Steel inner support anti-falling assembly for building foundation pit supporting

Abstract

The utility model discloses a steel inner support anti-falling assembly for building foundation pit supporting, which comprises a first anti-falling piece, a second anti-falling piece and a third anti-falling piece, the upper end of the first anti-falling piece is detachably mounted at one end of a steel inner support through a first mounting locking piece, and the lower end of the first anti-falling piece is pre-buried underground; the upper end of the second anti-falling piece is detachably installed at the other end of the steel inner support through a second installation locking piece, and the lower portion of the second anti-falling piece is pre-buried underground. The anti-falling device is simple in structure and novel and reasonable in design, can play an anti-falling role in the steel inner support, ensures the construction safety of operators in a foundation pit, and solves the potential safety hazard that in the using process of the steel inner support, underground water at the wall back hollows out a soil body, so that the foundation pit support deforms, the space between the foundation pits is increased, and the steel inner support is unstable and falls off. The situation that casualties of constructors are caused by falling after the foundation pit supporting steel inner support is unstable due to various reasons is avoided, and the safety of the constructors is guaranteed to the maximum extent.

Description

Technical Field

[0001] The utility model relates to a steel inner support anti-falling component for foundation pit support in highway and municipal projects, specifically a steel inner support anti-falling component for building foundation pit support, mainly used to solve the safety hazards that during the use of steel supports, the groundwater behind the wall erodes the soil body, causing deformation of the foundation pit support and an increase in the foundation pit spacing, resulting in the instability and falling off of the steel support; it belongs to the technical field of building construction safety protection. Background Art

[0002] Generally speaking, after the traditional steel structure inner support of the foundation pit is installed, usually the movable end and the fixed end of the steel support mainly use embedded hanging plates to prevent the steel inner support from falling. Three fixed hooks are arranged at the upper and lower ends of the front side of the hanging plate, and a supporting plate is arranged at the lower end. The steel plate and the hook are welded with E43 electrodes.

[0003] Although this traditional reinforcement method can generally ensure the stability of the steel inner support, there are still some technical defects and deficiencies as follows:

[0004] (1) Quality problems in the fabrication, installation welding and assembly of the steel support;

[0005] (2) Insufficient pre-axial force of the steel support or axial force loss;

[0006] (3) Impact and collision on the steel support during construction in the foundation pit, which may cause the support to fall off;

[0007] (4) Incorrect sequence during the disassembly and assembly of the steel inner support or too fast release of the pre-axial force of the steel support;

[0008] (5) Excessive or abnormal deformation of the foundation pit and other non-standard installation or construction reasons, which may lose the restraint on the steel inner support, causing the steel inner support to fall and resulting in casualties of construction workers in the foundation pit. In short, it is often very inconvenient.

[0009] Therefore, developing a steel inner support anti-falling component for building foundation pit support with strong practicability and high working reliability is the key to solving the above technical problems. Summary of the Invention

[0010] In view of the many defects and deficiencies in the above background art, the utility model has made improvements and innovations. The purpose is to provide a steel inner support anti-falling component with a simple structure, novel and reasonable design, which can be reused multiple times, can play the role of preventing the steel inner support from falling, ensure the construction safety of the internal operators in the foundation pit, and solve the safety hazards that during the use of the steel inner support, the groundwater behind the wall erodes the soil body, causing deformation of the foundation pit support and an increase in the foundation pit spacing, resulting in the instability and falling off of the steel inner support.

[0011] To solve the above problems and achieve the above-mentioned invention object, a steel inner support anti-falling component for building foundation pit support of the present utility model is realized by adopting the following design structure and the following technical solutions:

[0012] As an improvement of a steel inner support anti-falling component for building foundation pit support of the present utility model, it includes:

[0013] The first anti-falling member (1), the upper end of the first anti-falling member (1) is detachably installed at one end of the steel inner support (3) through the first installation locking member (2), and the lower end of the first anti-falling member (1) is embedded in the ground;

[0014] The second anti-falling member (4), the upper end of the second anti-falling member (4) is detachably installed at the other end of the steel inner support (3) through the second installation locking member (5), and the lower part of the second anti-falling member (4) is embedded in the ground.

