CN114622770A

CN114622770A - Safety protection structure for foundation construction and construction method

Info

Publication number: CN114622770A
Application number: CN202210442923.7A
Authority: CN
Inventors: 李学龙
Original assignee: Beijing Jianda Hongtu Construction Engineering Co ltd
Current assignee: Beijing Jianda Hongtu Construction Engineering Co ltd
Priority date: 2022-04-26
Filing date: 2022-04-26
Publication date: 2022-06-14
Anticipated expiration: 2042-04-26
Also published as: CN114622770B

Abstract

The application relates to the field of foundation pit protection, and discloses a safety protection structure for foundation construction and a construction method, wherein the safety protection structure is formed by connecting guardrail structure units, each guardrail structure unit comprises a base station, a fixed expansion bolt, a telescopic guardrail and a connecting block, the base station is arranged around the adjacent edge of a foundation pit through the fixed expansion bolt, the telescopic guardrails are arranged on the base stations, and the telescopic guardrails of adjacent units are connected through the connecting blocks; the telescopic guardrail comprises side rods, a middle rod and a telescopic frame, the side rods and the middle rod are all arranged along the vertical direction, the side rods are respectively located on two sides of the telescopic guardrail, the middle rod is located between the side rods, the telescopic frame is installed between the side rods and the middle rod and between the adjacent middle rods, the telescopic frame is used for enabling the telescopic guardrail to extend or contract along a base station, a connecting plate is fixed to the lower end of each side rod, the connecting plate is connected with the base station in a threaded mode through bolts, and the main assembly of the protection structure can be recovered and recycled after being installed.

Description

Safety protection structure for foundation construction and construction method

Technical Field

The application relates to the field of foundation pit protection, in particular to a safety protection structure for foundation construction and a construction method.

Background

In the foundation construction of high-rise buildings, a foundation pit is often dug. Along with the standard of building construction, in order to ensure the smooth construction and safety of constructors, when the excavation depth of a foundation pit exceeds 2 meters or more, foundation pit guardrails must be installed around the foundation pit. The foundation pit guardrail not only can be used as a striking warning to prevent fragments from falling into the foundation pit, ensure the safety of constructors, but also can prevent a dangerous pit which is caused by the fact that an advancing vehicle is too close to the foundation pit and collapses.

In the prior art, a foundation pit edge protection structure is usually built on site, and a rail post are usually fixed by a fastener or electric welding through a pipe and are installed in a cast-in-place concrete base.

To the correlation technique among the above-mentioned, although on-spot lapped foundation ditch faces limit protective structure protective properties and can reach the standard, nevertheless the transportation and the transport of each subassembly are comparatively troublesome, simultaneously because the base station needs cast-in-place, railing and railing post need adopt tubular product fastener or electric welding, have protective structure's major component and be difficult to retrieve after the installation and the defect of reutilization.

Disclosure of Invention

In order to enable the main components of the protective structure to be recycled and reused after being installed, the application provides a foundation construction safety protective structure and a construction method.

In a first aspect, the application provides a safety protection structure for foundation construction, which adopts the following technical scheme:

a safety protection structure for foundation construction is formed by connecting guardrail structure units, wherein each guardrail structure unit comprises a base platform, a fixed expansion bolt, a telescopic guardrail and a connecting block, the base platform is arranged around the adjacent edge of a foundation pit through the fixed expansion bolt, the telescopic guardrails are arranged on the base platforms, and the telescopic guardrails of adjacent units are connected through the connecting blocks; the telescopic guardrail comprises side rods, middle rods and telescopic frames, the side rods and the middle rods are all arranged in the vertical direction, the side rods are located on two sides of the telescopic guardrail respectively, the middle rods are located between the side rods, the telescopic frames are installed between the side rods and the middle rods and between the adjacent middle rods, the telescopic frames are used for enabling the telescopic guardrail to extend or contract along a base station, the lower end of each side rod is fixed with a connecting plate, and the connecting plates are connected with the base station in a threaded mode through bolts.

