CN209873809U - Foundation pit limb platform system - Google Patents

Foundation pit limb platform system Download PDF

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Publication number
CN209873809U
CN209873809U CN201920453919.4U CN201920453919U CN209873809U CN 209873809 U CN209873809 U CN 209873809U CN 201920453919 U CN201920453919 U CN 201920453919U CN 209873809 U CN209873809 U CN 209873809U
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China
Prior art keywords
foundation pit
platform
columns
crown beam
crown
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Application number
CN201920453919.4U
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Chinese (zh)
Inventor
陈凯
韩友明
黄勇
王天东
王英
符骏
孙雷
宋春桃
易庚
魏昌智
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China Construction Second Engineering Bureau Co Ltd
Third Construction Engineering Co Ltd of China Construction Second Engineering Bureau Co Ltd
Original Assignee
China Construction Second Engineering Bureau Co Ltd
Third Construction Engineering Co Ltd of China Construction Second Engineering Bureau Co Ltd
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Priority to CN201920453919.4U priority Critical patent/CN209873809U/en
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Abstract

The utility model discloses a foundation pit limb platform system, which comprises a crown beam connected to the bottom of the foundation pit, a set of columns connected to the top of the crown beam, a set of table beams connected between the columns and the ground of the top of the foundation pit limb, and a set of connecting plates connected between the table beams, wherein a panel is laid above the connecting plates, and railings are arranged on the panel; an inclined strut is connected between the crown beam and the platform beam; a pedal is arranged on the ground where the platform beam is connected with the near side of the foundation pit, and supporting piles and anchor rods are arranged on the side slope of the near side of the foundation pit at intervals. The components such as the platform beam, the inclined strut, the platform column, the connecting rod, the panel and the connecting rod are arranged, so that the components can be assembled firstly and then hoisted to the designed platform position, the field construction operation is reduced, and the structural connection stress is reasonable, safe and reliable; in order to maintain the stability of the side slope of the foundation pit, the slope, a support pile at the base, an anchor rod support at the slope and a crown beam column are jointly applied, so that the upper bearing and the stability of the side slope can be ensured to the greatest extent.

