CN108487266A - A kind of cutting arched framework beam forms - Google Patents

Abstract

The invention discloses an arched skeleton beam formwork for road cutting, which is composed of several arched units, each arched unit is composed of an inner mold and an outer mold; Arc, inner mold leg mold, two inner mold flat plates, two inner mold corners and inner mold lower arc are closed and assembled; outer mold is composed of outer mold upper arc and two outer mold flat plates; inner mold and outer mold The molds are fixed and connected in parallel by connecting angle steel, the inner diameter of the arc on the outer mold is larger than the inner diameter of the arc on the inner mold; there is a blocking plate fixedly connected between the inner membrane plate and the outer end of the outer mold plate through a flange; the arched unit and the arched The units are connected by horizontal connecting angle steels and vertical connecting angle steels. The invention establishes a fixed connection through each arched unit, and pouring concrete on site can form a cutting slope protection. Compared with the prior art, it has the advantages of quick installation, convenient dismantling, and complete formwork, and at the same time greatly reduces construction costs and improves improved construction efficiency.

Description

A cutting arched skeleton beam formwork

Technical field:

The invention belongs to the technical field of road engineering formwork equipment, and in particular relates to a formwork for cast-in-place arched skeleton beams of cuttings.

Background technique:

In the engineering, try to encounter the situation of cutting engineering (or tunnel opening engineering) formed by excavating in unfavorable geological bodies such as landslides and rock piles. When the excavation cutting cuts through the sliding surface or breaks the anti-slide section of the landslide, it is necessary to take strong retaining engineering to ensure the stability of the excavation cutting and the landslide (rock pile), especially when the excavation heights on both sides are relatively high. When the cutting is high and the excavation is narrow, the project investment is large and the appearance is not beautiful, and the total project investment is even greater. At present, part of the existing road cutting is poured on site, and various formworks need to be spliced according to the size during pouring. After the traditional formwork is constructed, there are problems such as troublesome formwork removal, easy lack of edges and corners, and inconvenient installation and removal operations. Therefore, a new template structure is urgently needed to solve the above problems.

Invention content:

The technical problem to be solved by the present invention is to provide a cast-in-place formwork for cutting arched skeleton beams which is easy to install and dismantle.

In order to solve the problems of the technologies described above, the present invention takes the following technical solutions:

An arched skeleton beam formwork for cutting, which is composed of several arched units, each arched unit is composed of an inner mold and an outer mold; The mold leg mold, two inner mold flat plates, two inner mold corners and inner mold lower arcs are closed and assembled. The other side of the arc on the mold is respectively connected to one side of the two inner mold plates through flanges, the other side of the two inner mold plates is respectively connected to the corner of the two inner molds through flanges, and the other side of the two inner mold corners is One side is respectively connected to the two sides of the lower arc of the inner mold through the flange; the outer mold is composed of the upper arc of the outer mold and two flat plates of the outer mold, wherein the upper arc of the outer mold and the upper arc of the inner mold are concentric arcs, and the upper arc of the outer mold The two sides of the arc are respectively connected to one side of the two outer mold plates through flanges; the inner mold and the outer mold are fixedly connected in parallel through connecting angle steel, and the inner diameter of the arc on the outer mold is larger than the inner diameter of the arc on the inner mold; The outer ends of the formwork plates are fixedly connected with blocking plates through flanges; the arched units are connected with each other through horizontal connecting angle steels and vertical connecting angle steels.

A plurality of fixed reinforcing ribs are vertically fixedly welded on the inner wall of the upper arc of the inner mold, the flat plate of the inner mold and the inner wall of the lower arc of the inner mold.

A plurality of fixed reinforcement ribs are vertically fixedly welded on the arc on the outer mold and the outer wall of the outer mold plate.

The upper ends of the above-mentioned outer mold plate and inner mold plate are provided with transverse connection holes corresponding to the fixed transverse connection angle steel positions, and are used for fixedly connecting the transverse connection angle steel through flanges.

The upper arc of the outer mold, the upper arc of the inner mold, and the upper end of the flat plate of the inner mold are provided with vertical connection holes corresponding to the positions of the fixed vertical connection angle steels, which are used for fixedly connecting the vertical connection angle steels through flanges.

Further, connecting plates with butt joint flanges are welded on both sides of the above-mentioned outer mold plate, and the length of the joint plate is slightly shorter than the length of the outer wall of the outer mold plate, so that a certain gap is left between the joint plate of the butt joint flange and the outer mold plate, which is convenient It is easy to operate when pouring concrete and will not leave template marks.

Further, the inner mold leg mold is connected between the upper arcs of the two inner molds, the flanges on the straight sides of the arcs on the inner molds deviate inward at a certain angle, and the flanges on the straight sides of the inner mold leg molds deviate outwards at a certain angle , forming a bell mouth structure with a large outside and a small inside, so that the bite force between the inner mold leg mold and the formwork is small, and the formwork can be easily removed.

