CN201254992Y - Whole round steel ring - Google Patents

Abstract

The utility model discloses a full circle steel ring, which is formed by ring splicing of a plurality of identical structural monomers. The structural monomer includes an arc-shaped web, and the two sides of the outer arc surface of the arc-shaped web are respectively The outer arc flange steel plate is welded, the inner arc steel plate of the arc web is welded on both sides of the inner arc surface of the arc web, and the two ends of the structural unit are respectively provided with end plates. The full round steel ring of the utility model has high deformation resistance. At the same time, through simple adjustments, it has a certain degree of correction function for the roundness and flatness of the reinforced concrete segment, and can also correct the unevenness of the annulus of the reinforced concrete segment structure.

Description

full round steel ring

technical field

The utility model relates to the technical field of shield tunnel construction, in particular to a full-circle steel ring used as an auxiliary structure for tunnel construction.

Background technique

With the continuous development of underground engineering, shield circular tunnels have been widely used in the design and construction of tunnels. The structure of the circular tunnel with the shield method is a ring structure assembled piece by piece by connecting the segments with rings and longitudinal bolts. Parameters such as roundness and flatness of the structure will affect the quality of construction.

The negative ring (reinforced concrete ring) formed in the working shaft will produce vertical deformation under the action of the reinforced concrete segment itself, and this vertical deformation will always affect the true roundness of the initial diameter of the positive first ring tunnel, the circularity of the reinforced concrete The flatness of the annulus and the opening angle of the reinforced concrete segment joints have a serious negative impact on the quality of the project.

In order to further improve the construction quality of the shield tunneling method, those skilled in the art have been devoting themselves to developing an auxiliary structure that can significantly improve the tunnel construction quality with less investment.

Utility model content

In view of the above-mentioned defects of the prior art, the technical problem to be solved by the utility model is to provide a full-circle steel ring which requires less investment and can significantly improve the quality of tunnel construction.

In order to achieve the above purpose, the utility model provides a full-circle steel ring, which is composed of a plurality of identical structural monomers, the structural monomers include an arc-shaped web, and the outer surface of the arc-shaped web The two sides of the arc surface are respectively welded with outer arc flange steel plates, the two sides of the inner arc surface of the arc web are respectively welded with inner flange arc steel plates, and the two ends of the structural unit are respectively provided with end plates.

Preferably, the structural unit is also provided with a gripping port for a manipulator.

Preferably, a plurality of support bolts for adjustment are also provided on the arc-shaped steel plate of the inner flange.

The full round steel ring of the utility model is welded by high-strength steel plates. Due to the above-mentioned structure, it has a high resistance to deformation in actual construction. At the same time, through simple adjustments, it has a certain degree of correction function for the roundness and flatness of the reinforced concrete segment, and can also correct the unevenness of the annulus of the reinforced concrete segment structure. Due to the high strength of the full-circle steel ring structure assembled from multiple pieces, it has the function of transmitting huge pressure up to a thousand tons on its ring surface.

Due to the above beneficial effects, the full-round steel ring of the utility model can be used to assemble a circular tunnel with high roundness, good flatness of the ring surface, small opening angle of the joints of the ring segments, and less water leakage.

The conception, specific structure and technical effects of the present utility model will be further described below in conjunction with the accompanying drawings, so as to fully understand the purpose, characteristics and effects of the present utility model.

Description of drawings

Fig. 1 is the overall structural representation of a specific embodiment of the utility model;

Fig. 2 is a structural representation of a structural monomer in Fig. 1;

FIG. 3 is a side view of the structural unit in FIG. 2 .

Detailed ways

Fig. 1 is the overall structure schematic diagram of a specific embodiment of the utility model, as can be seen from Fig. 1, a full circle steel ring in the present embodiment has included N1, N2, N3, N4, N5, N6, N7 and N8 altogether 8 pieces Structural monomer. The structural dimensions of each structural unit are exactly the same, and they are assembled together by high-strength bolts at the ends.