Description

Foundation pit limb platform system
Technical Field
The utility model relates to a foundation ditch engineering construction field, in particular to foundation ditch faces limit platform system.
Background
In order to utilize underground space or carry out building foundation treatment, foundation pit engineering is often carried out, a larger construction site is often utilized in the foundation pit engineering construction, and the foundation pit is excavated downwards and occupies a larger construction site, so that the construction site is insufficient, and how to utilize the structural form characteristics of the foundation pit to increase the site used for construction is one of the main points of the foundation pit engineering construction; it makes up into temporary platform to adopt to set up the steel-pipe frame at foundation ditch side slope earlier often, but set up the mode and all use the steel-pipe frame directly to take on slope, this makes the slope receive bigger power near the soil body on foundation ditch limit, cause soil body unstability easily, also have very big influence to the limit atress that faces of foundation ditch fender pile, the deformation of foundation ditch fender pile can increase, be very unfavorable for the construction operation and can form the potential safety hazard to constructor, consequently, need provide a safety, reliable and easy foundation ditch that the construction was implemented faces limit platform system.
SUMMERY OF THE UTILITY MODEL
The utility model provides a foundation ditch faces limit platform system for it is not enough to solve the ground in the foundation ditch engineering, and temporary platform is dangerous and difficult construction uses the technical problem.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a foundation pit near-edge platform system comprises a crown beam connected to the bottom of a foundation pit, a group of columns connected to the top of the crown beam, a group of table beams connected between the columns and the ground of the top of the near edge of the foundation pit, and a group of connecting plates connected between the table beams, wherein a panel is laid above the connecting plates, and railings are arranged on the panel; and an inclined strut is connected between the crown beam and the platform beam.
The top beam is arranged along the length direction of the side edge of the foundation pit, the top beam columns are connected between the top beam and the bottom surface of the foundation pit, at least two rows of the top beam columns are arranged at the two transverse ends of the top beam respectively, and the top beam columns are connected with the bottom surface of the foundation pit through fixing plate bolts or are connected with foundation pre-embedding.
The crown beam is formed by pouring concrete, and longitudinal ribs, stirrups and tie bars among the longitudinal ribs are arranged in the crown beam; the top beam and the foundation pit face the limit soil body interval and are provided with soil nails, face the limit lateral surface of one side at the top beam outside of one side and are provided with the fender pile side by side keeping away from the foundation pit.
The height of the table column is adapted to the vertical height of the adjacent edge of the foundation pit, at least one table column inclined strut is arranged between every two adjacent table columns, and the table columns are connected or welded with the crown beam through fixing plate bolts.
Be provided with the footboard on the subaerial of being connected near the limit in platform crossbeam and foundation ditch, the footboard is concrete placement and follows platform crossbeam tip through long setting, and the footboard top surface flushes with platform crossbeam top surface.
The pedal is characterized in that a pedal support is arranged on the lower portion of the pedal, the pedal support is a concrete block with a support bottom plate, a vertically downward reinforcing steel bar is connected to the lower portion of the support bottom plate, and the reinforcing steel bar is inserted into a concrete foundation poured in advance below the support bottom plate.
And (3) arranging support piles on the side slope of the foundation pit at intervals, and additionally arranging anchor rods between the support piles and the side slope.
At least one row of connecting rods are arranged between the inclined struts, the inclined struts are connected or welded with the crown beam through fixing plate bolts, and the inclined struts are connected or welded with the table beam through fixing plate bolts.
At least one lifting lug is arranged on the column, the cross beam or the inclined strut.
And the outer sides of the column, the cross beam and the diagonal brace are coated with antirust or anticorrosive layers and are provided with at least one grounding wire.
The table column, the table beam and the inclined strut are made of steel or alloy and are integrally prefabricated and assembled.
The beneficial effects of the utility model are embodied in:
1) the components such as the platform beam, the inclined strut, the platform column, the connecting rod, the panel and the connecting rod of the utility model can be prefabricated, and can be integrally assembled firstly and then hoisted to the position of the designed platform through the lifting lug, so that the site construction operation is reduced, and the structural connection stress is reasonable, safe and reliable;
2) the crown beam arranged in the utility model can bear most of the upper load, the stress is transmitted to the bottom of the foundation or the foundation pit through the crown beam column, the stability of the platform is ensured, the crown beam can be prefabricated or cast in situ, and the reinforcement can also be designed in advance by calculating the upper load;
3) in the utility model, for maintaining the stability of the side slope of the foundation pit, the slope and the support piles at the base are jointly applied, the anchor rod support at the slope is combined with the arrangement of the crown beam column, and the upper bearing and the stability of the side slope can be ensured to the maximum extent;
4) the utility model discloses be provided with the footboard, can conveniently be under construction fortune material, the height of footboard has the controllability, and material stock district and walking district are cut apart into with the panel to the platform crossbeam and the panel of adaptable co-altitude in addition setting up of railing simultaneously, have both guaranteed constructor safety, have improved the efficiency of construction again.
In conclusion, the utility model is based on the existing construction technology, and is innovative around temporary turnover and saving land, green and environment-friendly, and the setting material can be recycled; additional features and advantages will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the invention; the primary objects and other advantages of the invention may be realized and attained by the structure particularly pointed out in the written description.
Drawings
