阅读说明：本技术 大角度坡屋面砼浇筑的方法 (Method for pouring concrete on large-angle sloping roof ) 是由 金以超 周超 于 2019-10-23 设计创作，主要内容包括：本发明公开了大角度坡屋面砼浇筑的方法,包括以下步骤：搭建屋面模板支撑体系；固定模板；在坡屋面板两侧分别各自安装槽钢导轨；在坡屋面的下屋檐布置钢模,钢模的上侧面固定拉索,在屋脊处安装手拉葫芦,拉索与手动葫芦连接,钢模与钢槽导轨卡合；在钢模中心安装振捣器,并在振捣器两侧的钢模上安装配重块；将钢模下降到坡屋面的的下屋檐,在坡屋面上从下到上浇筑混凝土,在浇筑混凝土的坡屋面上将钢模向上拉,钢模上升过程中,振捣器对混凝土进行振捣,清除混凝土中的气泡,将混凝土压实,并在压实后表面的坑洼处填补混凝土,并再次振捣压实,直到混凝土表面平整。本发明使混凝土的成型及平整度得到有效控制,密实度好,不需后期的找补和维修。(The invention discloses a method for pouring concrete on a large-angle sloping roof, which comprises the following steps: building a roof template supporting system; fixing the template; channel steel guide rails are respectively arranged on two sides of the sloping roof plate; arranging a steel mould on the lower eave of the pitched roof, fixing a pull rope on the upper side surface of the steel mould, installing a chain block at the ridge, connecting the pull rope with the chain block, and clamping the steel mould with a steel groove guide rail; installing a vibrator in the center of the steel die, and installing balancing weights on the steel die on two sides of the vibrator; the method comprises the following steps of descending a steel die to a lower eave of a sloping roof, pouring concrete on the sloping roof from bottom to top, pulling the steel die upwards on the sloping roof where the concrete is poured, vibrating the concrete by a vibrator in the ascending process of the steel die, removing air bubbles in the concrete, compacting the concrete, filling the concrete in a hollow part on the surface of the compacted concrete, and vibrating and compacting again until the surface of the concrete is flat. The invention effectively controls the forming and the flatness of the concrete, has good compactness and does not need later repair and maintenance.)

1. The method for pouring the concrete on the large-angle sloping roof is characterized by comprising the following steps of: the method comprises the following operation steps:

step 1: building a roof template supporting system: building a full-hall steel pipe scaffold below the large-angle sloping roof, laying a template above the full-hall steel pipe scaffold, brushing an isolating agent on the upper surface of the template, and sticking an adhesive tape at a splicing gap of adjacent templates;

step 2: fixing the template: binding the template and the scaffold steel bars at the contact position of the template and the scaffold, and fixing the template and the scaffold;

and step 3: installing a track: channel steel guide rails are respectively arranged on two sides of the sloping roof plate, the channel steel guide rails extend from the edge of the bottom of the sloping roof to a ridge, the channel steel guide rails are parallel to the vertical section of the sloping roof, supporting cushion blocks are padded below the channel steel guide rails, the supporting cushion blocks are uniformly distributed along the extending direction of the channel steel guide rails,

and 4, step 4: arranging a steel die: arranging a steel die on the lower eave of the pitched roof, wherein the length of the steel die is consistent with that of the lower eave of the pitched roof, fixing a pull rope on the upper side surface of the steel die, installing a chain block at the ridge, connecting the pull rope with a hand block, rolling up the pull rope by the hand block, pulling the steel die to ascend along the pitched roof, sliding the steel die from the upper end of the slope to the lower end of the slope along a channel steel groove, clamping the two ends of the steel die with a channel steel guide rail, enabling the opening of the channel steel guide rail to face the steel die, and placing the end part of the steel die in the channel steel guide rail;

and 5: installing a vibrator: installing a vibrator in the center of a steel mould, installing balancing weights on the steel moulds on two sides of the vibrator, vibrating and compacting concrete by the vibrator, filling and paving, matching the balancing weights with the steel moulds, and pressurizing a sloping roof;

step 6: pouring concrete: the method comprises the following steps of descending a steel die to a lower eave of a sloping roof, pouring concrete on the sloping roof from bottom to top, pulling the steel die upwards on the sloping roof where the concrete is poured, vibrating the concrete by a vibrator in the ascending process of the steel die, removing air bubbles in the concrete, compacting the concrete, filling the concrete in a hollow part on the surface of the compacted concrete, and vibrating and compacting again until the surface of the concrete is flat.