Through adopting above-mentioned technical scheme, this protective structure comprises several guardrail unit, and flexible guardrail and base station are the assembly body, need not overlap joint at the scene, have reduced installation period. Simultaneously after stage time limit for a project finishes, the accessible is demolishd fixed bloated bolt and connecting block for flexible guardrail and base station can be by secondary recycle.

Optionally, the spout has all been seted up on every base station, and the spout is located the base station top and sets up along base station length trend, and every connecting plate below all is fixed with the movable pulley, and the movable pulley slide card inlays in the spout.

Through adopting above-mentioned technical scheme, the setting of spout and movable pulley for flexible guardrail can be fixed a position on the base station, has reduced the friction that flexible guardrail received in the installation on the base station simultaneously.

Optionally, an embedding groove is formed in each side rod, the embedding groove is used for enabling the connecting block to be embedded between adjacent side rods in a clamping mode, a connecting convex groove is formed in the connecting block, a connecting buckle is hinged to each side rod, and the connecting buckle and the connecting convex groove are connected through bolt threads.

Through adopting above-mentioned technical scheme, the setting in inlay card groove for the connecting block can be dismantled the replacement on adjacent limit pole, and limit pole and connecting block pass through the connector link to be connected simultaneously, makes above-mentioned connected mode be and to dismantle the connection, when can be inseparable with adjacent telescopic fence connection, has realized the secondary recycle of connecting block.

Optionally, a tensioning convex groove is formed in each connecting block, a tensioning mechanism is arranged on each connecting block and comprises a tensioning steel cable and a fixed anchor rod, one end of the tensioning steel cable is bound with the inclined tensioning convex groove, the other end of the tensioning steel cable is bound with the fixed anchor rod, the fixed anchor rod is driven into a foundation pit edge soil body, and the tensioning steel cable is always in a tensioning state.

Through adopting above-mentioned technical scheme, tensioning mechanism's setting for flexible guardrail is pulled to one side, has strengthened the overall stability of flexible guardrail installation.

Optionally, all be provided with dustproof mesh plate on every flexible guardrail, all seted up the mounting groove on the limit pole with the unit, the mounting groove is all along vertical setting and opposition each other, dustproof mesh plate inlay card in the mounting groove.

Through adopting above-mentioned technical scheme, because the setting of mounting groove for dustproof otter board can dismantle the replacement on flexible guardrail, dustproof otter board can prevent that the dust from spilling over from the foundation ditch simultaneously.

Optionally, each base station is provided with a side slope, and the side slopes are used for preventing chippings from falling into the foundation pit.

Optionally, a skirting board is fixed on each base station, the submitting plates are mounted on the side slope, and warning patterns are coated on the skirting boards and used for warning constructors to prevent falling.

In a second aspect, the present application provides, with the following technical solutions:

a construction method of a safety protection structure for foundation construction comprises the following steps:

s1, sequentially mounting base platforms around the adjacent edge of the foundation pit;

s2, sequentially positioning and installing telescopic guardrails;

s3, sequentially installing connecting blocks and connecting adjacent telescopic guardrails through the connecting blocks;

s4, sequentially mounting dust shields on the telescopic guardrails;

s5, sequentially mounting skirting boards on the side slopes;

and S6, sequentially installing tensioning mechanisms.

In summary, the present application includes at least one of the following beneficial technical effects:

1. this protective structure comprises several guardrail unit, and flexible guardrail and base station are the assembly body, need not at on-the-spot overlap joint, have reduced installation period. Meanwhile, after the stage construction period is finished, the telescopic guardrail and the base platform can be recycled for the second time by detaching the fixed expansion bolts and the connecting blocks;

2. the sliding groove and the sliding wheel are arranged, so that the telescopic guardrail can be positioned on the base platform, and friction on the base platform for installation of the telescopic guardrail is reduced.

3. The setting in inlay card groove for the connecting block can be dismantled the replacement on adjacent limit pole, and limit pole and connecting block pass through the connector link simultaneously and connect, makes above-mentioned connected mode be and can dismantle the connection, when can be inseparable with adjacent telescopic fence connection, has realized the secondary recycle of connecting block.

4. Due to the arrangement of the tensioning mechanism, the telescopic guardrail is obliquely pulled, and the overall stability of the installation of the telescopic guardrail is enhanced.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present application.