[0015] As an improvement of the above of the present utility model, the first anti-falling member (1) includes:

[0016] The first connecting plate (11),

[0017] The first limiting plate (12), the first limiting plate (12) is symmetrically connected to both sides of the first connecting plate (11). Among them, a first installation hole (121) penetrating through the front and back sides of the side wall is opened on one side of the upper end of any one of the first limiting plates (12) or the first connecting plate (11), and the first installation locking member (2) passes through the first installation hole (121) to connect the first anti-falling member (1) and the steel inner support (3) into a whole.

[0018] As a further improvement of the above of the present utility model, the first limiting plate (12) is perpendicular to the first connecting plate (11).

[0019] As a further improvement of the above of the present utility model, the first anti-falling member (1) is a long I-beam or a long H-beam.

[0020] As a further improvement of the above of the present utility model, the second anti-falling member (4) includes:

[0021] The second connecting plate (41),

[0022] The second limiting plate (42), the second limiting plate (42) is symmetrically connected to both sides of the second connecting plate (41). Among them, a second installation hole (421) penetrating through the front and back sides of the side wall is opened on one side of the upper end of any one of the second limiting plates (42) or the second connecting plate (41), and the second installation locking member (5) passes through the second installation hole (421) to connect the second anti-falling member (4) and the steel inner support (3) into a whole, so as to realize the support and anti-falling of the steel inner support (3).

[0023] As a further improvement of the above-mentioned utility model, the second limiting plate (42) is arranged perpendicular to the second connecting plate (41).

[0024] As a further further improvement of the above-mentioned utility model, the second anti-falling member (4) is a long I-beam or a long H-beam.

[0025] As a further further further improvement of the above-mentioned utility model, the first anti-falling member (1) has the same shape and structure as the second anti-falling member (4), and they are arranged symmetrically or asymmetrically with respect to each other.

[0026] As a further further more improvement of the above-mentioned utility model, the first installation locking member (2) and the second installation locking member (5) are both limiting ropes, which are mainly composed of a steel wire rope and a steel wire rope clip connected to the steel wire rope, and are used to respectively realize the limiting and fixing of the first anti-falling member (1) and the second anti-falling member (4) on the steel internal support (3).

[0027] As a further more improvement of the above-mentioned utility model, an injection molding layer, an anti-rust layer, a waterproof layer and a warning layer are sequentially arranged from the inside to the outside on the outer surfaces of the first anti-falling member (1), the second anti-falling member (4) and the steel internal support (3), and fluorescent powder is coated on the warning layer.

[0028] The working principle is as follows: Before using a steel internal support anti-falling component with the above design structure, according to the actual construction needs, a reasonable number of multiple steel internal support anti-falling components are selected and transported to the designated working position for installation as a standby through manual or corresponding handling equipment.

[0029] During installation, after the foundation pit is excavated and cured to reach the design strength, the operator pre-installs the prepared steel internal support (3). When the operator installs the prepared steel internal support (3) on the foundation pit according to the requirements, the first steel internal support (3) is installed after the earthwork is excavated to about 20 cm below the bottom of the support. The second steel internal support and the steel waling are constructed after the earthwork is excavated to about 70 cm below the bottom of the second steel internal support (3).

[0030] After the steel support is erected, install the anti-falling component of the present invention on the steel internal support (3). During installation, according to the construction needs and standard requirements, install the first anti-falling component (1) and the second anti-falling component (4) of the present invention at both ends of the steel internal support (3) that needs safety protection respectively. During installation, the operator hoists the first anti-falling component (1) to the retaining wall of the foundation pit by using the corresponding hoisting equipment, and then vertically buries the first anti-falling component (1) downward into the ground (6) on one side of the pre-set foundation pit, and ensure that the buried depth is sufficient to ensure the stability of the first anti-falling component (1). Usually during construction, the buried depth is fourteen meters. After the first anti-falling component (1) is buried and installed, the steel wire rope of the first installation locking component (2) surrounds one end of the steel internal support (3) and then passes through the first installation hole (121) to be fastened with the first anti-falling component (1) as a whole. At the same time, wire rope clips are arranged on each steel wire rope at an interval of 10 cm to fix the steel wire rope.