2. The method for pouring the concrete on the large-angle sloping roof as claimed in claim 1, wherein: in the step 6, concrete is poured on the sloping roof in a segmented mode, from bottom to top, a section of concrete with equal height is poured firstly, namely, the hand-operated hoist and the vibrator are started, the steel die is lifted upwards, when the section of concrete is lifted to the position close to the upper edge of the poured concrete, the steel die is stopped to be lifted, the concrete with equal height is poured continuously, and then the steel die is started to be lifted again until the concrete is poured to the top of the sloping roof.

3. The method for pouring the concrete on the large-angle sloping roof as claimed in claim 1, wherein: in the step 4, when the width of the slope roof is large, the steel die is formed by splicing a plurality of sections of steel die sections, each section of steel die section is at least provided with a vibrator, and the horizontal two sides of each vibrator are provided with balancing weights.

4. The method for pouring the concrete on the large-angle sloping roof as claimed in claim 2, wherein: every section all be provided with a pull ring in the middle of the side of going up of steel mould section, the corresponding top of every pull ring all is provided with a chain block, and pull ring and chain block are connected to the cable, and the cable is parallel with the channel-section steel guide rail.

Technical Field

The invention relates to a method for pouring concrete on a large-angle sloping roof, belonging to the technical field of building construction.

Background

With the rapid development of the real estate industry, the competition is more and more fierce, and in order to bring the popularity of the building to the eyes of consumers, developers are continuously innovated on the design theme and the development effect of engineering projects, so that the architectural style of the product is taken as the core element of the product.

In recent years, many developers are interested in European style building styles, the slope of the roof structure in the building form is generally larger than 60 degrees, and meanwhile, the roof structure is more complex, the number of detail nodes is more, and the construction difficulty is higher. In order to ensure the consistency of the roof shape and the design effect, the construction of the roof must strictly control the elevation of various details such as roof boards, beams and the like. In the construction, the control of the concrete pouring quality of the cast-in-situ sloping roof and the treatment of the plane position and elevation of the beam and plate nodes are particularly required to be paid attention to.

In addition, because the roof boarding slope is great, the concrete is very difficult to the shaping, pour the quality and is difficult to guarantee. At present, no mature structure with good application effect suitable for large-angle sloping roof concrete pouring exists.

Disclosure of Invention

In order to solve the technical problem, the invention discloses a method for pouring concrete on a large-angle sloping roof, which has the following specific technical scheme:

the method for pouring the concrete on the large-angle sloping roof comprises the following operation steps:

step 1: building a roof template supporting system: building a full-hall steel pipe scaffold below the large-angle sloping roof, laying a template above the full-hall steel pipe scaffold, brushing an isolating agent on the upper surface of the template, and sticking an adhesive tape at a splicing gap of adjacent templates;

step 2: fixing the template: binding the template and the scaffold steel bars at the contact position of the template and the scaffold, and fixing the template and the scaffold;

and step 3: installing a track: channel steel guide rails are respectively arranged on two sides of the sloping roof plate, the channel steel guide rails extend from the edge of the bottom of the sloping roof to a ridge, the channel steel guide rails are parallel to the vertical section of the sloping roof, supporting cushion blocks are padded below the channel steel guide rails, the supporting cushion blocks are uniformly distributed along the extending direction of the channel steel guide rails,

and 4, step 4: arranging a steel die: arranging a steel die on the lower eave of the pitched roof, wherein the length of the steel die is consistent with that of the lower eave of the pitched roof, fixing a pull rope on the upper side surface of the steel die, installing a chain block at the ridge, connecting the pull rope with a manual block, rolling up the pull rope by the manual block, pulling the steel die to ascend along the pitched roof, and clamping two ends of the steel die with a steel groove guide rail;

and 5: installing a vibrator: installing a vibrator in the center of a steel mould, installing balancing weights on the steel moulds on two sides of the vibrator, vibrating and compacting concrete by the vibrator, filling and paving, matching the balancing weights with the steel moulds, and pressurizing a sloping roof;

step 6: pouring concrete: the method comprises the following steps of descending a steel die to a lower eave of a sloping roof, pouring concrete on the sloping roof from bottom to top, pulling the steel die upwards on the sloping roof where the concrete is poured, vibrating the concrete by a vibrator in the ascending process of the steel die, removing air bubbles in the concrete, compacting the concrete, filling the concrete in a hollow part on the surface of the compacted concrete, and vibrating and compacting again until the surface of the concrete is flat.

Further, in the step 6, concrete is poured to the pitched roof in a segmented manner, from bottom to top, a section of concrete with equal height is poured firstly, namely, the hand-operated hoist and the vibrator are started, the steel die is lifted upwards, when the section of concrete is lifted to the position close to the upper edge of the poured concrete, the steel die is stopped to be lifted, the concrete with equal height is continuously poured, and then the steel die is started to be lifted again until the concrete is poured to the top of the pitched roof.

