CN215164768U - Construction support suitable for marine large-span cast-in-place beam - Google Patents

Abstract

A construction support applicable to a marine long-span cast-in-place beam belongs to the field of civil engineering. The problem that the single-layer Bailey beam has insufficient spanning capacity and the potential safety hazard of the double-layer Bailey beam is large under the unfavorable conditions of a typhoon high-incidence area, a sludge geological layer thickness and the like is solved. Two sets of box girder templates are respectively erected in the both sides of cast-in-place roof beam, I-steel distributor beam and triangular supports frame at the cast-in-place roof beam bottom side by side around, the combination formula truss connects the bottom at the I-steel distributor beam through many I-steel, set up a set of first interim buttress respectively at combination formula truss both ends, the lateral wall of first interim buttress is connected on the lateral wall of pier stud through a plurality of connecting pieces, and the top rigid coupling of first interim buttress is in the bottom of combination formula truss, many the interim buttress of second divide into the multiunit, and the interim buttress of multiunit second sets up side by side between two sets of first interim buttresses, every interim buttress of group second is connected the bottom at combination formula truss through many horizontal spreader beams. This novel mainly used cast-in-place roof beam's construction.

Description

Construction support suitable for marine large-span cast-in-place beam

Technical Field

The utility model belongs to the civil engineering field especially relates to a cast-in-place roof beam construction support suitable for marine silt layer geological layer thickness in typhoon high-rise area, large-span.

Background

In the construction process of the offshore cast-in-place beam, a steel pipe Bailey beam support is usually erected for construction, and due to the influence of adverse factors such as a typhoon high-incidence area, thick silt geological layer, large cast-in-place beam span and the like, particularly for the construction of the cast-in-place beam with undefined geological exploration and large span, a plurality of rows of steel pipe upright posts need to be erected or double-layer Bailey pieces need to be arranged for construction by adopting the traditional construction method, so that the construction material is more, and the safety risk is extremely high; in the face of the above situation, part of the engineering teams use double-layer Bailey sheets to reduce the number of rows of steel pipe columns, thereby avoiding quality accidents and ensuring safety.

However, the operation mode is not suitable for large-span cast-in-place beams under the geological condition of an ultra-thick sludge layer because the thickness of the sludge layer is 20-45m, the material usage amount is still too large, the cost is high, the steel pipe is difficult to insert and beat, and particularly, the wind power in coastal areas is large, and the inserting and beating operation is unsafe; the multi-row steel pipes are greatly disturbed in the stratum close to each other, and the safety risk is high.

If the construction support is not used, quality accidents are easy to happen in the construction process, the construction cost is high, the construction period and the safety pressure caused by construction are increased, and therefore a novel cast-in-place beam construction support suitable for thick geological layers and large spans of offshore mud layers in typhoon high-incidence areas is urgently needed.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that needs to solve is: in order to solve the problems that under the unfavorable conditions of a typhoon high-incidence area, a silt geological layer is thick and the like, the single-layer Bailey beam is insufficient in spanning capacity and large in potential safety hazard of a double-layer Bailey beam, and the problems that multiple points, small span, large potential safety hazard, low support spanning capacity and the like exist, the cast-in-place beam construction support suitable for the marine silt layer geological layer in the typhoon high-incidence area is thick and large in span is further provided.

The utility model discloses a solve the technical scheme that above-mentioned technical problem adopted and be:

the construction support suitable for the offshore large-span cast-in-place beam comprises a plurality of first temporary buttresses, a combined truss, an I-shaped steel distribution beam, two groups of box beam templates, a plurality of cross beams, a triangular support frame, a plurality of I-shaped steels, a plurality of connecting pieces and a plurality of second temporary buttresses, wherein the two groups of box beam templates are respectively erected on two sides of the cast-in-place beam and are fixedly connected through channel steel, the I-shaped steel distribution beam and the triangular support frame are arranged side by side in the front and at the back of the cast-in-place beam and are erected at the bottom of the cast-in-place beam, the combined truss is connected to the bottom end of the I-shaped steel distribution beam through the plurality of I-shaped steels arranged side by side, the plurality of first temporary buttresses are divided into two groups, a group of first temporary buttresses are respectively arranged at two ends of the combined truss, the side wall of the first temporary buttresses is connected to the side wall of a pier column through the plurality of connecting pieces, and the top end of the first temporary buttresses is fixedly connected to the bottom of the combined truss, many the interim buttresses of second divide into the multiunit, and the interim buttresses of multiunit second set up side by side between two sets of first interim buttresses, the interim buttress of every group second is connected in the bottom of combination formula truss through many horizontal load beams.

