Foundation pit support and reinforcement device and construction method thereof

Abstract

The present invention relates to the technical field of foundation pit support, and discloses a foundation pit support reinforcement device and a construction method thereof, wherein the foundation pit support reinforcement device comprises a support plate installed on the side wall of the foundation pit body, two support plates are installed on opposite sides with a horizontally arranged support rod, two fixed sleeves are sleeved and installed on the support rod, and a first connecting plate is provided on the upper side of the fixed sleeve. When the present invention is used, the first connecting plate, the second connecting plate, and the auxiliary support mechanism support and reinforce the inner wall of the foundation pit body, when the side wall of the foundation pit body is deformed, the side wall of the foundation pit body pushes and squeezes the first connecting plate and the second connecting plate, when the fixed sleeve moves horizontally on the support rod, the push rod pushes the movable plug, and the movable plug squeezes the liquid in the liquid storage chamber, and the liquid is squeezed into the positioning mechanism, so that the positioning mechanism effectively positions the first protrusion and the fixed sleeve, slows down the degree of horizontal movement of the fixed sleeve, and improves the support effect on the side wall of the foundation pit body.

Description

Technical Field

[0001] The present invention relates to the technical field of foundation pit support, and in particular to a foundation pit support reinforcement device and a construction method thereof. Background Art

[0002] As the scale of urban construction in my country continues to expand, foundation pit excavation and support projects are increasing in number. This is particularly true for subway projects, which place increasing demands on foundation pit support and presenting a corresponding number of challenges. Foundation pit support plays a crucial role in construction, retaining soil, stabilizing the pit bottom, and intercepting water flow, ensuring the safety of the surrounding environment and the construction itself. To ensure the safety of both structural engineering and the surrounding environment, foundation pit support must be used to control the soil surface. Its primary function is to stabilize and ensure the stability of the pit bottom.

[0003] To prevent deformation or collapse of the foundation pit, strengthening the foundation pit support is a future trend. Traditional subway foundation pit support often uses support plates installed on the inner wall of the foundation pit and supported by support rods, which has the disadvantage of insufficient support strength. Summary of the Invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a foundation pit support and reinforcement device and a construction method thereof.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] The cam is secured to the side of the base with a secure, secure connection to the base during liftup, and the cam is secured to the side of the base with a secure connection to the base during liftup. The position of the starting point corresponds to the opening position of the perforation; a push rod is installed on the lower inner wall of the fixed sleeve, and the push rod is horizontally arranged at one end extending to the inside of the cavity through the perforation; a movable plug is installed on the inner wall of one end of the cavity through a reset spring, and a liquid storage chamber is provided on the side of the movable plug away from the push rod, and the interior of the liquid storage chamber is filled with liquid; the position of one end of the push rod away from the fixed sleeve corresponds to the side position of the movable plug; a positioning mechanism is provided inside the cavity for positioning the fixed sleeve when the side wall of the foundation pit body is deformed and causes the fixed sleeve to move on the support rod.

[0007] Preferably, the positioning mechanism includes a piston rod installed on the inner wall of the top of the cavity, a fixed shell is movably provided inside the piston rod, a horizontally arranged movable plate is installed at one end of the fixed shell extending to the outside of the piston rod, and a second protrusion is provided at intervals on the side of the movable plate away from the piston rod, and the position of the second protrusion corresponds to the position of the first protrusion.

[0008] Preferably, a first fixing plate is mounted on one end of the first connecting plate away from the fixing sleeve via a first supporting ear, and a side surface of the first fixing plate is connected to a side wall of the foundation pit body.

[0009] Preferably, the auxiliary support mechanism includes an upper sleeve rod and a lower sleeve rod, and the ends of the upper sleeve rod and the lower sleeve rod that are close to each other are sleeved with the same connecting rod, and the surface of the connecting rod is provided with a bolt hole, and one side of the upper sleeve rod and the lower sleeve rod are respectively provided with an upper fixing bolt and a lower fixing bolt that are adapted to the bolt hole.

