CN204039973U - The suspension device of both sides, cofferdam, place, a kind of nearly dike shoal - Google Patents

Abstract

The utility model discloses a supporting device on both sides of a cofferdam near a dike and shoal, and relates to the field of building construction. The device comprises bored cast-in-place piles (1) located outside the steel sheet pile cofferdam, reinforced concrete connecting beams (2) located on the upper part of the bored cast-in-place piles (1), steel sheet piles (3), supported on the steel sheet piles (3) The inner support enclosure (4) and the inner support steel pipe (5) on the inner side, the inner support section steel I (6) and the inner support section steel II (7) supported between the inner support enclosure (4) and the inner support steel pipe (4) ), the support corbel (8) set under the inner support enclosure (4), the head disc (9) sleeved at both ends of the inner support steel pipe (5), the inner support enclosure (4) and the inner support Node stiffeners (10) at the joints of steel pipes (5). It solves the problem of unbalanced soil pressure on both sides of the cap excavation, reduces the depth of steel sheet piles and the difficulty of supporting the steel sheet pile cofferdam, and improves the economic benefits of the project under the premise of ensuring construction safety and quality.

Description

A supporting device on both sides of the cofferdam near the embankment and shoal

technical field

The utility model relates to the field of building construction, in particular to a supporting device on both sides of a cofferdam near a dike and shoal.

Background technique

With the continuous growth of the country's economic strength, domestic infrastructure construction is in a period of rapid development. Bridge projects across rivers pay more attention to factors such as maintaining the navigability of the original river, protecting water resources, flood control and anti-scouring. In the design, priority is given to the single-span bridge type across the river, and the caps are generally buried deep in the shallows near the embankment of the river. The deep-buried caps near the dike and shoal are prone to affect the stability of the embankment during the deep excavation construction process. At the same time, the active earth pressure on both sides of the cap support structure is asymmetrical, unbalanced, and the construction depth of the support structure is deep. Therefore, there are a series of problems in the construction of deep-buried caps near the dike and shoal. In order to effectively solve the problems existing in the construction of deep-excavated caps near the embankment Support system for unbalanced earth pressure.

Utility model content

In order to overcome the above-mentioned defects, the technical problem to be solved by the utility model is: to provide a method to solve the problem of affecting the stability of the embankment and the unbalanced earth pressure on both sides of the cap support structure, etc. The supporting devices on both sides of the cofferdam near the embankment and shoal in question.

The technical scheme adopted by the utility model to solve the above technical problems is: a support device on both sides of the cofferdam near the dike and shoal, including a dike support structure on the side close to the levee and a steel sheet pile cofferdam on the side close to the shoal .

The embankment support structure includes bored piles located outside the steel sheet pile cofferdam and reinforced concrete connecting beams located on the upper part of the bored piles.

The steel sheet pile cofferdam includes steel sheet piles, inner support fences and inner support steel pipes supported on the inside of the steel sheet piles, and inner support steel I and inner support steel II supported between the inner support fence and the inner support steel pipes. The support corbel below the inner support enclosure, the head discs socketed at both ends of the inner support steel pipe, and the node stiffener at the connection between the inner support enclosure and the inner support steel pipe.

The diameter of the bored piles is 1-1.2m, and the distance between pile centers is 1-1.4m.

The steel sheet pile is a Larsen VI type steel sheet pile.

The inner support enclosure is H-shaped steel.

The inner support section steel I is I-beam.

The inner supporting steel II is H-shaped steel.

The beneficial effects of the utility model are: the support system of the utility model adopts the multi-level support system as mentioned above, which firstly solves the influence of the construction of the deeply buried cap in the embankment on the stability of the flood control embankment, and secondly reduces the excavation elevation of the cap , solved the problem of unbalanced soil pressure on both sides of the cap excavation, reduced the depth of steel sheet piles and the difficulty of supporting the steel sheet pile cofferdam, and improved the economic benefits of the project on the premise of ensuring the safety and quality of the construction.

Description of drawings

The supporting devices on both sides of the cofferdam near the embankment and shoal described in the utility model will be described in detail below in conjunction with the accompanying drawings.

Fig. 1 is the elevation view of the utility model support system;

Fig. 2 is the plan view of the steel sheet pile cofferdam of the utility model support system;

Fig. 3 is the joint processing diagram of the internal support section steel I and the internal support enclosure;

Figure 4 is the treatment diagram of the joints between the inner support section steel II and the inner support enclosure

Fig. 5 is a processing diagram of the inner support corner node;

Fig. 6 is a node processing diagram of the inner support enclosure, the inner support section steel I, the inner support section steel II and the inner support enclosure;

Fig. 7 is a schematic diagram of supporting corbel;

Fig. 8 is a schematic diagram of a head disc.

