CN205776152U - Prestressed anchor waveform sheet pile retaining structure - Google Patents

Abstract

The utility model discloses a prestressed anchor wave sheet pile support structure, which includes a wave sheet pile, an anchor hole, and an anchor rod. The side bottom plate has a convex line and a groove respectively, with a built-in prestressed steel skeleton; the top plate is provided with an anchor hole for the anchor rod to pass through, and the anchor hole is provided with a reinforcing body to prevent the stress concentration of the wave sheet pile. The anchor rod is a single Or multiple steel tendons are grouted multiple times under normal pressure or high pressure, including the anchor section, non-anchor section and anchor head. The anchor rod passes through the anchor hole, and the anchor rod and the corrugated sheet pile are connected through the anchor head. The section is arranged in the stable soil layer; the anchor head includes an anchor bracket, an anchor, a concrete anchor and a grouting hole for grouting into the anchor hole. The utility model has high production efficiency, saves materials, reduces the failure rate of the sheet pile, reduces the horizontal deformation of the sheet pile, and meets the design requirements; reduces the excavation amount of earthwork, increases the excavation section and the construction space, and accelerates the construction efficiency.

Description

Prestressed Anchor Corrugated Sheet Pile Support Structure

technical field

The utility model relates to a supporting structure, in particular to a prestressed bolt corrugated sheet pile supporting structure.

Background technique

During the construction of underground engineering facilities, maintaining the stability of the foundation pit and enclosure is an important content, and cast-in-situ concrete support piles are one of the commonly used methods as the support structure. There are many forms and types of supporting structures, such as deep mixing cement-soil retaining wall, reinforced cement-soil mixing continuous wall, bored pile retaining wall, underground continuous wall, precast concrete pile, etc. Among them, high-strength prestressed corrugated sheet piles, as a kind of prefabricated concrete piles, have the advantages of large structural retaining section, short construction period and advanced construction technology compared with traditional concrete support piles. However, its cross-sectional size is small and its stiffness is small. It may cause the sheet pile to fail or deform too much due to excessive horizontal load, which cannot meet the design requirements, and even the joint with the foundation pit floor may crack due to excessive force.

At present, corrugated sheet piles are used as support structures, the upper part of which is mostly a cantilever type, and most of the horizontal loads (water, earth pressure, etc.) are supported by the strength of the sheet pile itself, so the sheet pile itself bears a large For example, under the condition of large excavation depth, the sheet pile may fail or deform too much due to excessive horizontal load, which cannot meet the design requirements, and even the connection with the bottom plate of the foundation pit (river, etc.) may be cracked due to excessive force , causing the project to fail.

Utility model content

The purpose of the utility model is to utilize the advantages of corrugated sheet piles and bolt support to develop a construction that can be widely used in infrastructure constructions such as foundation pit supports, river revetments, coastal lake banks, and embankment slopes to withstand large horizontal loads. Composite retaining structure of prestressed anchor corrugated sheet piles. .

In order to achieve the purpose of the above-mentioned utility model, the technical solution of the utility model is: a prestressed anchor wave sheet pile support structure, including a wave sheet pile, an anchor hole, and an anchor rod, and the wave sheet pile is a prestressed reinforced concrete structure, including The top plate, web plate and bottom plate have a wavy cross-section, and the web plates on both sides have a convex line and a groove respectively, with a built-in prestressed steel skeleton, the thickness is greater than 100mm, and the concrete grade is not lower than C40; The anchor hole through which the anchor rod passes, the anchor hole is cylindrical, the diameter of the anchor hole is greater than 50mm, and the anchor hole is provided with a reinforcement to prevent the stress concentration of the corrugated sheet pile, and the reinforcement is coated with anti-corrosion and anti-rust paint;

The anchor rod is made of single or multiple steel tendons with multiple grouting under normal pressure and high pressure, including the anchor section, non-anchor section and anchor head. The anchor rod passes through the anchor hole and connects the anchor rod and the wave sheet pile through the anchor head , the anchorage section of the anchor rod is set in the stable soil layer, and the prestress applied to the anchor rod is determined according to the design requirements;

The anchor head includes an anchor support, an anchor, a concrete anchor and a grouting hole for grouting into the anchor hole;

The anchor rod passes through the outer surface of the corrugated sheet pile and is sleeved with corrugated steel pipes and spiral steel bars.

As a preference of the present utility model, the reinforcing body is a steel pad.

As another preference of the present invention, the anchor rod can also be formed by using high-strength steel rods or steel strands, and grouting once or multiple times under normal pressure or high pressure.