Further, the corners of the above-mentioned inner mold are three-dimensional structures with different heights on the left and right, the high-end surface is connected with the flat plate of the inner mold, and the low end surface is connected with the lower arc of the inner mold.

When the present invention forms the mold, the respective templates of the inner mold and the outer mold are connected correspondingly through flanges to form an arched unit, and then each arched unit is fixedly connected together through a horizontal connection angle steel and a vertical connection angle steel, and then each Concrete is poured in the gaps between the units to form the cutting slope protection.

The beneficial effect of the present invention is that: the cut arched skeleton beam formwork of the present invention is fixedly connected through each arched unit, and the concrete poured on site can form the cut slope protection. Compared with the prior art, it has the advantages of quick installation, convenient dismantling, The advantages of complete formwork, while greatly reducing construction costs and improving construction efficiency.

Description of drawings:

Fig. 1 is the overall structure schematic diagram of cutting arched skeleton beam formwork of the present invention;

Fig. 2 is the structural representation of arch unit among the present invention;

Fig. 3 is the structural representation of outer mold plate in the present invention;

In the figure: 1-arch unit, 2-inner mold, 3-outer mold, 4-upper arc of inner mold, 5-leg mold of inner mold, 6-flat plate of inner mold, 7-corner of inner mold, 8-inner mold Lower arc, 9-upper arc of outer mold, 10-plate of outer mold, 11-connecting angle steel, 12-blocking plate, 13-horizontal connecting angle steel, 14-vertical connecting angle steel, 15-horizontal connecting hole, 16-vertical To the connection hole, 17-connection plate.

Detailed ways:

The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings.

As shown in Figures 1 to 2, a cut arched skeleton beam formwork is composed of several arched units 1, and each arched unit 1 is composed of an inner mold 2 and an outer mold 3; the overall structural shape of the inner mold 2 is The hollow arched body is assembled by closing and assembling two inner mold upper arcs 4, inner mold leg molds 5, two inner mold flat plates 6, two inner mold corners 7 and inner mold lower arcs 8. The opposite sides of the arc 4 are connected to the inner mold leg mold 5 by flanges, and the other sides of the upper arcs 4 of the two inner molds are respectively connected to one side of the two inner mold flat plates 6 through flanges, and the two inner mold flat plates 6 The other side of the two inner mold corners 7 is respectively connected to one side by flanges, and the other side of the two inner mold corners 7 is respectively connected to both sides of the lower arc 8 of the inner mold through flanges; the outer mold 3 is formed by the upper arc of the outer mold. 9 and two outer mold plates 10, wherein the upper arc 9 of the outer mold and the upper arc 4 of the inner mold are concentric arcs, and the two sides of the upper arc 9 of the outer mold are respectively connected to the two outer mold plates 10 through flanges. On one side; the inner mold 2 and the outer mold 3 are fixedly connected in parallel by connecting the angle steel 11, and the inner diameter of the arc 9 on the outer mold is greater than the inner diameter of the arc 4 on the inner mold; The blue is fixedly connected with a blocking plate 12; the arched unit 1 and the arched unit 1 are connected by a horizontal connection angle steel 13 and a vertical connection angle steel 14; the inner mold upper arc 4, the inner mold flat plate 6 and the lower inner mold The inner wall of the arc 8 is vertically fixedly welded with several fixed reinforcing ribs; the outer wall of the arc 9 on the outer mold and the outer wall of the outer mold plate 10 are vertically fixedly welded with several fixed reinforcing ribs; The upper end of the die plate 6 is provided with a horizontal connection hole 15 corresponding to the position of the fixed horizontal connection angle steel 13, which is used to fixedly connect the horizontal connection angle steel 13 through the flange; The upper end of the plate 6 is provided with a vertical connecting hole 16 corresponding to the position where the vertical connecting angle steel 14 is fixed, and is used for fixedly connecting the vertical connecting angle steel 14 through a flange.

Further, the two sides of the above-mentioned outer mold plate 10 are welded with connecting plates 17 of butt flanges, and the length of the connecting plates 17 is slightly less than the length of the outer wall of the outer mold plate 10, so that the connecting plate 17 of the butt joint flange and the outer mold plate 10 There is a certain gap, which is convenient for operation when pouring concrete, and will not leave template marks.

Further, the inner mold leg mold 5 is connected between the upper circular arcs 8 of the two inner molds, and the flanges on the straight sides of the inner mold upper circular arcs 8 deviate to a certain angle inwardly, and the flanges on the straight sides of the inner mold leg molds 5 correspond to Deviating outward at a certain angle constitutes a bell mouth structure with a large outside and a small inside, so that the bite force between the inner mold leg mold 5 and the formwork is small, and the formwork can be easily removed.

