is welded.Shelf can only fall towards i iron along the direction of welding stud in dropping process like this, is unlikely off normal.

Description of drawings

Fig. 1 is process chart of the present invention.

Fig. 2 is for arranging the schematic diagram of reinforcing bar.

The specific embodiment

One, technological process

1, technological process is: location unwrapping wire, material and technology are prepared, are set up the upper strata scaffold, frame falls.See Fig. 1 for details.

2, put the location: mark upper strata scaffold upright rod drawing of site at former scaffold, at vertical rod counter structure body of wall position, reserved opening is convenient to stretch out i iron.Reserved opening 200*200.

3, set up the upper strata scaffold at lower floor's scaffold, do not affect the construction speed of floor structure.

4, in floor, stretch out i iron, the rear end anchoring, and the upper strata scaffold fallen.

5, displacement when preventing that the upper strata scaffold from falling, before the upper strata scaffold falls, the reinforcing bar of the Φ 22 that to penetrate from bottom to top a length in upper strata scaffold upright rod corresponding to each i iron be 30cm, and with the lower end of every reinforcing bar and accordingly i iron welding, shelf is in dropping process like this, can only fall towards i iron along the direction of welding steel muscle, be unlikely off normal.

Two, key points for operation

1, encorbelment and begin upwards to set up after shelf reaches 18 meters from encorbelmenting, absolute altitude is higher than 0.36 meter of floor structure that i iron stretches out at the bottom of the vertical rod.Longitudinal pitch≤1.8 meter, 1.1 meters of transfers, 1.8 meters of step pitches.

2, vertical rod is equidistantly to directly, and the joint docking is staggered, and not in same step pitch, vertical vertical rod is satisfied the structure construction requirement apart from wall.

3, vertical rod is kept a foothold on lower floor's support body, the i iron that stretches out after the correspondence.

4, it is straight that cross bar is set up need, and overlap joint meets the requirements.

5, for guaranteeing the stability of support body, the 18 meters support bodys in its underpart are striden the company's of setting wall point by two steps two, and do gun iron link, and the support body more than 18 meters need move down into the i iron end face after i iron stretches out, and it connects wall point and does temporarily and flexibly connect.

6, turn to beginning that bridging is set one every about 8 meters from the end, 45 °～60 ° of bridging horizontal sextant angle degree arrange from lower to upper continuously, the joint lap length is greater than 1000 ㎜, be no less than three fasteners and fix, stretch out the fastener part greater than 100 ㎜, the bridging infall buckles with fastener.

7, encorbelment and establish the bar of sweeping the floor at the bottom of the outer shelf, the bar of sweeping the floor is communicated with and arranges, apart from channel-section steel 150～200 ㎜. and the every row of vertical equity bar (leger) is four.

8, the shelf outside mat woven of fine bamboo strips one has gone on foot and has established the high protective guard of 1000 ㎜ and the high skirt bar of 400 ㎜, top row's protective guard is no less than two roads, highly be respectively 1300 ㎜, 900 ㎜, 400 ㎜, protective guard is higher than operation side or more than cornice 1500 ㎜, per pass flak jacket railing and skirt bar are communicated with setting, do not stay gap.

9, the bamboo fragrant plant is connected firmly with 16# galvanized wire and cross bar, and the shelf outside connects with the large order safety net of the every alternating floor setting of main body with Dense mesh screen sealing, shelf inboard, prevents that object from falling.Bamboo fragrant plant plate is taked every full shop of step, and bottom must completely spread.

10, scaffold is set up according to facade shape and situation attractive in appearance.

11, this outrigger is the high-level structure construction scaffolding, mainly plays protective action.

Claims

1. high-rise antiskid scaffold construction technique, it is characterized in that: after first group of scaffold building arrives design height, set up second group of scaffold at lower floor's builder's jack, described second group of scaffold and first group of scaffold are separate type to be set up, and described second group of scaffold is higher than overhang layer structure flooring; After overhang layer is complete with the last layer structure construction, stretch out i iron, described second group of scaffold fallen on the i iron.

2. described high-rise antiskid scaffold construction technique according to claim 1, it is characterized in that: before second group of scaffold falls, lower end in the vertical rod of second group of scaffold corresponding to each i iron penetrates a reinforcing bar from bottom to top, and with each reinforcing bar and i iron welding.