Fig. 2 is a schematic view for highlighting the telescopic fence.

Fig. 3 is a partially enlarged schematic view of a portion a in fig. 1.

Description of reference numerals: 1. a base station; 11. a chute; 12. side slope; 2. fixing the expansion bolt; 3. a telescopic guardrail; 31. a side bar; 311. a clamping groove; 312. mounting grooves; 32. a middle rod; 33. a telescopic frame; 34. a retractable wheel; 35. a sliding groove; 36. a connecting plate; 37. a sliding wheel; 38. a connecting buckle; 4. connecting blocks; 41. connecting the convex grooves; 42. tensioning the convex groove; 5. a tensioning mechanism; 51. stretching a steel cable; 52. fixing an anchor rod; 6. a dustproof screen plate; 7. a skirting board.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses foundation construction safety protection structure.

Referring to fig. 1, a ground construction safety protection structure comprises guardrail constitutional unit connection, and every guardrail constitutional unit all includes base station 1, flexible guardrail 3 and four fixed bolts 2 that expand, and fixed bolt 2 that expand all sets up along vertical direction, and is located the four corners department of base station 1 top lateral wall respectively, and fixed bolt 2 that expand is squeezed into and is inserted in the ground soil body after running through base station 1 for play the fixed action to base station 1. The telescopic guardrails 3 are installed on the base platform 1, the telescopic guardrails 3 of the adjacent units are connected with each other, the telescopic guardrails 3 are used for enclosing the edge of the foundation pit, and the telescopic guardrails 3 and the base platform 1 can be recycled.

Referring to fig. 1, a side slope 12 is formed on a base platform 1, the side slope 12 is respectively located on two sides of the base platform 1 facing and deviating from a foundation pit, an axial section of the base platform 1 is a trapezoid with a length of a bottom side larger than that of a top side, and the side slope 12 is used for placing chips above the foundation pit to fall into the foundation pit. Every base station 1 is last all to be provided with baseboard 7, and baseboard 7 welds on the side slope 12 of keeping away from the foundation ditch, and covers side slope 12, and baseboard 7 surface painting has the warning pattern that is used for warning operating personnel to keep away from the foundation ditch.

Referring to fig. 1 and 2, each telescopic fence 3 includes a plurality of side poles 31, a plurality of center poles 32, and a plurality of telescopic frames 33, and only 2

side poles

31, 2

center poles

32, and 3 telescopic frames 33 are shown in this embodiment as an illustration. Side bar 31, king-rod 32 and expansion bracket 33 all set up along vertical direction, and side bar 31 is located telescopic guardrail 3 respectively along 1 axial both sides of base station, and king-rod 32 is located between side bar 31, and arranges along 1 axial of base station, and expansion bracket 33 is located respectively between side bar 31 and rather than adjacent king-rod 32 to and between the king-rod 32 adjacent to each other. The expansion bracket 33 is X type support body, and wherein the intersect of X is the axis of rotation of expansion bracket 33, has all seted up sliding tray 35 on limit pole 31 and the king-rod 32, and sliding tray 35 sets up along vertical direction, and sliding tray 35 homonymy limit pole 31 and adjacent king-rod 32 to and the position on the upper side in the vertical lateral wall middle part that is close to each other between king-rod 32 and adjacent king-rod 32. The two end faces of the telescopic frame 33 far away from the ground are rotatably connected with telescopic wheels 34, the rotating shafts are arranged along the horizontal direction perpendicular to the axial direction of the base platform 1, and the telescopic wheels 34 respectively slide on the adjacent sliding grooves 35. Two end faces of the expansion bracket 33 close to the ground are hinged with the adjacent side rod 31 or middle rod 32, and the hinged shaft is arranged along the horizontal direction and vertical to the axial direction of the base 1. The telescopic frame 33 is provided so that the telescopic fence 3 can be extended or contracted in the axial direction of the base 1.