FIG. 1 is a side view of a foundation pit bordering platform system;
FIG. 2 is a schematic view of the table beam, links and rail connections;
FIG. 3 is a schematic view of a panel;
FIG. 4 is a side view of the table beam in connection with the ground;
FIG. 5 is a top view of the table beam in connection with the ground;
FIG. 6 is a schematic view of the connection between the columns;
FIG. 7 is a cross-sectional reinforcement view of a crown beam;
fig. 8 is a schematic view of a crown beam column bottom connection.
Reference numerals: 1-column, 2-beam, 3-diagonal brace, 4-crown beam, 41-stirrup, 42-lacing wire, 43-longitudinal bar, 44-soil nail, 5-crown beam column, 6-connecting plate, 7-panel, 8-pedal, 9-pedal support, 10-rail, 11-support pile, 12-anchor rod, 13-rectangular plate, 14-ground, 15-column diagonal brace and 16-connecting rod.
Detailed Description
As shown in fig. 1 and 2, a foundation pit edge platform system comprises a top beam 4 connected to the bottom of a foundation pit, a group of columns 1 connected to the top of the top beam 4, a group of table beams 2 connected between the columns 1 and the ground of the top of the foundation pit edge, and a group of connecting plates 6 connected between the table beams 2, wherein the connecting plates 6 are square purlins 50 × 100 × 5, and are connected with the table beams 2 by welding, panels 7 are laid above the connecting plates 6, as shown in fig. 3, the panels 7 are full-paved 4 mm-thick figured steel plates, and two standardized railings 10 are welded on the panels 7 to form a sidewalk;
in the embodiment, an inclined strut 3 is connected between a crown beam 4 and a platform beam 2, the platform beam 2, a platform column 1 and the inclined strut 3 are all made of 200 × 150 × 6 × 9 HM section steel, an anti-rust or anti-corrosion layer is coated on the outer side of the HM section steel, the HM section steel is used as a truss, the interval distance between main trusses is 2 meters, and a support at the end part of the platform column 1 is fixed by plug welding through a steel plate with the thickness of 10mm implanted into the crown beam 4 or a steel bar on the ground 14; a row of connecting rods 16 are welded in the whole length among the inclined struts 3, the connecting rods 16 are made of flat tubes of 50 multiplied by 100 multiplied by 5, lifting lugs are arranged on the table posts 1, the table cross beams 2 or the inclined struts 3, and grounding wires are arranged on the table posts 1, the table cross beams 2 or the inclined struts 3.
As shown in fig. 4 and 5, the table cross member 2 spans a gutter at one end of the floor 14 and is bolted to the floor 14 through a rectangular plate 13; as shown in fig. 6, two sets of column diagonal braces 15 in an X shape are connected between the columns 1, and the column diagonal braces 15 are made of 50 × 100 × 5 flat tubes.
In the embodiment, the floor 14, which is connected between the platform beam 2 and the adjacent edge of the foundation pit, is provided with the pedal 8, the pedal 8 is cast by concrete, the end part of the platform beam 2 is arranged in a through length manner, and the top surface of the pedal 8 is flush with the top surface of the platform beam 2; a pedal support 9 is arranged at the lower part of the pedal 8, the pedal support 9 is a concrete block with a support bottom plate, the lower part of the support bottom plate is connected with a vertically downward reinforcing steel bar, and the reinforcing steel bar is inserted into a concrete foundation which is poured in advance below the supporting steel bar; and (3) arranging support piles 11 on the side slope of the foundation pit at intervals, and additionally arranging anchor rods 12 between the support piles 11 and the side slope.
As shown in fig. 7 and 8, the crown beams 4 are arranged along the length direction of the side edge of the foundation pit, the crown beams 4 are connected with the bottom surface of the foundation pit by the crown beam columns 5, the crown beam columns 5 are at least two rows and are respectively arranged at the bottoms of the two transverse ends of the crown beams, wherein the crown beam columns 5 are connected with the bottom surface of the foundation pit by fixing plate bolts or are connected with the foundation embedded layer; the crown beam 4 is formed by pouring concrete, and annular longitudinal ribs 43, two rows of stirrups 41 and tie bars 42 between the longitudinal ribs 43 are arranged in the concrete; soil nails 44 are arranged between the crown beam 4 and the foundation pit near-edge soil body at intervals, and supporting piles 11 are arranged outside the crown beam columns 5 on the outer sides side by side; the crown beam column 5 is made of H-shaped steel or I-shaped steel, and the fixing plate is made of rectangular steel plates and is connected with the bottom surface of the foundation pit through bolts or an embedded mode.
The construction method of the foundation pit near-edge platform system is further described with reference to fig. 1 to 8, and the concrete steps are as follows:
step one, blanking of the platform beam 2, the platform column 1 and the inclined strut 3 is carried out according to the actual size of the foundation pit measured on site, the platform beam 2, the platform column 1 and the inclined strut 3 are welded into a truss, and the number of trusses is designed according to the length of the crown beam 4
And secondly, erecting a crown beam column 5 on the bottom surface of the foundation pit, embedding a rectangular steel plate and soil nails 44 of the soil body on the edge of the foundation pit at the bottom of the foundation pit when the crown beam 4 is poured, hoisting the crown beam 4 after maintenance is finished, and paying attention to selection of a hoisting point and whether the position of a drop point meets requirements during hoisting.
Thirdly, driving a support pile 11 at the outer side of the crown beam column 5, driving a support pile 11 and an anchor rod 12 on a side slope near the foundation pit, anchoring a soil nail 44 on the crown beam 4 and a soil body near the side of the foundation pit, then sequentially lifting a group of trusses consisting of a platform beam 2, a platform column 1 and an inclined strut 3, connecting the inclined strut 3 with the top of the crown beam 4, and anchoring the platform beam 2 with the ground 14;
step four, welding the table post inclined supports 15 among the table posts 1, welding the connecting plates 6 among the table cross beams 2 and the connecting rods 16 among the inclined supports 3, arranging the pedals 8 and the pedal supports 9 below the pedals 8 at the joints of the foundation pit edge ground 14 and the table cross beams 2, wherein the extending positions of the connecting plates 6 must be controlled at the table cross beams 2 and cannot be placed at overhead positions, then laying the panel 7 on the connecting plates 6, and finally arranging the railings 10 on the panel 7, thereby completing the installation of the platform system.
The above description is only for the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be considered by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention.