[0031] Meanwhile, hoist the second anti-falling component (4). The operator hoists the second anti-falling component (4) to the retaining wall of the foundation pit by using the corresponding hoisting equipment, and then vertically buries the second anti-falling component (4) downward into the ground (6) on the other side of the pre-set foundation pit, and ensure that the buried depth is sufficient to ensure the stability of the second anti-falling component (4). Usually during construction, the buried depth is fourteen meters. After the second anti-falling component (4) is buried and installed, the steel wire rope of the second installation locking component (5) surrounds the other end of the steel internal support (3) and then passes through the second installation hole (421) to be fastened with the second anti-falling component (4) as a whole. At the same time, wire rope clips are arranged on each steel wire rope at an interval of 10 cm to fix the steel wire rope.

[0032] During the above entire implementation operation process, both the first installation locking component (2) and the second installation locking component (5) are steel wire ropes. According to the principle of "hanging high and using low", use a φ12mm steel wire rope to surround the steel internal support and then pass through the section steel hole. The steel wire rope surrounds and passes through at the end part of the steel support; and install wire rope clips according to the specification requirements. In this project, wire rope clips are arranged at an interval of 10 cm to fix the steel wire rope, and there are no less than three wire rope clips. The steel wire rope should not be taut and should be slightly loose to avoid the steel wire rope being in a stressed state for a long time, and at the same time, it can also reduce the impact force on the steel wire rope when the steel support accidentally falls.

[0033] At the same time, during the settlement and deformation detection work of the foundation pit during use, it is necessary to focus on checking the fastening and rusting conditions of the anti-falling steel wire rope. If rusting or loosening occurs, replace it in time.

[0034] After use, remove the wire rope clips and recycle the steel rope, and then remove the steel internal support (3). Finally, use the corresponding hoisting equipment again to pull out the first anti-falling component (1) and the second anti-falling component (4) from the ground (6). At the same time, after cleaning and repairing, carry them to the designated tool storage warehouse for storage for future recycling use.

[0035] According to the actual construction situation or actual construction needs, if the present utility model is not to be demolished, the operator only needs to cut off the exposed parts above the first anti-falling member (1) and the second anti-falling member (4) to make them flush with the ground, so that the first anti-falling member (1) and the second anti-falling member (4) are both embedded underground and integrated with the ground as a foundation structure, serving as a foundation to achieve the purpose and function of stabilizing the foundation.

[0036] The beneficial effects of the present utility model compared with the prior art are as follows:

[0037] 1. The structure of the present utility model is simple, novel and reasonable, and can be repeatedly used. It can play the role of preventing the steel internal support from falling, ensuring the construction safety of the operators inside the foundation pit. And by designing this anti-falling component, it can solve the potential safety hazards that occur during the use of the steel internal support, such as the groundwater behind the wall eroding the soil body, causing the deformation of the foundation pit support and the increase of the foundation pit spacing, resulting in the instability and falling off of the steel internal support.

[0038] 2. The present utility model adds an additional insurance protection measure to the steel internal support of the foundation pit, avoiding the situation that the steel internal support of the foundation pit falls and causes casualties to the construction workers due to instability for various reasons, and maximizing the personal safety of the construction workers.

[0039] 3. The present utility model uses a steel internal support anti-falling insurance component with simple processing and low cost in the foundation pit support, preventing the falling off of the steel internal support, ensuring the safety of the workers in the foundation pit, and improving the safety of the foundation pit support by ensuring the safety of the steel internal support.

