CN209873807U - A Suspension Structure for Underground Socket Concrete Pipes in Deep Foundation Pit Engineering - Google Patents

Abstract

A suspension structure of a deep foundation pit engineering underground socket concrete pipe is characterized in that a socket concrete pipe joint is wrapped through a reinforced concrete hoop, the socket concrete pipe is suspended on a steel box girder above the socket concrete pipe through a steel wire rope pre-embedded in the reinforced concrete hoop, the steel wire rope is tightened through a wire tightening buckle and a clamping head, suspension stress conversion is completed, when the suspension structure is implemented, foundation pit earthwork is excavated to the bottom of the underground socket concrete pipe, a groove is dug at the joint of the underground socket concrete pipe, circumferential main ribs, longitudinal and horizontal distribution ribs and a template are installed, the steel wire rope is pre-embedded, and then the reinforced concrete hoop is poured; installing and erecting a steel box girder on the foundation pit support structure; the steel wire rope is hung to the steel box girder, and the steel wire rope is tightened through the wire tightening buckle and the chuck, so that the stress conversion of the socket concrete pipe hanging is completed; after the stress conversion is completed, digging out all soil below the socket concrete pipe; and a plurality of suspension structures between the foundation pit enclosing structures form a suspension system.

Description

A Suspension Structure for Underground Socket Concrete Pipes in Deep Foundation Pit Engineering

technical field

The utility model relates to the technical field of pipeline suspension protection construction in deep foundation pit engineering, in particular to a suspension structure for underground concrete pipes in deep foundation pit engineering.

Background technique

In the construction of municipal deep foundation pit engineering, the situation of underground pipelines is complicated, and the method of in-situ suspension protection is generally adopted for the pipelines crossing the foundation pit.

Since the socket concrete pipe is a soft joint, it is prone to deformation and damage, resulting in flooding of the foundation pit and causing safety accidents in the foundation pit. The current common practice is to use the pipe jacking method to convert concrete pipes into steel pipes and then suspend them. This method not only has high construction costs, but also has a great impact on the construction period.

Contents of the invention

In order to overcome the deficiencies of the above-mentioned prior art, the purpose of the utility model is to provide a suspension structure for socketing concrete pipes underground in deep foundation pit engineering, without replacing the concrete pipes with steel pipes. Through the use of cast-in-place reinforced concrete pipe hoops, the soft joints of socketed concrete pipes are converted into rigid joints, and then suspended, which has the characteristics of simple operation, safe use and cost saving. The utility model can be applied to the suspension protection construction of various underground socket concrete pipes.

In order to achieve the above object, the technical solution adopted by the utility model is:

A suspension structure for underground socket concrete pipes in deep foundation pit engineering, including tight wire buckles, wrapping the socket concrete pipe joints through reinforced concrete hoops, and inserting concrete pipes through steel wire ropes pre-buried in the reinforced concrete hoops It is suspended on the steel box girder above it, and the steel wire rope is tightened by tightening the wire buckle and the chuck to complete the suspension force conversion.

The above-mentioned suspension system for socketing concrete pipes in deep foundation pit engineering is characterized in that the joints of socketed concrete pipes are wrapped by the reinforced concrete hoop, so that the flexible joints of socketed concrete pipes can be converted For rigid joints.

The reinforced concrete hoop is formed by pouring concrete into the steel skeleton inside it, and the steel skeleton includes the main reinforcement arranged in the circumferential direction and the longitudinal and horizontal distribution reinforcement.

The beneficial effects of the utility model are:

The utility model has the characteristics of simple operation, safe use, and cost saving. Compared with the conventional system, it only needs to process the joint of the socket concrete pipe, and does not need the process of pipe jacking conversion, which saves the construction cost and is easy to operate. Easy to use and fast construction. It is suitable for the suspension protection construction of various underground socket concrete pipes.

Description of drawings

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

Fig. 2 is the system schematic diagram of the utility model;

Fig. 3 is a large sample diagram of the reinforced concrete hoop structure of the present utility model

Among them, 1 is a tight wire buckle; 2 is a clip; 3 is a steel wire rope; 4 is a reinforced concrete hoop; 5 is a steel box girder; 6 is a socket concrete pipe; 7 is a foundation pit enclosure structure.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described:

As shown in Fig. 1, Fig. 2 and Fig. 3, a suspension structure for underground socket concrete pipes in deep foundation pit engineering, including a tight wire buckle 1, is characterized in that 6 joints of socket concrete pipes are inserted through reinforced concrete hoops 4 Wrapping, suspending the socket concrete pipe 6 on the steel box girder 5 above it through the steel wire rope 3 pre-embedded in the reinforced concrete hoop 4, and tightening the steel wire rope 3 through the tightening wire buckle 1 and the chuck 2 to complete Suspension force conversion.

The reinforced concrete hoop 4 wraps the joint of the socketed concrete pipe 6, so that the flexible joint of the socketed concrete pipe 6 is converted into a rigid joint.

The reinforced concrete hoop 4 is formed by pouring concrete into the steel skeleton inside it, and the steel skeleton includes a hoop main reinforcement 7 and a longitudinal horizontal distribution reinforcement 8 .

The wrapping length of the reinforced concrete hoop 4 to the joint of the socket concrete pipe 6 should not be less than 50 cm, and the minimum thickness should not be less than 30 cm.

A construction method for a suspension structure of underground socket concrete pipes in deep foundation pit engineering, comprising the following steps:

Step 1: Excavate the earthwork of the foundation pit to the bottom of the underground socket pipe, excavate a trench at the joint of the underground socket concrete pipe 6, install the circumferential main reinforcement 7, the longitudinal horizontal distribution reinforcement 8, the formwork, and pre-embed the steel wire rope 3, Then pouring reinforced concrete hoop 4;

Step 2: installing and erecting the steel box girder 5 on the foundation pit enclosure structure 7;

Step 3: Suspend the steel wire rope 3 to the steel box girder 5, tighten the steel wire rope 3 through the tightening buckle 1 and the clip 2, and complete the force conversion of the suspension of the socket concrete pipe 6;

Step 4: After the force conversion is completed, all the soil below the socket concrete pipe 6 is excavated;

Step 5: Multiple suspension structures between foundation pit enclosure structures 7 constitute a suspension system.

Claims (4)

1. A suspension structure for underground socket concrete pipes in deep foundation pit engineering, including tight wire buckles (1), characterized in that the joints of socket concrete pipes (6) are wrapped by reinforced concrete hoops (4), and the joints of socket concrete pipes (6) are wrapped by The steel wire rope (3) pre-buried in the reinforced concrete hoop (4) suspends the socket concrete pipe (6) on the steel box girder (5) above it, and passes the tight wire buckle (1), the clamp ( 2) Tighten the wire rope (3) to complete the suspension force conversion. 2. The suspension structure for underground socket concrete pipes in deep foundation pit engineering according to claim 1, characterized in that the reinforced concrete hoop (4) wraps the joints of socket concrete pipes (6), Convert the flexible joint of the socket concrete pipe (6) into a rigid joint. 3. The suspension structure for underground socket concrete pipes in deep foundation pit engineering according to claim 1, characterized in that the reinforced concrete hoop (4) is formed by pouring concrete into the steel skeleton inside it, and the steel bars The skeleton includes circumferential main ribs (7) and longitudinal horizontal distribution ribs (8). 4. The suspension structure for underground socket concrete pipes in deep foundation pit engineering according to claim 1, characterized in that the said reinforced concrete hoop (4) wraps the joints of socket concrete pipes (6) The length should not be less than 50cm, and the minimum thickness should not be less than 30cm.