Compared with the prior art, the utility model the beneficial effect who produces is:

1. the operation is simple, the use is convenient and safe, the structure is simple, and the stress is clear;

2. the combined truss is adopted, so that the hoisting engineering quantity is reduced, the construction process is optimized, the working efficiency is improved, the construction flow is simplified, and the use of tubular pile steel is saved;

3. the problems of insufficient spanning capacity of the Bailey beams and large potential safety hazard of the double-layer Bailey beams are solved by utilizing the characteristic of large rigidity of the combined truss, the problem of insufficient strength of the truss at the node is solved by utilizing the reinforcing vertical rod, and the combined truss has good economic benefit and social benefit;

4. the combined truss is adopted to reduce the upper structure of the temporary structure, reduce the hoisting amount, reduce the safety risk in the construction process and reduce the requirement on the operation space.

Drawings

FIG. 1 is a schematic view of the longitudinal section structure of the present invention;

FIG. 2 is a cross-sectional view taken at A-A of FIG. 1;

FIG. 3 is a cross-sectional view taken at B-B of FIG. 1;

FIG. 4 is an enlarged view of a portion of FIG. 3 at A;

FIG. 5 is an enlarged view of a portion of FIG. 1 at B;

FIG. 6 is a bottom view of the attachment member;

fig. 7 is a side view of the connector.

Detailed Description

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings:

as shown in fig. 1, 2 and 3, the construction support suitable for the offshore large-span cast-in-place beam comprises a plurality of first temporary buttresses 1, a combined truss 2, an i-beam distribution beam 3, two groups of box beam templates 4, a plurality of cross beams 5, a triangular support frame 7, a plurality of i-beams 8, a plurality of connecting pieces 9 and a plurality of second temporary buttresses 11, wherein the two groups of box beam templates 4 are respectively erected at two sides of the cast-in-place beam 6 and fixedly connected through channel steel, the i-beam distribution beam 3 and the triangular support frame 7 are arranged side by side in front and at the back of and at the bottom of the cast-in-place beam 6, the combined truss 2 is connected to the bottom end of the i-beam distribution beam 3 through a plurality of i-beams 8 arranged side by side, the plurality of first temporary buttresses 1 are divided into two groups, a group of first temporary buttresses 1 are respectively arranged at two ends of the combined truss 2, the side walls of the first temporary buttresses 1 are connected to the side walls of the pier columns 10 through the plurality of connecting pieces 9, and the top rigid coupling of first interim buttress 1 is in the bottom of combination formula truss 2, many second interim buttresses 11 divide into the multiunit, and the interim buttress 11 of multiunit second sets up side by side between two sets of first interim buttresses 1, the interim buttress 11 of every group second connects in the bottom of combination formula truss 2 through many horizontal load beams 5.

As shown in fig. 2, the number of the first temporary buttresses 1 is four, each group has two first temporary buttresses 1, and in order to increase the stability of the first temporary buttresses 1, a first zigzag fixing frame 1-1 is arranged between the two first temporary buttresses 1.

As shown in fig. 1 and 3, each group of the second temporary buttresses 11 has six total buttresses, two second temporary buttresses 11 are arranged in one row, three rows of the second temporary buttresses 11 are arranged side by side, and in order to increase the stability of the second temporary buttresses 11, a second zigzag-shaped fixing frame 11-1 is arranged between two adjacent second temporary buttresses 11.

The plurality of cross arm beams 5 are arranged in an upper row and a lower row, one cross arm beam 5 is arranged in the upper row, three cross arm beams 5 are arranged in the lower row, the three cross arm beams 5 are fixedly arranged on one cross arm beam 5 in the upper row side by side, and each cross arm beam 5 in the lower row is connected with one row of second temporary buttresses 11;

as shown in fig. 2 and 3, the combined truss 2 includes a plurality of bailey beams 2-1, the plurality of bailey beams 2-1 are vertically arranged between the i-beam 8 and the cross beam 5 side by side and are located at positions below the cast-in-place beam 6, the bailey beams 2-1 are arranged densely, and the other positions are arranged sparsely.

As shown in fig. 1 and 6, each bailey beam 2-1 comprises a plurality of bailey pieces 2-1-1, the plurality of bailey pieces 2-1-1 are arranged side by side in a transverse direction and connected through bolts, a reinforcing vertical rod 12 is arranged at a position where the first temporary buttress 1 and the second temporary buttress 11 are connected with the combined truss 2, and the reinforcing vertical rod 12 is vertically welded on the bailey piece 2-1-1 or between the two bailey pieces 2-1-1.

