Reverse construction method of reversely nailed wood rafter roof boarding of concrete eave of pseudo-classic architecture

An antique building and concrete technology, applied in the direction of building, building structure, roof, etc., can solve the problem of difficult to achieve satisfactory results, and achieve the effect of improving the construction environment of workers, obvious environmental protection benefits, and increasing the safety factor.

Inactive Publication Date: 2012-07-11
江苏金土木建设集团有限公司 +1
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AI-Extracted Technical Summary

Problems solved by technology

The charm of the antique building is mainly reflected in the corners of the cornices. The general design is to nail the wooden rafters under the concrete roof slab. The traditional concrete structure construction method is to form the cast-in-place concrete r...
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The invention discloses a construction method. The flow process of the construction method includes construction preparation; framed bent building; field lofting; installation of wood components including wood rafters, flying rafters and the like; pavement of cement pressure plates; binding of reinforcing steel bars; concreting; maintenance; and framed bent detachment. Traditional woodworking process is combined with modern materials, a steel tube framed bent is used as a support, the finished wood rafters and the finished cement pressure plates are used as mold plates, the reinforced steel bars are bound, roof concrete plates are poured, field lofting of eaves including rafters and flying rafters at corners is realized by the aid of traditional process, the wood components are mounted in advance, the special style of a traditional building is guaranteed, and engineering quality is ensured.

Application Domain

Technology Topic

Steel tubeRafter +8


  • Experimental program(1)

Example Embodiment

[0025] The construction technological process of construction method of the present invention is:
[0026] Construction preparation → erection of bent frames → actual setting out → installation of wooden components such as wooden rafters and flying rafters → laying of cement pressure plates → steel bar binding → pouring concrete → maintenance → removal of bent frames. The specific steps are:
[0027] (1) Carry out lofting according to the design requirements, and process wooden components according to the requirements: wooden components such as wooden rafters, flying rafters, inner wood and even eaves, determine the elevation and extension of the eaves, tender girts, and old girts, and determine the cornice brackets Erection height and width;
[0028] (2) Carry out the construction of the supporting bent frame according to the erecting position determined in the lofting diagram, the supporting bent frame is erected with steel pipes, and the wooden rafters are erected on the steel pipe bent frame; the supporting bent frame is erected with φ48×3.0~3.5 steel pipes, A 50mm×100mm wooden beam is erected on the steel pipe bent frame to support the wooden rafters.
[0029] (3) According to the elevation and extension of the young and old corners determined in the lofting diagram, the physical curves of the corners are determined at the construction site using traditional woodwork installation techniques.
[0030] (4) Install wooden structures such as wooden rafters, flying rafters and inner wood on the erected bent frames.
[0031] (5) Fix the whole piece of cement pressure plate with suitable width on the straight section to the wooden rafters with self-tapping screws, use small pieces of cement pressure plate to splice the wing angle part, and fill the gap with adhesive tape; Nail three galvanized marine iron nails on each rafter, one of the nails is on the top of the rafter, and the nail cap is exposed to the cement pressure plate by 2-5cm. When nailing, a pistol drill should be used to drill pilot holes on the cement pressure plate so Because nails are easier to nail into the cement pressure plate, and the cement pressure plate will not be damaged.
[0032] According to the eaves of 2m, the cement pressure plate and the 30cm wide rafters of the wooden structure have a self-weight of 18kg. The test shows that the pull-out force of a φ3.7×90mm iron nail is 120kg.
[0033] The cement pressure plate is 5 mm thick, the transverse flexural strength is 22-28 (mpa), the longitudinal flexural strength is 17-20 (mpa), and the impact strength is 2.0-2.5 (kN/m 2 ), density 1700~1900(kg/m 3 ).
[0034] (6) Bind the steel bars as required, pad the protective layer pads, and pad the pads on the wooden rafters.
[0035] (7) Concrete pouring, the concrete is generally poured with commercial concrete; generally, the demoulding test block should be left in this step for use in the subsequent steps.
[0036] If self-mixing concrete is used for pouring, it is necessary to set up concrete pouring scaffolds and runways. The slump of the concrete is required to be controlled at about 5-7cm. When pouring, pay attention to the concrete to be spread evenly. When vibrating, the beam should be vibrated with an inserted vibrator , the board is vibrated with a flat vibrator.
[0037] (8) After the concrete pouring is completed, cover the plastic film or spray the concrete curing agent, and then remove the bent frame; at this time, the timing of removing the bent frame can be carried out according to the concrete of the demoulding test block reaching the demolition strength.
[0038] This construction method organically combines the traditional construction technology of ancient buildings with the use of modern materials. On the one hand, it improves the construction environment for operators, and at the same time ensures the visual effect of antique buildings.
[0039] Through the use of new materials, this construction method saves wood, reduces construction procedures, and shortens the construction period. The one-story eaves can shorten the construction period by 7 days.
[0040] The cement pressure board used in this construction method is a high-density board, and its color is similar to that of the Qingshui Wangban. After marking the board surface, the effect of the Qingshui Wangban can be achieved.
[0041] The above embodiments do not limit the present invention in any way, and all technical solutions obtained by means of equivalent replacement or equivalent transformation fall within the protection scope of the present invention.
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the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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