[0040] 4. The exterior of the present utility model is coated with an anti-rust layer and a waterproof layer, so it can prevent rust and extend the service life of the entire component at the same time. It realizes environmental protection and saves resources at the same time. At the same time, a self-luminous fluorescent material is coated on the exterior of the component, which can clearly mark the position of the component at night, in a dark room or in an underground construction environment, effectively playing the role of safety reminder, improving the visibility, being easy for people to distinguish, and increasing the safety in construction and life. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The following further details the specific implementation manners of the present utility model in conjunction with the drawings, where:

[0042] Figure 1 is one of the schematic diagrams of the use state of the present utility model;

[0043] Figure 2 is the second schematic diagram of the use state of the present utility model;

[0044] Figure 3It is the third schematic diagram of the usage state of the present utility model;

[0045] Figure 4 It is the fourth schematic diagram of the usage state of the present utility model;

[0046] Figure 5 It is the fifth schematic diagram of the usage state of the present utility model;

[0047] Figure 6 It is the sixth schematic diagram of the usage state of the present utility model;

[0048] Figure 7 It is the overall structure schematic diagram of the present utility model;

[0049] Figure 8 It is the overall structure schematic diagram of the first anti-falling member (1) component of the present utility model;

[0050] Figure 9 It is the overall structure schematic diagram of the second anti-falling member (4) component of the present utility model;

[0051] Among them, the reference numerals in the figure: 1—the first anti-falling member, 11—the first connecting plate, 12—the first limiting plate, 121—the first mounting hole;

[0052] 2—the first mounting and locking member;

[0053] 3—the steel internal brace;

[0054] 4—the second anti-falling member, 41—the second connecting plate, 42—the second limiting plate, 421—the second mounting hole;

[0055] 5—the second mounting and locking member;

[0056] 6—the ground. Specific embodiments

[0057] In order to make the technical means, creative features, achieved purposes and effects realized by the present utility model easy to understand, the technical solutions of the present utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and embodiments.

[0058] As shown in the specification appendix Figure 1 To the specification appendix Figure 9 As shown, a steel internal brace anti-falling assembly for building foundation pit support includes:

[0059] The first anti-falling member 1, the upper end of the first anti-falling member 1 is detachably installed at one end of the steel internal brace 3 through the first mounting and locking member 2, and the lower end of the first anti-falling member 1 is buried underground;

[0060] The second anti-falling component 4, the upper end of the second anti-falling component 4 is detachably mounted on the other end of the steel inner support 3 through the second mounting locking component 5, and the lower part of the second anti-falling component 4 is pre-buried underground.

[0061] Further, such as Figure 8 As shown, the first anti-falling component 1 includes:

[0062] The first connecting plate 11,

[0063] The first limiting plate 12 is symmetrically connected to both sides of the first connecting plate 11, wherein a first mounting hole 121 penetrating the front and back sides of the side wall is opened on one side of the upper end of any one of the first limiting plate 12 or the first connecting plate 11, and the first mounting locking member 2 passes through the first mounting hole 121 to connect the first anti-falling member 1 and the steel inner support 3 as a whole.

[0064] In the present invention, the first mounting hole 121 is a through hole, which is used to pass the first mounting locking member 2 and serves as a hoisting hole, so that the present invention can be hoisted easily after use.

[0065] Specifically, the first limiting plate 12 is arranged perpendicular to the first connecting plate 11 .

[0066] Specifically, the first anti-falling component 1 is a long I-beam or a long H-beam.

[0067] Further, such as Figure 9 As shown, the second anti-falling component 4 includes:

[0068] The second connecting plate 41,

[0069] The second limiting plate 42 is symmetrically connected to both sides of the second connecting plate 41, wherein a second mounting hole 421 penetrating the front and back sides of the side wall is opened on one side of the upper end of any one of the second limiting plates 42 or the second connecting plate 41, and the second mounting locking member 5 passes through the second mounting hole 421 to connect the second anti-falling member 4 and the steel inner support 3 as a whole, so as to realize the support and anti-falling of the steel inner support 3.

[0070] In the present invention, the second mounting hole 421 is a through hole, which is used to pass the second mounting locking member 5 and serves as a hoisting hole, so as to facilitate hoisting of the present invention after use.

[0071] Further, such as Figure 9 As shown, the second limiting plate 42 is arranged perpendicular to the second connecting plate 41 .