[0010] Preferably, a connecting bolt is provided on the side of the connecting lug, and the size of the connecting bolt is the same as that of the upper fixing bolt and the lower fixing bolt.

[0011] Preferably, the end of the upper sleeve rod away from the connecting ear is installed with a second fixing plate through the third ear, and the side of the second fixing plate away from the third ear is connected to the side wall of the foundation pit body.

[0012] Preferably, the end of the lower sleeve rod away from the connecting support ear is installed with a third fixing plate through the fourth support ear; a mounting hole is opened on the third fixing plate, and a conical ground rod is provided inside the mounting hole for connecting with the bottom of the foundation pit body.

[0013] The construction method of the above foundation pit support and reinforcement device comprises the following steps:

[0014] The support plate is installed on the side wall of the foundation pit main body, the support rod is installed between the two support plates, the fixing sleeve is installed on the support rod, one end of the first connecting plate is installed on the outer wall of the fixing sleeve, and the end of the first connecting plate away from the fixing sleeve is connected to the side wall of the foundation pit main body through the first fixing plate and the first support ear; one end of the second connecting plate is installed on the outer wall of the fixing sleeve through the second support ear, and the end of the second connecting plate away from the fixing sleeve is connected to the connecting rod through the connecting support ear, one end of the connecting rod is connected to the upper sleeve rod through the lower fixing bolt, and the end of the upper sleeve rod away from the connecting rod is connected to the side wall of the foundation pit main body through the second fixing plate and the third support ear; the end of the connecting rod away from the upper sleeve rod is connected to the lower sleeve rod through the upper fixing bolt, and the end of the lower sleeve rod away from the connecting rod is connected to the third fixing plate through the fourth support ear, and the third fixing plate is connected to the bottom of the foundation pit main body through the conical ground rod.

[0015] The beneficial effects of the present invention are:

[0016] When in use, the support plate is installed on the side wall of the foundation pit main body, the support rod is installed between the two support plates, and the fixed sleeve is installed on the support rod. During use, the first connecting plate and the second connecting plate and the auxiliary support mechanism support and reinforce the inner wall of the foundation pit main body. When the side wall of the foundation pit main body is deformed, the side wall of the foundation pit main body pushes and squeezes the first connecting plate and the second connecting plate, so that the fixed sleeve is subjected to horizontal thrust. When the fixed sleeve moves horizontally on the support rod, the push rod pushes the movable plug, and the movable plug squeezes the liquid in the liquid storage chamber. The liquid is squeezed into the positioning mechanism, so that the positioning mechanism effectively positions the first protrusion and the fixed sleeve, slows down the degree of horizontal movement of the fixed sleeve, and improves the support effect on the side wall of the foundation pit main body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic side view of the structure of a foundation pit support and reinforcement device proposed in an embodiment of the present invention;

[0018] Figure 2 A schematic diagram of the three-dimensional structure of a foundation pit support and reinforcement device proposed in an embodiment of the present invention;

[0019] Figure 3 This is a schematic structural diagram of an upper sleeve rod, a lower sleeve rod, and a third fixing plate of a foundation pit support and reinforcement device proposed in an embodiment of the present invention;

[0020] Figure 4 A cross-sectional view of the cavity structure of a foundation pit support and reinforcement device proposed in an embodiment of the present invention;

[0021] Figure 5 This is a schematic structural diagram of a positioning mechanism of a foundation pit support and reinforcement device proposed in an embodiment of the present invention.