As shown in Figure 2 and Figure 3, the structural monomer N1 is taken as an example. The structural monomer N1 in this embodiment includes an arc-shaped web 1, and the arc-shaped web 1 is 500mm high (same as the height of the segment). , 30mm thick curved steel plate. The two sides of the outer arc surface of the arc-shaped web 1 are respectively welded with outer arc flange steel plates 2, and the outer arc flange steel plates 2 are steel plates with a thickness of 20 mm. The two sides of the inner arc surface of the arc-shaped web 1 are respectively welded with inner-flange arc-shaped steel plates 3, and the inner-flange arc-shaped steel plates 3 are steel plates with a width of 150 mm and a thickness of 20 mm, thus forming a cross-section that is basically "I" The arc structure. The two ends of the structural unit N1 also have end plates 4 respectively. The end plate 4 is a steel plate with a thickness of 30 mm. The main structure of the full circle steel ring with the same diameter.

A plurality of support bolts 5 for adjustment are also arranged on the arc-shaped steel plate 3 of the inner flange. There is a roundness adjustment gap of 10-20mm between the arc-shaped steel plate 3 of the inner flange and the inner arc of the tunnel segment, and the roundness adjustment is completed by a plurality of support bolts 5 fixed on the arc-shaped steel plate 3 of the inner flange . The adjustment of the roundness of the reinforced concrete segment structure by the full-circle steel ring only needs to adjust the advance and retreat of the reserved support bolt 5 in the tunnel, which is very simple.

The jack pressure acting on the ring surface is transmitted to the arc web 1 by the force transmission block corresponding to the position of the jack, and then transmitted to the stiffening plate by the arc web 1 . Blocks are connected by high-strength bolts, and the assembly method and form are the same as segment assembly.

The shield manipulator holds the mouth knot and is pre-buried in the force transmission block made of partially reinforced concrete. The circumferential arc-shaped web 1 of the structure is also provided with connecting holes with the same spacing as the longitudinal screw holes of the reinforced concrete segment. After the negative ring is removed, the first ring and the front three times The longitudinal bolts connected to the diameter and length of the tunnel and the full-circle steel ring are not only used as a temporary backing when assembling the first ring, but also as a part of the flexible joint between the tunnel and the working shaft. The force transmission block is only used to transmit the jack pressure. When the shield is assembling each single segment of the first ring segment, the local force transmission block in the assembling range is removed until the first ring assembly is completed.

The full round steel ring of the utility model is welded by high-strength steel plates. Due to the above-mentioned structure, it has a high resistance to deformation in actual construction. At the same time, through simple adjustments, it has a certain degree of correction function for the roundness and flatness of the reinforced concrete segment, and can also correct the unevenness of the annulus of the reinforced concrete segment structure. Due to the high strength of the full-circle steel ring structure assembled from multiple pieces, it has the function of transmitting huge pressure up to a thousand tons on its ring surface.

Due to the above beneficial effects, the full-round steel ring of the utility model can be used to assemble a circular tunnel with high roundness, good flatness of the ring surface, small opening angle of the joints of the ring segments, and less water leakage.

It should be understood that in the claims and description of the present utility model, all "comprising..." should be interpreted as an open meaning, that is, its meaning is equivalent to "at least contains...", and should not be understood as a closed The meaning of , that is, its meaning should not be understood as "contains only...".

To sum up, what is described in this specification are only several preferred specific embodiments of the present utility model, and the above embodiments are only used to illustrate the technical solution of the present utility model rather than limit it. All technical solutions that can be obtained by those skilled in the art based on the concept of the utility model through logical analysis, reasoning or limited experiments on the basis of the prior art shall be within the protection scope of the claims of the utility model.

Claims (3)

1, a kind of full circle steel loop, the structure monomer annular identical by polylith is spliced, it is characterized in that: described structure monomer comprises an arc-shaped webs, the extrados both sides of described arc-shaped webs are welded with outer arc edge of a wing steel plate respectively, edge of a wing curved plate in the intrados both sides of described arc-shaped webs are welded with respectively, the two ends of described structure monomer also have end plate respectively.

2, full circle steel loop as claimed in claim 1 is characterized in that: also be provided with a plurality of hook bolts that are used to adjust on the curved plate of the edge of a wing in described.

3, full circle steel loop as claimed in claim 1 is characterized in that: also offer manipulator on the described structure monomer and seize mouth on both sides by the arms.

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