[0072] Furthermore, the second anti-falling component 4 is a long I-beam or a long H-beam.

[0073] Further, the first anti-falling member 1 and the second anti-falling member 4 have the same shape and structure, and are arranged symmetrically or asymmetrically with respect to each other.

[0074] In the present utility model, the first anti-falling member 1 and the second anti-falling member 4 are arranged symmetrically with respect to each other; the first anti-falling member 1 and the second anti-falling member 4 are arranged in at least one, two, or multiple numbers together according to the needs of the actual construction process.

[0075] Further, the first installation and locking member 2 and the second installation and locking member 5 are both limiting ropes, which are mainly composed of a steel wire rope and a wire rope clip connected to the steel wire rope, and are used to respectively realize the limiting and fixing of the first anti-falling member 1 and the second anti-falling member 4 on the steel inner support 3.

[0076] In the present utility model, the first installation and locking member 2 and the second installation and locking member 5 are respectively steel wire ropes with a diameter of φ10mm. The steel wire ropes surround the steel inner support 3 and then pass through the first installation hole 121 and the second installation hole 421 to be fastened to the first anti-falling member 1 and the second anti-falling member 4 as a whole. At the same time, wire rope clips are arranged on each steel wire rope at an interval of 10 cm to fix the steel wire rope.

[0077] Further, an injection layer, an anti-rust layer, a waterproof layer, and a warning layer are sequentially arranged from the inside to the outside on the outer surfaces of the first anti-falling member 1, the second anti-falling member 4, and the steel inner support 3, and fluorescent powder is coated on the warning layer.

[0078] In the present utility model, a high molecular wear-resistant material is injection-molded on the injection layer; the anti-rust layer includes an epoxy zinc-rich primer, a chlorinated rubber topcoat, and an epoxy mica iron intermediate coat located between the epoxy zinc-rich primer and the chlorinated rubber topcoat; the waterproof layer is a polyurethane waterproof coating; the warning layer is a reflective warning tape, a reflective color film, or a reflective paint with a single color or a mixture of multiple colors.

[0079] At the same time, in the present utility model, the referred connections are all fixed connections, movable connections, or detachable connections. Among them, the fixed connection is a welded connection or is directly processed into an integral structure; the movable connection, detachable connection, or split structure is a hinged connection, an internal and external thread connection, a bayonet connection, a plug-in socket connection, a bolt assembly connection, or a screw connection.

[0080] In summary, a more specific implementation manner of the present utility model is:

[0081] Before using a steel inner support anti-falling assembly for building foundation pit support with the above design structure, according to the needs of actual construction, a reasonable number of multiple steel inner support anti-falling assemblies are selected and transported to the designated working position for installation as a standby through manual labor or corresponding handling equipment.

[0082] During installation, after the foundation pit is excavated and cured to reach the design strength, the operator pre-installs the prepared steel internal bracing 3. When the operator installs the prepared steel internal bracing 3 on the foundation pit according to the requirements, the first steel internal bracing 3 is installed after the earthwork is excavated to about 20 cm below the bottom of the bracing. After the earthwork is excavated to about 70 cm below the bottom of the second steel internal bracing 3, the second steel bracing collar and steel bracing are constructed.

[0083] After the steel bracing is erected, the anti-falling component of the present invention is installed on the steel internal bracing 3. During installation, according to the construction needs and standard requirements, the first anti-falling member 1 and the second anti-falling member 4 of the present invention are respectively installed at both ends of the steel internal bracing 3 that needs safety protection. During installation, the operator hoists the first anti-falling member 1 to the retaining wall of the foundation pit by using the corresponding hoisting equipment, and then vertically buries the first anti-falling member 1 downward into the ground 6 on one side of the pre-set foundation pit, and ensures that the buried depth is sufficient to ensure the stability of the first anti-falling member 1. Usually during construction, the buried depth is fourteen meters. After the first anti-falling member 1 is pre-buried and installed, the steel wire rope of the first installation locking member 2 is wound around one end of the steel internal bracing 3 and then passes through the first installation hole 121 to be fastened to the first anti-falling member 1 as a whole. At the same time, wire rope clips are arranged at intervals of 10 cm on each steel wire rope to fix the steel wire rope.