[0022] In the figure: 1-foundation pit body, 2-support plate, 3-first fixed plate, 4-first ear, 5-first connecting plate, 6-fixed sleeve, 7-support rod, 8-second ear, 9-second connecting plate, 10-connecting ear, 11-connecting rod, 12-upper sleeve rod, 13-lower sleeve rod, 14-second fixed plate, 15-third ear, 16-conical ground rod, 17-third fixed plate, 18-fourth ear, 19-bolt hole, 20-connecting bolt, 21-upper fixing bolt, 22-lower fixing bolt, 23-push rod, 24-movable plug, 25-reset spring, 26-liquid storage chamber, 27-first protrusion, 28-cavity, 29-perforation, 30-positioning mechanism, 301-movable plate, 302-second protrusion, 303-piston rod, 304-fixed shell. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0024] Reference Figures 1 to 5 , a foundation pit support and reinforcement device, including a support plate 2 installed on the side wall of the foundation pit body 1, a horizontally arranged support rod 7 is installed on the opposite side of the two support plates 2, two fixing sleeves 6 are sleeved on the support rod 7, and a first connecting plate 5 is provided on the upper side of the fixing sleeve 6; the lower side of the fixing sleeve 6 is connected to a second connecting plate 9 through a second support ear 8, and the end of the second connecting plate 9 away from the fixing sleeve 6 is installed with an auxiliary supporting mechanism through a connecting support ear 10; two cavities 28 are provided inside the support rod 7, and a through hole 29 is provided at the bottom of the cavity 28; the inner wall of the lower side of the fixing sleeve 6 is provided with first protrusions 27 distributed at intervals, and the position of the first protrusion 27 and The opening position of the through-hole 29 corresponds to that of the through-hole 29; a push rod 23 is installed on the lower inner wall of the fixed sleeve 6, and the push rod 23 extends through the through-hole 29 to one end of the inside of the cavity 28 and is arranged horizontally; a movable plug 24 is installed on the inner wall of one end of the cavity 28 through a reset spring 25, and a liquid storage chamber 26 is provided on the side of the movable plug 24 away from the push rod 23, and the interior of the liquid storage chamber 26 is filled with liquid; the position of one end of the push rod 23 away from the fixed sleeve 6 corresponds to the side position of the movable plug 24; a positioning mechanism 30 is provided inside the cavity 28, which is used to position the fixed sleeve 6 when the side wall of the foundation pit main body 1 is deformed and causes the fixed sleeve 6 to move on the support rod 7.

[0025] When in use, the support plate 2 is installed on the side wall of the foundation pit main body 1, the support rod 7 is installed between the two support plates 2, and the fixing sleeve 6 is installed on the support rod 7. During use, the first connecting plate 5, the second connecting plate 9, and the auxiliary supporting mechanism support and reinforce the inner wall of the foundation pit main body 1 to ensure that the upper and lower sides of the support plate 2 are evenly stressed, the connection is firm, and the stability is good. When the side wall of the foundation pit main body 1 is deformed, the side wall of the foundation pit main body 1 pushes and squeezes the first connecting plate 5 and the second connecting plate 9, so that the fixing sleeve 6 is subjected to horizontal thrust. When the fixing sleeve 6 moves horizontally on the support rod 7, the pushing rod 23 pushes the movable plug 24, and the movable plug 24 squeezes the liquid in the liquid storage chamber 26. The liquid is squeezed into the positioning mechanism 30, so that the positioning mechanism 30 effectively positions the first protrusion 27 and the fixing sleeve 6, slowing down the degree of horizontal movement of the fixing sleeve 6, and improving the support effect on the side wall of the foundation pit main body 1.

[0026] As a preferred embodiment of the present invention, the movable plug 24 is made of rubber, silicone or other materials. In this embodiment, the movable plug 24 is preferably made of rubber.

[0027] When the cam 310 is in the closed position, the cam 310 will be in the closed position, so the cam 310 can be turned off when the cam 310 is in the open position, thereby preventing the cam 310 from sliding off and thus preventing the cam 310 from sliding off.

[0028] As a preferred embodiment of the present invention, the second protrusion 302 is made of rubber, silicone or other materials. In this embodiment, the second protrusion 302 is preferably made of rubber.

[0029] As a preferred embodiment of the present invention, a first fixing plate 3 is installed on one end of the first connecting plate 5 away from the fixing sleeve 6 through a first support ear 4 , and a side surface of the first fixing plate 3 is connected to a side wall of the foundation pit body 1 .