Further, in step 4, when the sloping roof width is great, the steel mould is formed by splicing a plurality of sections of steel mould sections, each section of steel mould section is at least provided with a vibrator, and the horizontal two sides of each vibrator are provided with balancing weights.

Furthermore, each section all is provided with a pull ring in the middle of the side of going up of steel mould section, and the top that corresponds of every pull ring all is provided with a chain block, and pull ring and chain block are connected to the cable, and the cable is parallel with the channel-section steel guide rail.

The working principle of the invention is as follows:

the invention pours concrete in sections from the lower eave of the large-angle sloping roof to the upper part, and when pouring a section of concrete (from the lower part to the upper part along the sloping roof), the hand-operated hoist is started to pull the steel die upwards, the vibrator discharges air in the concrete at the position where the steel die passes, and the concrete is filled on the non-smooth surface, so that the surface of the concrete is flat, and the balancing weight compresses the concrete. Preventing the concrete from slipping in the building process.

The invention has the beneficial effects that:

the invention has strong operability, the steel groove guide rails on two sides of the large-angle sloping roof limit the traveling path of the steel die, the steel die is compacted on the concrete in the process of lifting and pulling the steel die, and the vibrator and the balancing weight on the steel die can compact and tamp the concrete.

The method for pouring the concrete on the large-angle sloping roof can effectively control the forming and the flatness of the concrete, has good compactness, simple and easy assembly, understandable operation, simple fixing measures, material saving and labor saving, and does not need later repair and maintenance.

Drawings

Figure 1 is a front view of the present invention,

figure 2 is a cross-sectional view a-a of figure 1,

figure 3 is a cross-sectional view B-B of figure 1,

reference numerals: the steel die comprises a chain block 1, a pull rope 2, a pull ring 3, a steel die 4, a channel steel guide rail 5, a counterweight block 6, a vibrator 7, a support cushion block 8 and a bottom die 9.

Detailed Description

The present invention is further illustrated by the following figures and specific examples, which are to be understood as illustrative only and not as limiting the scope of the invention, which is to be given the full breadth of the appended claims and any and all equivalent modifications thereof which may occur to those skilled in the art upon reading the present specification.

As shown in figure 1, the method for pouring the concrete on the large-angle sloping roof comprises the following operation steps:

step 1: building a roof template supporting system: building a full-hall steel pipe scaffold below the large-angle sloping roof, laying a template above the full-hall steel pipe scaffold, brushing an isolating agent on the upper surface of the template, and sticking an adhesive tape at a splicing gap of adjacent templates;

the method specifically comprises the following steps: the roof formwork support system adopts phi 48 multiplied by 3.5mm welded steel pipes to build a full steel pipe scaffold, the main edges of the beam bottom and the slab bottom adopt phi 48 multiplied by 3.5mm steel pipes, the fasteners are adopted to be firmly connected with the supporting scaffold, the secondary edges adopt 50 x 100 wood beams, and 12 # iron wires (2.642mm) are firmly bound with the main edges to prevent sliding, the formwork adopts a thick plywood with the thickness of 18mm, the plate surface is flat, no warping deformation and no cracking and delaminating occur, and iron nails are adopted to nail the secondary edges on the wood side.

Step 2: fixing the template: binding the template and the scaffold steel bars at the contact position of the template and the scaffold, and fixing the template and the scaffold;

the method specifically comprises the following steps: the longitudinal and transverse ribs of the board surface are bound after being strung to ensure that the space is even. The bottom ribs and the wall ribs are in specifications according to the drawing, the space is uniform, the vertical and horizontal straight ribs are perpendicular to each other, the arc ribs are round and smooth, and the wall ribs are horizontal and vertical.

And step 3: installing a track: install the channel-section steel guide rail separately respectively in sloping roof plate both sides, the channel-section steel guide rail extends to the ridge from the bottom edge of sloping roof, and the channel-section steel guide rail is parallel with the vertical section of sloping roof, and the below of channel-section steel guide rail has cushioned lip block 8, lip block 8 along the extending direction evenly distributed of channel-section steel guide rail, and lip block 8 lays on the die block 9 on roof.