Further, the above-mentioned inner mold corner 7 is a three-dimensional structure with different heights on the left and right, its high end surface is connected with the inner mold flat plate 6, and its low end surface is connected with the inner mold lower arc 8.

During on-site construction: where it is necessary to pour the formwork of the arched skeleton beam of the cutting, use the slope of the construction site as the base form, measure the size on the slope and lay the foundation in advance; Each formwork of the outer mold 3 is correspondingly connected through flanges to form an arched unit 1; each arched unit 1 is fixedly connected together through a horizontal connection angle steel 13 and a vertical connection angle steel 14, and then between each unit Concrete is poured in the gap to form the cutting slope protection.

Claims (8)

1. a cutting arched skeleton beam formwork is made up of several arched units (1), and each arched unit (1) is made of internal formwork (2) and external formwork (3), it is characterized in that: described The overall structural shape of the inner mold (2) is a hollow arch body, consisting of two inner mold upper arcs (4), inner mold leg molds (5), two inner mold flat plates (6), two inner mold corners (7) It is closed and assembled with the lower circular arc (8) of the inner mold, and the opposite sides of the upper circular arc (4) of the two inner molds are connected with the inner mold leg mold (5) by a flange, and the upper circular arc (4) of the two inner molds ) are respectively connected to one side of the two inner mold flat plates (6) through flanges, and the other side of the two inner mold flat plates (6) are respectively connected to one side of the two inner mold corners (7) through flanges. The other side of the corner (7) of the block inner mold is respectively connected to the two sides of the lower arc (8) of the inner mold through flanges; the outer mold (3) is composed of an upper arc (9) of the outer mold and two flat plates (10) of the outer mold , wherein the upper circular arc (9) of the outer mold and the upper circular arc (4) of the inner mold are concentric arcs, and the two sides of the upper circular arc (9) of the outer mold are respectively connected to one side of the two outer mold plates (10) through flanges ; Internal mold (2) and external mold (3) are fixedly connected in parallel by connecting angle steel (11), and the internal diameter of circular arc (9) on external mold is greater than the internal diameter of circular arc (4) on internal mold; Internal mold plate (6) and The outer ends of the outer mold plates (10) are fixedly connected with blocking plates (12) through flanges; the arched units (1) are connected to the vertical Connecting angle steel (14) is connected mutually. 2. The cut arched skeleton beam formwork according to claim 1, characterized in that: the inner mold upper arc (4), the inner mold flat plate (6) and the inner mold lower arc (8) are vertical on the inner wall Fixed welding has several fixed ribs. 3. The cutting arched skeleton beam formwork according to claim 1, characterized in that: the outer wall of the upper arc (9) of the outer mold and the outer wall of the outer mold plate (10) are vertically fixedly welded with several fixed reinforcing ribs. 4. The cutting arched skeleton beam formwork according to claim 1, characterized in that: the upper ends of the outer formwork plate (10) and the inner formwork plate (6) correspond to the positions of the fixed transverse connection angle steels (13) with transverse The connection hole (15) is used for fixedly connecting the transverse connection angle steel (13) through the flange. 5. The cut arched skeleton beam formwork according to claim 1, characterized in that: the upper circular arc (9) of the outer mold, the upper circular arc (8) of the inner mold and the upper end of the inner mold plate (6) are correspondingly fixed A vertical connection hole (16) is provided at the position of the vertical connection angle steel (14), which is used for fixedly connecting the vertical connection angle steel (14) through the flange. 6. according to claim 1 or 3 described cutting arched skeleton beam templates, it is characterized in that: the both sides of described outer mold plate (10) are welded with the connecting plate (17) of butt joint flange, the connecting plate (17) The length is slightly less than the outer wall length of the outer mold plate (10), so that a certain gap is left between the connecting plate (17) of the butt joint flange and the outer mold plate (10). 7. The cut arched skeleton beam formwork according to claim 1, characterized in that: the inner mold leg mold (5) is connected between the upper circular arcs (8) of the two inner molds, and the inner mold upper circular arcs (8) ) straight-side flanges inwardly at a certain angle, and the straight-side flanges of the inner mold leg mold (5) correspond to a certain angle outwardly, forming a bell mouth structure with a large outside and a small inside, so that the inner mold leg mold (5) and the template The bite force between them is small, and the formwork can be easily disassembled. 8. The cutting arched skeleton beam formwork according to claim 1, characterized in that: the inner mold corner (7) is a three-dimensional structure with different heights on the left and right, and its high-end surface is connected with the inner mold plate (6), the lower The end face is connected with the lower circular arc (8) of the internal mold.