[0030] As a preferred embodiment of the present invention, the auxiliary support mechanism includes an upper sleeve rod 12 and a lower sleeve rod 13, and the ends of the upper sleeve rod 12 and the lower sleeve rod 13 that are close to each other are sleeved with the same connecting rod 11, and the surface of the connecting rod 11 is provided with a bolt hole 19, and one side of the upper sleeve rod 12 and the lower sleeve rod 13 are respectively provided with an upper fixing bolt 21 and a lower fixing bolt 22 that are adapted to the bolt hole 19. Through the setting of the connecting rod 11 in the auxiliary support mechanism, the length of the supporting part and the supporting angle can be flexibly adjusted according to the specific situation of the on-site foundation pit support 1, which is convenient and quick to use, and improves the practicality of the reinforcement device; by adjusting the positions of the upper fixing bolt 21 and the lower fixing bolt 22, the function of adjusting according to the height of the foundation pit main body 1 can be brought into play.

[0031] As a preferred embodiment of the present invention, a connecting bolt 20 is provided on the side of the connecting lug 10 , and the size of the connecting bolt 20 is the same as that of the upper fixing bolt 21 and the lower fixing bolt 22 .

[0032] As a preferred embodiment of the present invention, the end of the upper sleeve rod 12 away from the connecting ear 10 is installed with a second fixing plate 14 through the third ear 15, and the side of the second fixing plate 14 away from the third ear 15 is connected to the side wall of the foundation pit body 1.

[0033] As a preferred embodiment of the present invention, a third fixing plate 17 is installed at one end of the lower sleeve rod 13 away from the connecting support ear 10 through a fourth support ear 18; a mounting hole is provided on the third fixing plate 17, and a conical ground rod 16 is provided inside the mounting hole for connecting to the bottom of the foundation pit main body 1. During use, the support plate 2, the first connecting plate 5, the upper sleeve rod 12, the second connecting plate 9 and the lower sleeve rod 13 support and protect the side walls and bottom inner walls of the foundation pit main body 1.

[0034] As a preferred embodiment of the present invention, the construction method of the above-mentioned foundation pit support and reinforcement device includes the following steps: installing the support plate 2 on the side wall of the foundation pit body 1, installing the support rod 7 between the two support plates 2, sleeve-mounting the fixing sleeve 6 on the support rod 7, installing one end of the first connecting plate 5 on the outer wall of the fixing sleeve 6, connecting the end of the first connecting plate 5 away from the fixing sleeve 6 to the side wall of the foundation pit body 1 through the first fixing plate 3 and the first support ear 4; installing one end of the second connecting plate 9 on the outer wall of the fixing sleeve 6 through the second support ear 8, and connecting the second connecting plate 9 to the side wall of the foundation pit body 1. The end away from the fixed sleeve 6 is connected to the connecting rod 11 through the connecting lug 10, one end of the connecting rod 11 is connected to the upper sleeve rod 12 through the lower fixing bolt 22, and the end of the upper sleeve rod 12 away from the connecting rod 11 is connected to the side wall of the foundation pit main body 1 through the second fixing plate 14 and the third lug 15; the end of the connecting rod 11 away from the upper sleeve rod 12 is connected to the lower sleeve rod 13 through the upper fixing bolt 21, and the end of the lower sleeve rod 13 away from the connecting rod 11 is connected to the third fixing plate 17 through the fourth lug 18, and the third fixing plate 17 is connected to the bottom of the foundation pit main body 1 through the conical ground rod 16.

