The new ringlock system scaffolding has the outstanding features of multi-functionality, large bearing capacity and reliability, which is widely used in the fields of roads, bridges, water conservancy and hydropower projects, municipal projects, industrial and civil construction projects.
In recent years, there have been more new type of all round scaffolding professional construction contracting companies in China, mainly based on scaffolding supply, erection and removal, recycling integrated management. Whether from the cost analysis, construction progress and on, have a better economic benefits.
1.The design of ringlock system scaffolding
Take the bridge full scaffolding erection method as an example, the ringlock scaffolding is designed in such a way that it is erected from the ground elevation after processing, up to under the box girder, with double aluminum alloy I-beams laid on top as the main keel of the girder, laid in the cross-bridge direction, with the arrangement spacing of: 600mm, 900mm, 1200mm, 1500mm.
2.The analysis of the characteristics for ringlock scaffolding
1）Versatility
According to the construction requirements of the site, it can be composed of different rented frame size, shape and bearing capacity of single and double rows of scaffolding, support frame, support column and other multi-functional construction equipment.
2）High efficacy
Simple construction, easy and fast disassembly and assembly, completely avoiding the loss of bolt work and scattered fasteners, the speed of joint assembly and disassembly is more than 5 times faster than that of ordinary bowl buckle scaffolding, using less manpower for assembly and disassembly, and workers can complete all operations with a hammer.
3）High load-bearing capacity
The joint has bending, shearing and torsional mechanical properties, stable structure, high load bearing capacity and large spacing compared with ordinary scaffolding on the same mechanical requirements, saving the amount of steel pipe material.
4）Safe and reliable
The joint design takes into account the effect of self-gravity, so that the joint has a reliable two-way self-locking function, and the load acting on the crossbar is transferred to the upright rod through the disc buckle, which has a strong shear resistance.
3. The cost analysis of ringlock scaffolding
For example: the designed scaffolding volume of the double width bridge is 31668㎥, and the construction period from the start of erection to the start of dismantling is 90 days.
1)Cost composition
Variable cost for 90 days, scaffolding rental cost is CNY572,059, extension according to 0.25 yuan/day/m3; fixed cost is CNY495,152; management fee and profit is CNY109,388; tax is CNY70,596, the total cost is CNY1247,195.
2)Risk analysis
(1)The extension cost is 0.25 Yuan/day/cubic meter, there is the risk of project time,
(2) The risk of material damage and loss, Party A pays the professional contracting company for the cost of caretakers, the risk is transferred to the professional contracting company.
(3) The professional contracting company needs to carry out the corresponding mechanical properties, bearing capacity and other calculation analysis according to the actual situation of the project, and the erection plan design needs to be approved by Party A to effectively control the safety risk of scaffolding frame bearing capacity.
4.The cost analysis of cuplock scaffolding
1)Cost composition
The material rental cost is 702,000 yuan (90 days), the labor cost (including the cost of erection and dismantling, etc.) is 412,000 yuan, and the machinery cost (including transportation) is 191,000 yuan, totaling 1,305,000 yuan.
2)Risk analysis
(1) the risk of time extension, material leasing extension is still charged in accordance with the unit price of leasing 4 yuan / T / day,
(2) Risk of material damage and loss, mainly reflected in the damage and loss of ordinary scaffolding rental period.
(3) progress risk, the use of ordinary scaffolding, between the row distance is small, slow erection and dismantling, Wangwang needs a lot of manpower input, affecting the subsequent construction progress.
(4) safety risk, the use of large, small spacing characteristics determine the scaffolding frame fasteners, cross parts, mechanical stability is not easy to control, often requires a large number of reinforcement measures, such as increased crossbars, diagonal bars, etc., is not conducive to safety acceptance and stability control.
5.The analysis of results and the analysis of ringlock scaffolding’s economic benefits
1, the overall savings in construction costs, from the above analysis it is easy to see that the new coil buckle support scaffolding costs cheaper than ordinary scaffolding, and the cost is more controllable. In the actual construction site of the project, reasonable organization will be more to the cooperation of both sides to bring benefits.
2, to further accelerate the project construction progress, in large scaffolding, large span, high support projects are particularly prominent, erection, removal speed to the main project construction to win time.
3, Wider spacing, large bearing capacity, convenient on-site construction, the frame does not affect the manual work, scientific design calculations are safe is an effective guarantee of construction.
4, Q355B ringlock standard and Q235 ringlock ledger composed of full scaffolding arranged in an orderly manner, small deviation, silver white stainless steel galvanized appearance makes the overall appearance of the frame beautiful.
Post time: Oct-26-2022