In the figure: 1. Bored cast-in-place pile, 2. Pile top coupling beam, 3. Steel sheet pile, 4. Internally supported fence, 5. Internally supported steel pipe, 6. Internally supported section steel Ⅰ, 7. Internally supported section steel Ⅱ, 8 , Support corbel, 9, head disc, 10, node stiffener.

Detailed ways

As shown in Figure 1-8, a support device on both sides of the cofferdam near the dike and shoal includes a dike support structure on the side close to the levee and a steel sheet pile cofferdam on the side close to the shoal.

The embankment support structure includes bored piles 1 located outside the steel sheet pile cofferdam and reinforced concrete connecting beams 2 located on the upper part of the bored piles 1 .

The steel sheet pile cofferdam includes a steel sheet pile 3, an inner support fence 4 and an inner support steel pipe 5 supported on the inner side of the steel sheet pile 3, and an inner support section steel I6 and an inner support steel pipe 5 supported between the inner support fence 4 and the inner support steel pipe 4. Support steel Ⅱ7, the support corbel 8 set under the inner support enclosure 4, the head disc 9 sleeved at both ends of the inner support steel pipe 5, the node stiffener at the connection between the inner support enclosure 4 and the inner support steel pipe 5 10.

The diameter of the bored pile 1 is 1-1.2m, and the distance between pile centers is 1-1.4m.

The steel sheet pile 3 is a Larsen VI type steel sheet pile.

The inner support wall 4 is H-shaped steel.

The inner support section steel I6 is I-beam.

The inner supporting steel II7 is H-shaped steel.

Construction steps of the present utility model are as follows:

1. Use bored piles to support the flood control embankment.

2. Excavate or backfill the soil inside the embankment after the supporting piles are completed to reduce the surface height difference on both sides of the supporting structure.

3. Steel sheet pile cofferdam construction is used for the cap platform, and Larsen VI type steel sheet pile is used.

4. The inner support and fence are set inside the cap to reduce the design length of the steel sheet pile and meet the stress requirements of different working conditions at the same time.

5. Stiffening plates are set at the joints of the inner support enclosure to prevent local buckling of the structure.

It should be understood that the above specific embodiments of the present utility model are only used to illustrate or explain the principle of the present utility model, but not to limit the present utility model. Therefore, any modification, equivalent replacement, improvement, etc. made without departing from the spirit and scope of the present utility model shall be included in the protection scope of the present utility model. Furthermore, the appended claims are intended to cover all changes and modifications that come within the scope and boundaries of the appended claims, or equivalents of such scope and boundaries.

Claims (6)

1. A supporting device on both sides of the cofferdam near the dike and shoal, comprising a levee support structure near the levee side and a steel sheet pile cofferdam near the shoal side, and the levee support structure includes a steel sheet pile cofferdam located near the levee side Bored cast-in-place piles (1) on the outside of the weir and reinforced concrete connecting beams (2) on the upper part of the bored piles (1), the steel sheet pile cofferdam includes steel sheet piles (3), supported on the inside of the steel sheet piles (3) The inner support enclosure (4) and the inner support steel pipe (5), the inner support section steel I (6) and the inner support section steel II (7) supported between the inner support enclosure (4) and the inner support steel pipe (4) , the support corbel (8) set under the inner support enclosure (4), the head disc (9) sleeved at both ends of the inner support steel pipe (5), the inner support enclosure (4) and the inner support steel pipe (5) Node stiffeners (10) at the connection. 2. The support device on both sides of the cofferdam near the dike and shoal according to claim 1, characterized in that: the diameter of the bored pile (1) is 1-1.2m, and the distance between pile centers is 1-1.4m . 3. The support device on both sides of the cofferdam near the embankment and shoal according to claim 1, characterized in that: the steel sheet pile (3) is a Larsen VI steel sheet pile. 4. The support device on both sides of the cofferdam near the embankment and shoal according to claim 1, characterized in that: the inner support enclosure (4) is H-shaped steel. 5. The supporting device on both sides of the cofferdam near the dike and shoal according to claim 1, characterized in that: the inner supporting steel I (6) is I-shaped steel. 6. The supporting device on both sides of the cofferdam near the dike and shoal according to claim 1, characterized in that: the inner supporting steel II (7) is H-shaped steel.