CN212316968U - Assembly type strip foundation for foundation pit edge protection - Google Patents

Abstract

The utility model relates to a foundation ditch faces limit protection assembled strip base, include: prefabricated strip base fixed knot constructs, first prefabricated section and second prefabricated section connection structure and cable shelving crane span structure connection structure. The utility model has the advantages that: the utility model adopts the prefabricated block tongue-and-groove bolt connection to form the prefabricated strip base, thereby realizing the assembly type construction of the foundation pit edge protection and greatly improving the construction efficiency of the foundation pit edge protection; the utility model realizes the rapid and accurate laying of the precast block by arranging the positioning edge on the expanding bottom plate under the precast strip base; the utility model has the advantages that the pre-buried screw is used for connecting the foundation pit crown beam with the prefabricated bar base, so that the stability of the prefabricated bar base is greatly improved; the utility model discloses the crane span structure is shelved to the cable that the strip base inboard set up, and the segmentation sets up a plurality of crane span structure upper covers on the crane span structure, has realized the quick switch of crane span structure upper cover through setting up crane span structure upper cover hasp, has effectively guaranteed the safety of cable through setting up the cable protection pipe.

Description

Assembly type strip foundation for foundation pit edge protection

Technical Field

The utility model relates to a foundation ditch faces limit protection assembled strip base belongs to foundation ditch protection engineering technical field.

Background

Safe production and civilized construction are always permanent subjects of engineering construction, but in recent years, safety accidents frequently occur on construction sites, wherein high-altitude falling accidents occur most frequently and have the greatest danger. Particularly, a high-place falling accident in the foundation pit earth excavation stage does not cause enough attention of field construction personnel, the enclosure around the foundation pit is not in place, the enclosure erection is not in accordance with the standard, the phenomenon that the enclosure guardrail rod is loosened or detached is repeated, and the high-place falling accident is a great potential threat in the foundation pit excavation stage. Once an accident occurs, not only is extremely bad influence on the society caused, but also the brand image of an enterprise is seriously damaged.

At present, most of the near-edge enclosure of the foundation pit of the construction project adopts a steel pipe fastener type enclosure form, the enclosure form has poor operability and low safety, and is often easily dismounted in the construction process, the enclosure has short timeliness, and the enclosure cannot effectively play a role of safety protection. Meanwhile, the long-time wind blowing and rain showering steel pipe fastener type enclosure dense mesh net is full of the mesh and the bruised and unsmooth, so that the whole image of the project is seriously influenced. The adoption of the assembly type strip foundation for the near-edge protection of the foundation pit is an effective measure for solving the problem.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming not enough among the prior art, improve a foundation ditch and face limit protection assembled strip base.

The foundation pit edge-facing protection assembly type strip foundation comprises a prefabricated strip foundation fixing structure, a first prefabricated block and second prefabricated block connecting structure and a cable laying bridge connecting structure;

according to the prefabricated bar foundation fixing structure, a bar foundation expansion bottom plate is laid on a soil body and fixed in the soil body through soil nails, a positioning edge is arranged on the bar foundation expansion bottom plate, the prefabricated bar foundation is formed by connecting a first prefabricated block and a second prefabricated block, and a foundation pit crown beam embedded screw rod on a foundation pit crown beam is connected with the first embedded screw rod through a connecting sleeve to fix the prefabricated bar foundation;

the first precast block and the second precast block at the corner of the precast strip base are fixedly connected through the second gasket, the second nut and the embedded bolt;

the cable shelving bridge connecting structure is characterized in that a supporting arm is arranged below a cable shelving bridge, the supporting arm is fixed on the inner side surface of a prefabricated strip base through a first gasket, a first nut and a second embedded screw, a cable protected by a protection pipe is placed in the cable shelving bridge, the bottom surface of the cable shelving bridge is provided with a bridge bottom surface hole, the side surface of the cable shelving bridge is provided with a bridge side surface hole, a plurality of bridge upper covers are arranged on the cable shelving bridge in a segmented mode, and the bridge upper covers realize the opening and closing of the cable shelving bridge through hinges and bridge upper cover lock catches.

Preferably, the method comprises the following steps: preformed holes are respectively formed in preformed block grooves and tongues on two sides of the first preformed block, and a steel sleeve and a replaceable fixing screw are embedded in a strip foundation on the upper portion of the first preformed block.

Preferably, the method comprises the following steps: the prefabricated block groove on one side of the second prefabricated block is provided with a reserved hole, the prefabricated block groove on the other side of the second prefabricated block is provided with an embedded bolt, and a strip base embedded steel sleeve and a replaceable fixing screw are embedded in the upper portion of the second prefabricated block.