Referring to fig. 2, each base platform 1 is provided with a chute 11, the chute 11 is located on a side wall of the base platform 1 far away from the ground, and the chute 11 is arranged along the length direction of the side wall and is located in the middle of the side wall. And a connecting plate 36 is fixed on the end surface of each side rod 31 close to the ground, and the connecting plate 36 is arranged along the horizontal direction. A sliding wheel 37 is fixed on the side wall below each connecting plate 36, and the sliding wheel 37 is slidably inserted into the sliding groove 11. The telescopic guardrail 3 can be positioned and installed on the base platform 1 through the sliding of the pulleys on the sliding chute 11. After the position of the telescopic guardrail 3 is determined, the telescopic guardrail 3 is in threaded connection with the base platform 1 after penetrating through the connecting plate 36 through bolts, so that the position of the telescopic guardrail 3 on the base platform 1 is fixed.

Referring to fig. 1 and 2, each side rod 31 in each unit is provided with a mounting groove 312, the mounting grooves 312 are all formed along the vertical direction, and are located on the vertical side wall of the foundation pit far away from the side rod 31, and the notches of the mounting grooves 312 in the same unit are opposite to each other. Be provided with dustproof mesh board 6 on flexible guardrail 3, after flexible guardrail 3 installation finishes, dustproof mesh board 6 is installed in the one side that the foundation ditch was kept away from to flexible guardrail 3 through with mounting groove 312 inlay card. Dustproof otter board 6 is used for when playing the rail effect, can enclose the fender to the dust in the foundation ditch.

Referring to fig. 2 and 3, each side rod 31 is provided with an embedding groove 311, the embedding grooves 311 are respectively located on the side wall of the side rod 31 between adjacent units, and the part of the side rod 31 away from the ground is provided. Still be provided with connecting block 4 on the telescopic guardrail 3, connecting block 4 is located between the telescopic guardrail 3 of adjacent unit, and connecting block 4 inlay card simultaneously on the inlay card groove 311 between adjacent telescopic guardrail 3. All seted up 2 on every connecting block 4 and connected tongue 41, connect tongue 41 to be located the connecting block 4 and keep away from on the lateral wall on ground. Every side rod 31 all articulates on keeping away from the terminal surface on ground has connector link 38, and the articulated shaft direction sets up along the axial of horizontal direction perpendicular to base station 1, and the opening direction orientation of connector link 38 sets up towards the connecting block 4 that is close to. The connection buckles 38 are respectively buckled with the adjacent connection convex grooves 41 and are in threaded connection with the connection convex grooves 41 through bolts.

Referring to fig. 1 and 3, 2 tensioning mechanisms 5 are arranged on the telescopic frames of adjacent units, the tensioning mechanisms 5 are respectively located at two sides of the telescopic frames close to and far away from the foundation pit, and each tensioning mechanism 5 comprises a tensioning steel cable 51 and a fixed anchor rod 52. And a tensioning convex groove 42 is also formed in the connecting block 4, and the tensioning convex groove 42 is respectively positioned in the middle of two vertical side walls of the connecting block 4, which are close to and far away from the foundation pit. One end of the tension steel cable 51 is bound with the corresponding tension convex groove 42, and the other end is welded with the upper end face of the fixed anchor rod 52. The fixing anchor 52 is vertically disposed and driven into the soil body where the base 1 is located. The tension cable 51 is always in a diagonal tension state and is always in a tension state.

The embodiment of the application also discloses a construction method of the safety protection structure for foundation construction.

The method comprises the following steps:

s1, sequentially placing the base platform 1 around the adjacent edge of the foundation pit along the annular direction of the foundation pit, reserving a channel opening, and fixing the base platform 1 above the soil body through the fixed expansion bolt 2;

s2, sequentially positioning and installing the telescopic guardrail 3 on each base platform 1, and connecting the bolt through the connecting plate 36 with the base platform 1 in a threaded manner to fix the telescopic guardrail 3 on the base platform 1;

s3, sequentially clamping and embedding the connecting blocks 4 on the telescopic guardrails 3 between the adjacent units, buckling the connecting buckles 38 with the adjacent connecting convex grooves 41, connecting the connecting buckles through bolts and threads, and then installing an access door at a reserved passage;

s4, sequentially clamping and embedding the dustproof mesh plate 6 on the telescopic guardrail 3 in each unit;