[0035] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A foundation pit support and reinforcement device, comprising a support plate installed on the side wall of the foundation pit body, characterized in that: A horizontal support rod is installed on one side of the two supporting plates, and two fixing sleeves are sleeved on the support rod. A first connecting plate is provided on the upper side of the fixing sleeve; The lower side of the fixed sleeve is connected to a second connecting plate via a second supporting lug, and an auxiliary supporting mechanism is installed on an end of the second connecting plate away from the fixed sleeve via the connecting supporting lug; The support rod has two cavities formed inside, and the bottom of the cavities has a perforation; The lower inner wall of the fixed sleeve is provided with first protrusions distributed at intervals, and the positions of the first protrusions correspond to the opening positions of the perforations; A push rod is installed on the lower inner wall of the fixed sleeve, and one end of the push rod extends through the through hole to the inside of the cavity and is horizontally arranged; A movable plug is installed on the inner wall of one end of the cavity via a return spring, and a liquid storage cavity is provided on the side of the movable plug away from the push rod, and the interior of the liquid storage cavity is filled with liquid; The position of one end of the push rod away from the fixed sleeve corresponds to the side position of the movable plug; A positioning mechanism is provided inside the cavity for positioning the fixed sleeve when the side wall of the foundation pit main body is deformed and causes the fixed sleeve to move on the support rod. The positioning mechanism includes a piston rod installed on the inner wall of the top of the cavity, and a fixed shell is movably provided inside the piston rod. A horizontally arranged movable plate is installed at one end of the fixed shell extending to the outside of the piston rod, and a second protrusion is provided at intervals on the side of the movable plate away from the piston rod. The position of the second protrusion corresponds to the position of the first protrusion. When the movable plug is pushed by the push rod, the liquid in the liquid storage chamber is squeezed into the piston rod. A first fixed plate is installed at one end of the first connecting plate away from the fixed sleeve through a first support ear, and a side surface of the first fixed plate is connected to the side wall of the foundation pit main body.

2. A foundation pit support and reinforcement device according to claim 1, characterized in that: The auxiliary support mechanism includes an upper sleeve rod and a lower sleeve rod, and the ends of the upper sleeve rod and the lower sleeve rod that are close to each other are sleeved with the same connecting rod, and the surface of the connecting rod is provided with a bolt hole, and one side of the upper sleeve rod and the lower sleeve rod are respectively provided with an upper fixing bolt and a lower fixing bolt that are adapted to the bolt hole.

3. The foundation pit support and reinforcement device according to claim 2, characterized in that: A connecting bolt is provided on the side of the connecting lug, and the size of the connecting bolt is the same as that of the upper fixing bolt and the lower fixing bolt.

4. The foundation pit support and reinforcement device according to claim 3, characterized in that: The end of the upper sleeve rod away from the connecting ear is installed with a second fixing plate through the third ear, and the side of the second fixing plate away from the third ear is connected to the side wall of the foundation pit body.

5. The foundation pit support and reinforcement device according to claim 4, characterized in that: The end of the lower sleeve rod away from the connecting lug is provided with a third fixing plate via a fourth lug; The third fixing plate is provided with a mounting hole, and a conical ground rod is provided inside the mounting hole for connecting with the bottom of the foundation pit body.

6. The construction method of a foundation pit support and reinforcement device according to claim 5, characterized in that: The following steps are involved: Install the support plate on the side wall of the foundation pit body, install the support rod between the two support plates, sleeve the fixing sleeve on the support rod, install one end of the first connecting plate on the outer wall of the fixing sleeve, and connect the end of the first connecting plate away from the fixing sleeve to the side wall of the foundation pit body through the first fixing plate and the first support ear; One end of the second connecting plate is mounted on the outer wall of the fixed sleeve through the second supporting ear, and the end of the second connecting plate away from the fixed sleeve is connected to the connecting rod through the connecting supporting ear, one end of the connecting rod is connected to the upper sleeve rod through the lower fixing bolt, and the end of the upper sleeve rod away from the connecting rod is connected to the side wall of the foundation pit body through the second fixing plate and the third supporting ear; The end of the connecting rod away from the upper sleeve rod is connected to the lower sleeve rod through the upper fixing bolt, and the end of the lower sleeve rod away from the connecting rod is connected to the third fixing plate through the fourth support ear. The third fixing plate is connected to the bottom of the foundation pit body through a conical ground rod.

Images