[0084] At the same time, hoist the second anti-falling member 4. The operator hoists the second anti-falling member 4 to the retaining wall of the foundation pit by using the corresponding hoisting equipment, and then vertically buries the second anti-falling member 4 downward into the ground 6 on the other side of the pre-set foundation pit, and ensures that the buried depth is sufficient to ensure the stability of the second anti-falling member 4. Usually during construction, the buried depth is fourteen meters. After the second anti-falling member 4 is pre-buried and installed, the steel wire rope of the second installation locking member 5 is wound around the other end of the steel internal bracing 3 and then passes through the second installation hole 421 to be fastened to the second anti-falling member 4 as a whole. At the same time, wire rope clips are arranged at intervals of 10 cm on each steel wire rope to fix the steel wire rope.

[0085] During the above entire implementation operation process, both the first installation locking member 2 and the second installation locking member 5 are steel wire ropes. According to the principle of "hanging high and using low", a φ12 mm steel wire rope is wound around the steel internal bracing and then passes through the section steel hole. The steel wire rope is wound around the end part of the steel bracing and then passes through; and wire rope clips are installed according to the specification requirements. In this project, wire rope clips are arranged at intervals of 10 cm to fix the steel wire rope, and there are no less than three wire rope clips. The steel wire rope should not be taut and should be slightly loose to avoid the steel wire rope being in a stressed state for a long time, and at the same time, it can also reduce the impact force of the accidental fall of the steel bracing on the steel wire rope.

[0086] At the same time, during the settlement and deformation detection work of the foundation pit during use, the fastening and rusting conditions of the anti-falling steel wire rope need to be inspected key points. If rusting or loosening occurs, replace it in time.

[0087] After use, release the wire clamp to recover the steel wire rope, and remove the inner steel support 3. Finally, use the corresponding hoisting equipment again to pull out the first anti-falling component 1 and the second anti-falling component 4 from the ground 6. Meanwhile, after cleaning and repairing, carry them to the designated tool storage warehouse for storage for the next cycle of turnover use.

[0088] Meanwhile, according to the actual construction situation or actual construction needs, if the operator does not demolish the present utility model, the operator only needs to cut off the exposed parts above the first anti-falling component 1 and the second anti-falling component 4 to make them flush with the ground, so that the first anti-falling component 1 and the second anti-falling component 4 are embedded in the ground and integrated with the ground as a foundation structure for use as a foundation, achieving the purpose and function of stabilizing the foundation.

[0089] Specific application engineering example 1

[0090] A total of 2 pedestrian underpasses are set in section A of the East Third Ring Road of this project. The 1# pedestrian underpass is located at the pile number DDK0+683.557, with an overall buried depth of about 6.65m. The perimeter of the foundation pit of the 1# underpass is about 315 meters, the area is about 895m2, and the excavation depth is 2.55 - 8.45m.

[0091] Foundation pit support situation: The foundation pit of the pedestrian underpass in this project is excavated by 2.55 - 8.45m, the safety level of the foundation pit support design is grade II, and the designed service life of the foundation pit is 1 year. The foundation pit retaining structure adopts φ850@600 three-axis mixing piles with N700X300X13X24 steel sections inserted every other one, and the depth of the retaining piles is 6.45 - 21.85m. The entrances and exits of the underpass adopt type IV Larssen steel sheet piles Q295 as the retaining structure, and the length of the Larssen steel sheet piles is 9.0m; the support structure is φ609X16 steel supports, and the maximum span of the supports is 6.0m; the concrete capping beam is 1200x800mm, and the waling uses double-pinned HN500X300X11X18 steel sections; the bottom of the pit is reinforced by φ850@600 three-axis mixing piles with strip reinforcements to a depth of 4.5m at the bottom of the pit, and the longitudinal spacing of the strips is 2m. The φ609 steel supports used for the foundation pit support use this technology as an insurance component to prevent the inner support from falling off during use.