Preferably, the method comprises the following steps: the crane span structure upper cover hasp include lock club, lock pipe, shift knob and lockhole, the lock pipe is connected with the lockhole cooperation, is equipped with lock club on the lock pipe, the lockhole outer wall is equipped with shift knob.

The utility model has the advantages that:

(1) the utility model discloses a prefabricated strip base is constituteed in prefabricated section tongue-and-groove bolted connection, has realized that the foundation ditch faces the assembled construction of limit protection, has improved the foundation ditch greatly and has faced limit protection efficiency of construction.

(2) The utility model discloses a set up the location limit on enlarging the bottom plate under prefabricated strip base, realized the quick accurate laying of prefabricated section.

(3) The utility model discloses a pre-buried screw rod is connected foundation ditch crown beam and prefabricated strip base, very big improvement the steadiness of prefabricated strip base.

(4) The utility model discloses the crane span structure is shelved to the cable that the strip base inboard set up, and the segmentation sets up a plurality of crane span structure upper covers on the crane span structure, has realized the quick switch of crane span structure upper cover through setting up crane span structure upper cover hasp, has effectively guaranteed the safety of cable through setting up the cable protection pipe.

Drawings

FIG. 1 is a schematic view of a partial structure of a fabricated strip foundation for the near-edge protection of a foundation pit;

FIG. 2 is a plan view of a base of the assembled strip for the near-edge protection of the foundation pit;

FIG. 3 is a schematic diagram of a large pattern D in FIG. 2;

FIG. 4 is a schematic diagram of a large sample C in FIG. 2;

FIG. 5 is a schematic diagram of the structure of the larger sample B in FIG. 2;

FIG. 6 is a cross-sectional view of a first preform block;

FIG. 7 is a cross-sectional view of a second preform block;

FIG. 8 is a schematic diagram of a large sample of the structure of FIG. 1;

FIG. 9 is a schematic view of the bottom surface of the cable lay-up tray;

FIG. 10 is a detail view of a cable lay-up tray partial structure (closed);

figure 11 is a schematic view of a cable lay-up cable partial configuration (open state).

Description of reference numerals: 1-prefabricated bar foundation, 2-bar foundation enlarged bottom plate, 3-positioning edge, 4-soil body, 5-foundation pit crown beam, 6-foundation pit crown beam embedded screw, 7-first embedded screw, 8-soil nail, 9-prefabricated block rabbet, 10-cable laying bridge frame, 11-connecting screw, 12-second gasket, 13-second nut, 14-first prefabricated block, 15-second prefabricated block, 16-embedded bolt, 17-reserved hole, 18-bridge frame side hole, 19-bracket, 20-first gasket, 21-first nut, 22-second embedded screw, 23-cable laying bridge frame bottom surface, 24-bridge frame bottom surface hole, 25-hinge, 26-bridge frame upper cover and 27-bridge frame upper cover lock catch, 28-lock stile, 29-lock tube, 30-switch button, 31-lock hole, 32-protection tube, 33-cable, 34-connecting sleeve, 35-strip-base embedded steel sleeve and 36-replaceable fixing screw rod.

Detailed Description

The present invention will be further described with reference to the following examples. The following description of the embodiments is merely provided to aid in understanding the invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

As shown in fig. 1 to 11, the assembly type strip foundation for the near-edge protection of the foundation pit comprises a prefabricated strip foundation fixing structure, a first prefabricated block and second prefabricated block connecting structure, and a cable laying bridge connecting structure.

Prefabricated bar base fixed knot construct, lay bar base expansion bottom plate 2 on the soil body 4, bar base expansion bottom plate 2 is fixed in the soil body 4 through soil nail 8, be equipped with on the bar base expansion bottom plate 2 and fix a position limit 3 and be used for hoisting prefabricated bar base's first prefabricated section 14 and second prefabricated section 15, prefabricated bar base 1 is connected by first prefabricated section 14 and second prefabricated section 15 and forms, foundation ditch crown beam embedded screw 6 on foundation ditch crown beam 5 is connected with fixed prefabricated bar base 1 through connecting sleeve 34 with first embedded screw 7.

First prefabricated section and second prefabricated section connection structure, connect fixedly through connecting screw 11, second gasket 12 and second nut 13 between the first prefabricated section 14, connect fixedly through connecting screw 11, second gasket 12 and second nut 13 between first prefabricated section 14 and the second prefabricated section 15, connect fixedly through second gasket 12, second nut 13 and buried bolt in advance between first prefabricated section 14 and the second prefabricated section 15 of prefabricated strip base 1 corner.