Claims (10)

1. A foundation pit edge-facing platform system is characterized by comprising a crown beam (4) connected to the bottom of a foundation pit, a group of columns (1) connected to the top of the crown beam (4), a group of table beams (2) connected between the columns (1) and the ground of the top of an edge of the foundation pit, and a group of connecting plates (6) connected between the table beams (2), wherein a panel (7) is laid above the connecting plates (6), and railings (10) are arranged on the panel (7); and an inclined strut (3) is connected between the crown beam (4) and the platform beam (2).
2. The foundation pit limb platform system according to claim 1, wherein the crown beams (4) are arranged along the length direction of the side edges of the foundation pit, crown beam columns (5) are connected between the crown beams (4) and the bottom surface of the foundation pit, at least two rows of the crown beam columns (5) are arranged at the two transverse ends of the crown beams (4), respectively, and the crown beam columns (5) are connected with the bottom surface of the foundation pit through fixing plate bolts or are connected with a foundation embedded layer.
3. A foundation pit limb platform system according to claim 2, characterized in that the crown beam (4) is cast by concrete, and longitudinal bars (43), stirrups (41) and tie bars (42) between the longitudinal bars (43) are arranged in the crown beam (4); soil nails (44) are arranged at intervals between the crown beam (4) and the foundation pit near-edge soil body, and supporting piles (11) are arranged on the outer side face of the crown beam column (5) far away from one side of the foundation pit near-edge side in parallel.
4. The foundation pit limb platform system according to claim 1, wherein the height of the columns (1) is adapted to the vertical height of the foundation pit limb, at least one column diagonal brace (15) is arranged between adjacent columns (1), and the columns (1) and the crown beam (4) are connected or welded through fixing plate bolts.
5. A foundation pit bordering platform system as defined in claim 1, characterized in that, there are footplates (8) on the floor (14) where the platform beam (2) is connected with the foundation pit bordering edge, the footplates (8) are concrete casting and are arranged along the end of the platform beam (2), and the top surfaces of the footplates (8) are flush with the top surface of the platform beam (2).
6. A foundation pit limb platform system according to claim 5, characterized in that the lower part of the footplate (8) is provided with a footplate support (9), the footplate support (9) is a concrete block with a support bottom plate, the lower part of the support bottom plate is connected with a vertically downward reinforcing steel bar, and the reinforcing steel bar is inserted into a pre-cast concrete foundation below.
7. A foundation pit bordering platform system as defined in claim 1, wherein supporting piles (11) are arranged at intervals on the side slope of the foundation pit bordering, and anchor rods (12) are additionally arranged between the supporting piles (11) and the side slope.
8. A foundation pit limb platform system according to claim 1, characterized in that at least one row of connecting rods (16) is arranged between the inclined struts (3), the inclined struts (3) are connected or welded with the crown beam (4) through fixing plate bolts, and the inclined struts (3) are connected or welded with the table beam (2) through fixing plate bolts.
9. A foundation pit limb platform system according to claim 1, wherein at least one lifting lug is provided on the column (1), the table beam (2) or the diagonal brace (3).
10. A foundation pit bordering platform system as defined in claim 1, characterized in that the outer sides of the columns (1), beams (2) and diagonal braces (3) are coated with rust-proof or corrosion-proof layers and provided with at least one earth connection.
CN201920453919.4U 2019-04-04 2019-04-04 Foundation pit limb platform system Active CN209873809U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201920453919.4U CN209873809U (en) 2019-04-04 2019-04-04 Foundation pit limb platform system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201920453919.4U CN209873809U (en) 2019-04-04 2019-04-04 Foundation pit limb platform system

Publications (1)

Publication Number Publication Date
CN209873809U true CN209873809U (en) 2019-12-31

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ID=68958375

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201920453919.4U Active CN209873809U (en) 2019-04-04 2019-04-04 Foundation pit limb platform system

Country Status (1)

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CN (1) CN209873809U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111335611A (en) * 2020-03-25 2020-06-26 中国建筑土木建设有限公司 Large-span cantilever member construction system and construction method thereof
CN112502212A (en) * 2020-12-08 2021-03-16 中交二航局第四工程有限公司 Rapid assembly platform suitable for taking soil in foundation pit and complete construction process

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111335611A (en) * 2020-03-25 2020-06-26 中国建筑土木建设有限公司 Large-span cantilever member construction system and construction method thereof
CN111335611B (en) * 2020-03-25 2022-05-13 中国建筑土木建设有限公司 Large-span cantilever member construction system and construction method thereof
CN112502212A (en) * 2020-12-08 2021-03-16 中交二航局第四工程有限公司 Rapid assembly platform suitable for taking soil in foundation pit and complete construction process
CN112502212B (en) * 2020-12-08 2022-06-24 中交二航局第四工程有限公司 Rapid assembly platform suitable for taking soil in foundation pit and complete construction process

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