s5, sequentially placing skirting boards 7 on the base platform 1 in each unit, and welding the skirting boards 7 and the side slopes 12 after the skirting boards 7 are attached to the side slopes 12 far away from the foundation pit;

s6, sequentially binding the tension steel cable 51 on each tension convex groove 42, and welding a fixed anchor rod 52 at the other end of each tension steel cable 51 to enable the tension steel cable 51 to be in a diagonal tension state, and then vertically driving the fixed anchor rod 52 into the soil body where the base station 1 is located.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: equivalent changes in structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a foundation construction safety protection structure which characterized in that: the guardrail structure unit is formed by connecting guardrail structure units, each guardrail structure unit comprises a base platform (1), a fixed expansion bolt (2), a telescopic guardrail (3) and a connecting block (4), the base platform (1) is installed around the adjacent edge of a foundation pit through the fixed expansion bolt (2), the telescopic guardrails (3) are installed on the base platform (1), and the telescopic guardrails (3) of adjacent units are connected through the connecting blocks (4); telescopic guardrail (3) are including limit pole (31), well pole (32) and expansion bracket (33), limit pole (31) and well pole (32) all set up along vertical direction, and limit pole (31) are located telescopic guardrail (3) both sides respectively, well pole (32) are located between limit pole (31), expansion bracket (33) are installed between limit pole (31) and well pole (32) and between adjacent well pole (32), expansion bracket (33) are used for making telescopic guardrail (3) extend or contract along base station (1), every limit pole (31) lower extreme all is fixed with connecting plate (36), connecting plate (36) pass through bolt and base station (1) threaded connection.

2. A safety shield structure for foundation works as claimed in claim 1, wherein: every spout (11) have all been seted up on base station (1), spout (11) are located base station (1) top and offer along base station (1) length trend, and every connecting plate (36) below all is fixed with movable pulley (37), and movable pulley (37) slide clamp inlays in spout (11).

3. A safety shield structure for foundation works as claimed in claim 2, wherein: every inlay card groove (311) have all been seted up on limit pole (31), inlay card groove (311) are used for making connecting block (4) inlay card between adjacent limit pole (31), have seted up on connecting block (4) and have connected tongue (41), all articulate on every limit pole (31) has connector link (38), and bolt threaded connection is passed through with connection tongue (41) in connector link (38).

4. A safety shield structure for foundation works as claimed in claim 1, wherein: every stretch-draw tongue (42) have all been seted up on connecting block (4), all be provided with stretch-draw mechanism (5) on every connecting block (4), stretch-draw mechanism (5) are including stretch-draw steel cable (51) and fixed stock (52), stretch-draw steel cable (51) one end with draw the tongue ligature to one side, the other end and fixed stock (52) ligature, fixed stock (52) are squeezed into in the foundation ditch faces the limit soil body, and stretch-draw steel cable (51) are in the tensioning state all the time.

5. A safety shield structure for foundation works as claimed in claim 4, wherein: every all be provided with dustproof otter board (6) on telescopic guardrail (3), all seted up mounting groove (312) on limit pole (31) with the unit, vertical setting and opposition each other are all followed in mounting groove (312), and dustproof otter board (6) inlay card is in mounting groove (312).

6. A safety shield structure for foundation works as claimed in claim 1, wherein: every side slope (12) have all been seted up on base station (1), side slope (12) are used for preventing the piece to fall into the foundation ditch.

7. A safety shield structure for foundation works as claimed in claim 1, wherein: every all be fixed with baseboard (7) on base station (1), submit the board and all install on side slope (12), scribble on baseboard (7) and be equipped with the warning pattern for it prevents falling to warn the constructor.

8. A construction method of a safety protection structure for foundation construction is characterized by comprising the following steps: the method comprises the following steps:

s1, sequentially installing base platforms (1) around the adjacent edge of the foundation pit;

s2, sequentially positioning and installing telescopic guardrails (3);

s3, sequentially installing connecting blocks (4) and connecting adjacent telescopic guardrails (3) through the connecting blocks (4);

s4, sequentially mounting dust shields on the telescopic guardrails (3);

s5, sequentially mounting skirting boards (7) on the side slopes (12);

and S6, sequentially installing tensioning mechanisms (5).