According to the cable laying bridge connecting structure, a supporting arm 19 is arranged below a cable laying bridge 10, the supporting arm 19 is fixed on the inner side face of a prefabricated strip base 1 through a first gasket 20, a first nut 21 and a second embedded screw 22, a cable 33 protected by a protection pipe 32 is placed in the cable laying bridge 10, a bridge bottom face hole 24 is formed in the cable laying bridge bottom face 23, a bridge side face hole 18 is formed in the cable laying bridge side face, a plurality of bridge upper covers 26 are arranged on the cable laying bridge in a segmented mode, and the cable laying bridge 10 is opened and closed through hinges 25 and bridge upper cover lock catches 27 by the bridge upper covers 26.

Preformed block tongue-and-groove 9 on both sides of first preformed block 14 on set up respectively and reserve hole 17, the pre-buried steel sleeve 35 of pre-buried bar base and removable fixed screw 36 of first preformed block 14 upper portion.

The prefabricated block rabbet 9 on one side of the second prefabricated block 15 is provided with a reserved hole 17, the prefabricated block rabbet 9 on the other side is provided with an embedded bolt 16, and a strip-based embedded steel sleeve 35 and a replaceable fixing screw 36 are embedded in the upper part of the second prefabricated block 15.

The bridge upper cover lock catch 27 comprises a lock stile 28, a lock tube 29, a switch button 30 and a lock hole 31, the lock tube 29 is connected with the lock hole 31 in a matched mode, the lock stile 28 is arranged on the lock tube 29, and the switch button 30 is arranged on the outer wall of the lock hole 31. The lock tube 29 is inserted into the lock hole 31, the lock stile 28 is pushed out to close the bridge upper cover lock 27, and the bridge upper cover lock 27 can be opened by pressing the switch button 30.

Claims (4)

1. A foundation pit edge-facing protection assembly type strip foundation is characterized by comprising a prefabricated strip foundation fixing structure, a first prefabricated block and second prefabricated block connecting structure and a cable laying bridge connecting structure;

according to the prefabricated bar base fixing structure, a bar base expanding bottom plate (2) is laid on a soil body (4), the bar base expanding bottom plate (2) is fixed in the soil body (4) through soil nails (8), a positioning edge (3) is arranged on the bar base expanding bottom plate (2), the prefabricated bar base (1) is formed by connecting a first prefabricated block (14) and a second prefabricated block (15), and a foundation pit crown beam embedded screw (6) on a foundation pit crown beam (5) is connected with a first embedded screw (7) through a connecting sleeve (34) so as to fix the prefabricated bar base (1);

the first precast block and the second precast block are connected and fixed through a connecting screw rod (11), a second gasket (12) and a second nut (13) between the first precast block (14), the first precast block (14) and the second precast block (15) are connected and fixed through a connecting screw rod (11), a second gasket (12) and a second nut (13), and the first precast block (14) and the second precast block (15) at the corner of the precast strip base (1) are connected and fixed through a second gasket (12), a second nut (13) and an embedded bolt (16);

the cable laying bridge connecting structure is characterized in that a supporting arm (19) is arranged below a cable laying bridge (10), the supporting arm (19) is fixed on the inner side face of a prefabricated strip base (1) through a first gasket (20), a first nut (21) and a second embedded screw (22), a cable (33) protected by a protection pipe (32) is placed in the cable laying bridge (10), a bridge bottom face hole (24) is formed in the cable laying bridge bottom face (23), a bridge side face hole (18) is formed in the cable laying bridge side face, a plurality of bridge upper covers (26) are arranged on the cable laying bridge in a segmented mode, and the cable laying bridge (10) is opened and closed through hinges (25) and bridge upper cover buckles (27) by the aid of the bridge upper covers (26).

2. The foundation pit edge-protective assembled strip foundation as claimed in claim 1, wherein the prefabricated block rabbet (9) at two sides of the first prefabricated block (14) are respectively provided with a reserved hole (17), and a strip foundation embedded steel sleeve (35) and a replaceable fixing screw (36) are embedded at the upper part of the first prefabricated block (14).

3. The foundation pit edge-facing protective assembly type strip foundation as claimed in claim 1, wherein a preformed hole (17) is formed in a preformed block rabbet (9) on one side of the second preformed block (15), an embedded bolt (16) is arranged on the preformed block rabbet (9) on the other side, and a strip foundation embedded steel sleeve (35) and a replaceable fixing screw (36) are embedded in the upper portion of the second preformed block (15).

4. The foundation pit edge-facing protective assembly type strip foundation as claimed in claim 1, wherein the bridge upper cover lock catch (27) comprises a lock stile (28), a lock tube (29), a switch button (30) and a lock hole (31), the lock tube (29) is connected with the lock hole (31) in a matching manner, the lock stile (28) is arranged on the lock tube (29), and the switch button (30) is arranged on the outer wall of the lock hole (31).

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