And 4, step 4: arranging a steel die 4: arranging a steel die 4 on the lower eave of the pitched roof, wherein the length of the steel die 4 is consistent with that of the lower eave of the pitched roof, fixing a guy rope 2 on the upper side surface of the steel die 4, installing a chain block at the ridge, connecting the guy rope 2 with a manual block 1, rolling up the guy rope 2 by the manual block 1, pulling the steel die 4 to ascend along the pitched roof, and clamping two ends of the steel die 4 with a steel groove guide rail 5;

when the sloping roof width is great, steel mould 4 is formed by the concatenation of multistage steel mould section, all is provided with a vibrator 7 on every section steel mould section at least, and every vibrator 7's horizontal both sides all are provided with balancing weight 6, every section all be provided with a pull ring 3 in the middle of the side of going up of steel mould section, every pull ring 3's the top that corresponds all is provided with a chain block 1, and pull ring 3 and chain block are connected to cable 2, and cable 2 is parallel with the channel-section steel guide rail.

And 5: installing a vibrator 7: installing a vibrator 7 at the center of the steel die 4, installing balancing weights 6 on the steel die 4 at two sides of the vibrator 7, vibrating and compacting concrete by the vibrator 7, filling and paving, matching the balancing weights 6 with the steel die 4, and pressurizing a sloping roof;

step 6: pouring concrete: the steel die 4 is lowered to the lower eave of the sloping roof, a section of concrete with equal height is poured at first, namely, the hand-operated hoist 1 and the vibrator 7 are started, the steel die 4 is lifted upwards, when the section of concrete is lifted to the position close to the upper edge of the poured concrete, the steel die 4 is stopped to be lifted, the concrete with equal height is continuously poured, then the steel die 4 is started again to be lifted until the concrete is poured to the top of the sloping roof, in the lifting process of the steel die 4, the vibrator 7 vibrates the concrete, bubbles in the concrete are removed, the concrete is compacted, the concrete is filled in pits on the compacted surface, and the concrete is compacted again until the surface of the concrete is flat.

Pouring concrete, opening the vibrator 7, slowly lifting the steel mould 4, and smearing along with lifting (secondary smearing), wherein the cornice and the lower opening of the inclined ridge are poured firstly in the construction process and are gradually carried out from bottom to top.

The method of the present invention in the practice of the present invention is more fully described below:

the method is that firstly, steel bars are bound on the wood formwork of the bottom layer of the paved sloping roof.

According to the trend of the sloping roof, channel steel guide rails are respectively arranged at two ends of the sloping roof along the direction from the sloping bottom to the sloping top and are firmly fixed, the steel die 4 is assembled and combined, sealing rubber strips are adopted at the assembling gaps of the steel die 4 for plugging, leakage is prevented, two ends of the steel die 4 are placed in channel steel notches of corresponding ends, referring to fig. 3, the opening of the steel slot guide rail 5 faces the steel die 4, and the end part of the steel die 4 is just placed in the opening of the steel slot guide rail 5.

Influenced by the roof reinforcing mesh, the concrete flowability is insufficient, the once blanking is not too much during the concrete pouring, and the blanking width is not more than the length of the steel die 4. The construction characteristics of the pitched roof are combined, the small-sized inserted vibrating bar is adopted for vibration, the material is discharged while the vibration is carried out, the concrete is preferably not sunk and overflowed, and the compactness of the concrete is ensured.

And then, in the pouring process, the steel die 4 is slowly slid and lifted by using a chain block, the sliding and lifting height of the steel die 4 is preferably calculated by 30-40cm once by using the inclined length, the steel die 4 is ensured to be lifted in a correct and reasonable time, and the construction quality is ensured. Because the roof slope is great, concrete slump controls at 50 ~ 70mm, should not too big yet. The slump is large, the concrete is not easy to form, and the concrete flows after being slightly vibrated, so that the pouring thickness cannot be controlled; the slump is small, the vibration cannot be fully compacted, and the honeycomb and pitted surface are easy to cause quality defects.

When the concrete is vibrated, because the roof slope is great, the traditional flat vibrator can not exert the effect, so the vibrator adopts the vibrator to combine with the vibrator 7 attached to the steel mould 4 to vibrate, and the concrete is poured step by step from bottom to top until the pouring is finished.

In order to ensure that the concrete surface is attractive and smooth, two parts of a telescopic ladder are prepared and are placed from bottom to top along the direction of a roof, workers manually collect the concrete surface up and down along a ladder in the sliding and lifting process of a steel die 4, and the collection is carried out by two steps: firstly, after the sliding mould is lifted, rough plastering is carried out by using wood to play a role in lifting and scraping; and secondly, after the concrete is initially set, the surface is coated by iron, and the flattening and polishing effects are achieved so as to facilitate paving and pasting of the waterproof coiled material.

The concrete is maintained by adopting an artificial natural maintenance method, a film or a straw bag is covered on the concrete within 12 hours after the concrete is poured, and watering and maintenance are carried out, so that the problems of concrete cracks and the like are reduced.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.