The beneficial effects of the utility model are:

1. Compared with the existing technology, the anchor-type corrugated sheet pile can be produced in a factory, the quality is controllable, the production efficiency is high, and the problems of environmental pollution and difficult quality control of the construction site are avoided, and its cross-sectional size is small, saving materials;

2. Compared with corrugated sheet pile support, it can make full use of the natural force of rock and soil, reduce the failure rate of sheet piles, reduce the horizontal deformation of sheet piles, and meet the design requirements;

3. Compared with bolt support, the excavation surface of the project can be set as a vertical surface, which reduces the amount of earthwork excavation, thus saving financial and material resources, and also reduces the environmental pollution caused by earthwork excavation, which fully responds The call for the construction of ecological civilization in our country;

4. The construction without internal support can be realized, which increases the excavation section and construction space, speeds up the construction efficiency and shortens the construction period.

Description of drawings

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

Figure 2 is a schematic cross-sectional view of a corrugated sheet pile.

detailed description

The utility model and the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. The described embodiments are only some embodiments of the utility model patent, not all of them.

Prestressed anchor corrugated sheet pile support structure, including corrugated sheet pile 1, anchor hole 2, anchor rod 3, the corrugated sheet pile 1 is a prestressed reinforced concrete structure, including a top plate 101, a web 102 and a bottom plate 103, the section The form is wavy, and the bottom plates 103 on both sides have a convex line and a groove respectively, with a built-in prestressed steel skeleton, the thickness is greater than 100mm, and the grade of concrete is not lower than C40; the top plate 101 is provided with anchor holes for anchor rods to pass through 2. The anchor hole is cylindrical, the diameter of the anchor hole is greater than 50mm, and the anchor hole 2 is provided with a reinforcement 4 to prevent the stress concentration of the corrugated sheet pile. The reinforcement 4 is coated with anti-corrosion and anti-rust paint, and the reinforcement 4 is steel pad;

Anchor rod 2 is made of single or multiple steel tendons using normal pressure and high pressure multiple grouting, including anchor section 201, non-anchor section 202 and anchor head 203. Anchor rod 2 passes through anchor hole 3, and through anchor head 203 The anchor rod 2 is connected to the corrugated sheet pile 1, the anchor section 201 of the anchor rod 2 is set in the stable soil layer, and the prestress applied to the anchor rod is determined according to the design requirements;

The anchor head 203 includes an anchor support 2031, an anchor 2032, a concrete anchor 2033, and a grouting hole 2034 for grouting into the anchor hole;

The anchor rod 2 passes through the outer surface of the corrugated sheet pile 1 and is sleeved with a corrugated steel pipe 5 and a spiral steel bar 6 .

The anchor rod can also be a high-strength steel rod or steel strand, which is grouted one or more times under normal pressure or high pressure.

The described embodiments are only some of the embodiments of the present utility model, but not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Claims (3)

1. prestressed anchor waveform sheet pile retaining structure, it is characterised in that include waveform sheet pile, anchor hole, anchor Bar, described waveform sheet pile is prestressed reinforced concrete structure, including top board, web and base plate, Section form is rendered as waveform, and both sides base plate is respectively provided with a raised line and groove, built-in prestressing force Framework of steel reinforcement, thickness is more than 100mm, and the grade of concrete is not less than C40；Top board is provided with confession The anchor hole that anchor pole passes, anchor hole is cylinder, and the diameter of anchor hole is more than 50mm, is provided with at anchor hole The intensive aspect preventing waveform sheet pile stress from concentrating, intensive aspect scribbles anti-corrosive antirusting paint；

Anchor pole is that a single or many tendon utilizes normal pressure and high pressure to be repeatedly in the milk to form, including anchoring section, Non-anchored section and anchor head, anchor pole passes anchor hole, anchor pole and waveform sheet pile is connected by anchor head, anchor The anchoring section of bar is arranged in steady soil, and determines anchor pole Shi Hanzhang by design requirement Size；

Described anchor head include anchor tiltedly hold in the palm, anchorage, concrete sealing off and covering anchorage and mend in anchor hole slurry benefit slurry hole；

Described anchor pole is socketed with waveform steel pipe and spiral reinforcement through the outer surface of waveform sheet pile.

Prestressed anchor waveform sheet pile retaining structure the most according to claim 1, it is characterised in that institute Stating intensive aspect is steel pad.

Prestressed anchor waveform sheet pile retaining structure the most according to claim 1, it is characterised in that institute Stating anchor pole and can also use high-strength steel bar or steel hank knotting, utilize normal pressure or high pressure, one or many fills Slurry forms.