CN217500173U

CN217500173U - Water stop H-shaped steel joint for underground continuous wall

Info

Publication number: CN217500173U
Application number: CN202220043216.6U
Authority: CN
Inventors: 李炳阳; 李贺; 吴卫; 侯锐; 杨文芳; 赵佳祥; 田小孟; 王亚杰
Original assignee: Beijing Municipal Construction Co Ltd; Beijing No 4 Municipal Construction Engineering Co Ltd
Current assignee: Beijing Municipal Construction Co Ltd; Beijing No 4 Municipal Construction Engineering Co Ltd
Priority date: 2022-01-10
Filing date: 2022-01-10
Publication date: 2022-09-27
Anticipated expiration: 2032-01-10

Abstract

The utility model discloses an underground continuous wall stagnant water "H" shaped steel connects, connect its characterized in that including the steel that the bar metal welding formed: the steel joint comprises two strip metals with equal length and one strip metal with relatively longer length; the two strip metals with the same length are fixedly and transversely welded at two ends of the longer metal strip. The construction quality of the underground diaphragm wall is improved, the water-stopping and anti-seepage effects are better, and the safety of foundation pit construction is ensured. Meanwhile, the construction period and the cost waste caused by the concrete streaming are reduced in the construction process, and the environment-friendly benefit is higher.

Description

Water stop H-shaped steel joint for underground continuous wall

Technical Field

The utility model relates to an equipment technical field for the building engineering specifically is an underground continuous wall stagnant water "H" shaped steel connects.

Background

Underground continuous walls are foundation works. During construction, a long and narrow deep groove is excavated on the ground by adopting a groove excavating machine along the peripheral axis of the deep excavation project under the condition of mud wall protection. After the groove is cleaned, a reinforcement cage is hoisted in the groove, and then underwater concrete is poured by a guide pipe method to form a unit groove section. The construction is carried out section by section, and a continuous reinforced concrete wall is built underground and serves as a water interception, seepage prevention, bearing and water retaining structure. The underground continuous wall is suitable for pump stations and water pools; building foundation pits; underground oil depots and warehouses; municipal pipe ditches and culverts; vertical shafts for shield and other projects; various deep foundations and pile foundations; docks, revetments and dry docks; water conservancy and hydropower, open mines and tailings dams and impervious walls of environmental protection projects; underground structures), etc.

Generally, underground diaphragm walls adopt a sectional grooving construction process, joints exist between each wall, and flexible joints such as circular locking pipe joints and corrugated pipe joints or cross steel plate rigid joints are adopted in the past. The round locking pipe joint has the advantages of simple structure, mature process, convenient construction, easy wall brushing, low cost and large-scale use. However, the flexible joint has poor rigidity, is easy to deform and leak, and for ultra-deep foundation pits, particularly in areas with rich water content, the underground wall bears huge water and soil pressure, and if the enclosure mechanism deforms too much and leaks water seriously, major foundation pit accidents can be caused. The cross steel plate joint has better water stopping effect than a flexible joint, but has complex structure, large construction difficulty and higher cost, and has larger risk in pulling out the locking notch pipe.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an underground continuous wall stagnant water "H" shaped steel connects has improved underground continuous wall's construction quality, has better stagnant water and antiseep effect, has guaranteed foundation ditch construction's safety. Meanwhile, the construction period and cost waste caused by concrete streaming are reduced in the construction process, higher environmental protection benefits are achieved, and the problems in the prior art are solved.

In order to achieve the above purpose, the utility model provides a following technical scheme: a water stop H-shaped steel joint for an underground continuous wall comprises a steel joint formed by welding strip-shaped metals, wherein the steel joint comprises two strip-shaped metals with equal length and one strip-shaped metal with relatively longer length; the two strip metals with the same length are fixedly and transversely welded at two ends of the longer metal strip.

Preferably, the whole steel joint is made of steel sections with the thickness of 10 mm.

Preferably, the two strip metals with equal length are 350mm in length and are used as wing plates of the H-shaped joint.

Preferably, the two strip metals with the same length are transversely welded at two ends of the longer strip metal, the length of one side of the welding point is 150mm, the length of the other side of the welding point is 200mm, and the welding seam of the welding point is larger than or equal to 8 mm.

Preferably, the longer metal strip is 844mm or 644mm in length.

Compared with the prior art, the beneficial effects of the utility model are as follows: the H-shaped steel joint can transmit horizontal pulling force and longitudinal and transverse shearing force, has high rigidity and strong deformation resistance, is easier to brush the wall than a cross steel plate joint in the grooving process, has the longest water seepage path compared with other joints, has good water stopping effect, and can better solve the problem of confined water. The H-shaped steel is set to be not pulled out and is welded with the horizontal rib of the underground continuous wall reinforcement cage, so that the risk problem of pulling out the fore shaft pipe is effectively solved, and the water stopping effect is enhanced.