As shown in fig. 6 and 7, the connecting member 9 comprises a steel plate 9-1 and a plurality of U-shaped connecting rods 9-2, the plurality of U-shaped connecting rods 9-2 are arranged on one side surface of the steel plate 9-1 side by side at equal intervals, the U-shaped connecting rods 9-2 are embedded in the pier stud 10 in advance, and the first temporary pier 1 is connected with the pier stud 10 through the steel plate 9-1.

As shown in fig. 4, a plurality of U-shaped reinforcing steel members 16 are disposed at the cross beams at the upper and lower ends of the bailey sheet 2-1-1, and both ends of the U-shaped reinforcing steel members 16 are welded to the cross beam 5.

The working principle is as follows: pre-storing and preparing the materials and machines related to the application outside the field; positioning a pile driver on a construction platform, and constructing the steel pipe pile after measuring and positioning; on the basis of the stable buttress, a novel combined truss, additional reinforcing chord members and reinforcing vertical rods are arranged to reasonably arrange the structure of the Bailey beam truss and reinforce weak parts, so that the large-span spanning construction of the support is realized; and (3) measuring the elastic deformation of the Bailey beam support, eliminating the inelastic deformation, ensuring the safety of the support, and finally pouring beam body concrete to complete the construction of the cast-in-place beam.

Claims (7)

1. The utility model provides a be applicable to marine cast-in-place roof beam construction support of striding greatly which characterized in that: the combined type beam formwork comprises a plurality of first temporary buttresses (1), a combined type truss (2), an I-shaped steel distribution beam (3), two groups of box beam formworks (4), a plurality of cross load beams (5), a triangular support frame (7), a plurality of I-shaped steels (8), a plurality of connecting pieces (9) and a plurality of second temporary buttresses (11), wherein the two groups of box beam formworks (4) are respectively erected on two sides of a cast-in-place beam (6) and are fixedly connected through channel steel, the I-shaped steel distribution beam (3) and the triangular support frame (7) are arranged in front and at the back side and are erected at the bottom of the cast-in-place beam (6), the combined type truss (2) is connected to the bottom end of the I-shaped steel distribution beam (3) through a plurality of steel (8) arranged side by side, the plurality of first temporary buttresses (1) are divided into two groups, a group of first temporary buttresses (1) are respectively arranged at two ends of the combined type truss (2), the lateral wall of first interim buttress (1) connect on the lateral wall of pier stud (10) through a plurality of connecting pieces (9), and the top rigid coupling of first interim buttress (1) is in the bottom of combination formula truss (2), the interim buttress of many second (11) divide into the multiunit, and the interim buttress of multiunit second (11) sets up side by side between two sets of first interim buttress (1), the interim buttress of every group second (11) are connected in the bottom of combination formula truss (2) through many horizontal load beams (5).

2. The cast-in-place beam construction bracket of claim 1, wherein: the combined truss (2) comprises a plurality of Bailey beams (2-1), and the Bailey beams (2-1) are vertically arranged between the I-steel (8) and the cross arm beam (5) side by side.

3. The cast-in-place beam construction bracket of claim 2, wherein: each Bailey beam (2-1) comprises a plurality of Bailey pieces (2-1-1), the Bailey pieces (2-1-1) are transversely arranged side by side and connected through bolts, a reinforcing vertical rod (12) is arranged at the position where the first temporary buttress (1) and the second temporary buttress (11) are connected with the combined truss (2), and the reinforcing vertical rod (12) is vertically welded on the Bailey pieces (2-1-1) or between the Bailey pieces (2-1-1).

4. The cast-in-place beam construction bracket of claim 3, wherein: connecting piece (9) include steel sheet (9-1) and many U-shaped connecting rods (9-2), many U-shaped connecting rods (9-2) equidistant setting side by side on one side surface of steel sheet (9-1), U-shaped connecting rod (9-2) set up in the inside of pier stud (10), first interim pier (1) is connected with pier stud (10) through steel sheet (9-1).

5. The cast-in-place beam construction bracket of claim 4, wherein: the first temporary buttresses (1) are four in number, each group is provided with two first temporary buttresses (1), and a first Z-shaped fixing frame (1-1) is arranged between the two first temporary buttresses (1).

6. The cast-in-place beam construction bracket of claim 5, wherein: every group second buttress (11) temporarily total six, two second buttress (11) temporarily are one row, the third row second buttress (11) temporarily sets up side by side, be provided with second zigzag mount (11-1) between two adjacent second buttress (11).

7. The cast-in-place beam construction bracket of claim 6, wherein: the transverse beams at the upper end and the lower end of the Bailey sheet (2-1-1) are provided with a plurality of U-shaped steel bar pieces (16), and two ends of each U-shaped steel bar piece (16) are welded on the transverse beam (5).

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