[0092] Specific application engineering example 2

[0093] The present utility model is used for the foundation pit support construction of the 1# and 2# pedestrian underpasses of the project from Luoya Interchange to Guangchang Interchange in section A of the East Third Ring Road of the Three-Ring Closure Project in Kunming. In this project, a steel inner support anti-falling insurance component with simple processing and low cost is used in the foundation pit support. The prevention treatment of the steel inner support falling off is carried out to ensure the safety of the workers working in the foundation pit and improve the safety of the foundation pit support by ensuring the safety of the steel inner support.

[0094] Finally, it should be noted that the above description is only a preferred embodiment of the present invention, and it is not intended to limit the present invention in other forms. Any person skilled in the art may use the disclosed technical content to make changes or modifications into equivalent embodiments with equivalent changes. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the technical solution content of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. A steel inner support anti-falling assembly for building foundation pit support, characterized in that: include: A first anti-falling component (1), the upper end of which is detachably mounted on one end of the steel inner support (3) via a first mounting locking component (2), and the lower end of which is pre-buried underground; A second anti-falling component (4), the upper end of which is detachably mounted on the other end of the steel inner support (3) via a second mounting locking component (5), and the lower part of which is pre-buried underground.

2. A steel inner support anti-falling assembly for building foundation pit support according to claim 1, characterized in that: The first anti-falling component (1) comprises: A first connecting plate (11), A first limiting plate (12), the first limiting plate (12) is symmetrically connected to both sides of the first connecting plate (11), wherein a first mounting hole (121) penetrating the front and back sides of the side wall is opened on one side of the upper end of any one of the first limiting plates (12) or the first connecting plate (11), and a first mounting locking member (2) passes through the first mounting hole (121) to connect the first anti-falling member (1) and the steel inner support (3) into a whole.

3. The steel inner support anti-falling assembly for building foundation pit support according to claim 2 is characterized in that: The first limiting plate (12) is arranged perpendicular to the first connecting plate (11).

4. A steel inner support anti-falling assembly for building foundation pit support according to claim 1 or 2, characterized in that: The first anti-falling component (1) is a long I-beam or a long H-beam.

5. The steel inner support anti-falling assembly for building foundation pit support according to claim 1 is characterized in that: The second anti-falling component (4) comprises: The second connecting plate (41), A second limiting plate (42), the second limiting plate (42) is symmetrically connected to the two sides of the second connecting plate (41), wherein a second mounting hole (421) penetrating the front and back sides of the side wall is opened on one side of the upper end of any one of the second limiting plates (42) or the second connecting plate (41), and a second mounting locking member (5) passes through the second mounting hole (421) to connect the second anti-falling member (4) and the steel inner support (3) into a whole, so as to realize the support and anti-falling of the steel inner support (3).

6. The steel inner support anti-falling assembly for building foundation pit support according to claim 5 is characterized in that: The second limiting plate (42) is arranged perpendicular to the second connecting plate (41).

7. A steel inner support anti-falling assembly for building foundation pit support according to claim 1 or 5, characterized in that: The second anti-falling component (4) is a long I-beam or a long H-beam.

8. The steel inner support anti-falling assembly for building foundation pit support according to claim 1 is characterized in that: The first anti-falling component (1) and the second anti-falling component (4) have the same shape and structure and are arranged symmetrically or asymmetrically with each other.

9. The steel inner support anti-falling assembly for building foundation pit support according to claim 1, characterized in that: The first installation locking member (2) and the second installation locking member (5) are both limiting ropes, which are mainly composed of a steel wire rope and a steel wire rope clip connected to the steel wire rope, and are used to respectively realize the limiting fixation of the first anti-falling member (1) and the second anti-falling member (4) on the steel inner support (3).

10. The steel inner support anti-falling assembly for building foundation pit support according to claim 1, characterized in that: An injection molding layer, an anti-rust layer, a waterproof layer and a warning layer are sequentially arranged on the outer surfaces of the first anti-falling component (1), the second anti-falling component (4) and the steel inner support (3) from the inside to the outside, and the warning layer is coated with fluorescent powder.

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