Drawings

Fig. 1 is an overall structure diagram of the present invention.

Fig. 2 is a welding view of the present invention and a continuous wall.

The figures are labeled as follows:

1. a long metal strip; 2. a strip metal; 3. welding seams;

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the scope of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Referring to fig. 1-2, an underground diaphragm wall water stop H-shaped steel joint includes a steel joint formed by welding strip-shaped metals, and is characterized in that: the steel joint comprises two strip metals with equal length and one strip metal with relatively longer length; the two strip metals with the same length are fixedly and transversely welded at two ends of the longer metal strip.

The whole steel joint is made of steel sections with the thickness of 10 mm.

The length of the two strip metals with the same length is 350mm, and the strip metals are used as wing plates of the H-shaped joint.

Two bar metals that length equals are transversely welded at the both ends of longer bar metal, and welding point one side length is 150mm, and the opposite side is 200mm, and welding point welding seam more than or equal to 8 mm.

The longer metal strip has a length of 844mm or 644 mm.

During construction, according to the corresponding characteristics of a sandy gravel stratum, a deeper foundation pit is excavated, water pressure borne by an underground wall is larger, and underground water easily leaks from a relatively weak joint, the engineering underground continuous wall is designed to be 1000mm (part 800mm) thick, an H-shaped steel joint is made of steel with the thickness of 10mm, a welding line is larger than or equal to 8mm, the width is 844mm (part 644mm), the length of one side of an H-shaped wing plate is 150mm, and the length of the other side of the H-shaped wing plate is 200 mm.

The joint between the groove sections adopts the connection mode of an H-shaped steel joint, and one side of the H-shaped steel joint is welded with the steel bar of the first applied groove section (double female groove sections) into a whole to be hung when a male-female joint steel bar cage is processed. The H-shaped steel joint and the horizontal ribs of the continuous wall steel reinforcement cage are welded by 100mm in a double-sided welding mode, the welding line is larger than or equal to 8mm, and the H-shaped steel joint and the rear construction groove section steel reinforcement cage guarantee a net distance of 52 mm.

The joint is provided with a winding-proof iron sheet plate, the winding-proof iron sheet plate is 0.5mm thick and 800mm wide, a reinforcing steel bar with the diameter of 10mm is pressed on the H-shaped steel joint and welded with the shaped steel, and electric welding is adopted for welding.

Meanwhile, the joint type of the underground diaphragm wall adopts H-shaped steel connection; the H-shaped steel joint is not pulled out and is welded with the continuous wall reinforcement cage into a whole; connect the department and set up the iron skin board of preventing the streaming as the measure of preventing the streaming, underground continuous wall connects the structure and is the key of underground continuous wall construction, also be envelope's weak link, connect through adopting underground continuous wall 10mm "H" shaped steel and can transmit horizontal pulling force and vertical and horizontal shear force, and "H" type connects rigidity big, possess stronger anti deformability, it is easier than cross steel joint to brush the wall among the grooving process, it is longest to connect the water seepage path to compare other types simultaneously, the stagnant water effect is better, can solve the confined water problem betterly. The H-shaped steel is welded with the reinforcement cage of the underground continuous wall without being pulled out, so that the risk problem of pulling out the locking notch pipe is effectively solved, and the water stopping effect is enhanced; meanwhile, the iron sheet anti-streaming plate is arranged at the joint, so that the problem of concrete streaming is solved.

Having shown and described the basic principles and principal features of the invention and advantages thereof, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof; the present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides an underground continuous wall stagnant water "H" shaped steel connects, includes the steel joint that the bar metal welding formed, its characterized in that: the steel joint comprises two strip metals with equal length and one strip metal with relatively longer length; the two strip metals with the same length are fixedly and transversely welded at two ends of the longer metal strip.

2. The underground continuous wall water stop H-shaped steel joint as claimed in claim 1, wherein: the whole steel joint is made of steel sections with the thickness of 10 mm.

3. The underground continuous wall water stop H-shaped steel joint as claimed in claim 1, wherein: the length of the two strip metals is 350mm, and the two strip metals are used as wing plates of the H-shaped joint.

4. The underground continuous wall water stop H-shaped steel joint as claimed in claim 1 or 3, wherein: two bar metals that length equals are transversely welded at the both ends of long metal strip, and welding point one side length is 150mm, and the opposite side is 200mm, and welding point welding seam more than or equal to 8 mm.

5. The underground continuous wall water stop H-shaped steel joint as claimed in claim 1, wherein: the length of the long metal strip is 844mm or 644 mm.