CN114856248A - Corridor type safety channel applied to sloping type deep foundation pit and construction method - Google Patents
Corridor type safety channel applied to sloping type deep foundation pit and construction method Download PDFInfo
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- CN114856248A CN114856248A CN202210632257.3A CN202210632257A CN114856248A CN 114856248 A CN114856248 A CN 114856248A CN 202210632257 A CN202210632257 A CN 202210632257A CN 114856248 A CN114856248 A CN 114856248A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G27/00—Temporary arrangements for giving access from one level to another for men or vehicles, e.g. steps, ramps
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
Abstract
The invention discloses a corridor type safety channel applied to a slope-sinking type deep foundation pit and a construction method, the corridor type safety channel comprises a corridor, the corridor comprises two round steel columns, the two round steel columns are connected through horizontal bridging and vertical bridging which are arranged in a staggered mode, supporting plates are welded at the upper ends of the two round steel columns, a main beam is welded at the top of each supporting plate, a plurality of secondary beams are welded between the two main beams, figured steel plates are paved on the main beams and the secondary beams, the safety channel is arranged above the corridor, the safety channel comprises an I-shaped steel column welded on the main beams, two layers of top beams are welded at the top of the I-shaped steel column, a plurality of top plate distribution beams are distributed at intervals in the horizontal direction of the top beams, first top plates are paved on the top layer of the top beams and the top plate distribution beams, and second top plates are paved on the bottom layer of the top beams and the top plate distribution beams, the invention has the advantages of simple structure, convenient installation and disassembly and high practicability, the passing distance of constructors on the upper working surface and the lower working surface can be greatly shortened, and the working efficiency is improved; reasonable stress and beautiful appearance.
Description
Technical Field
The invention relates to the field of building construction, in particular to a corridor type safety channel applied to a sloping type deep foundation pit and a construction method.
Background
In the building construction process of the slope-type deep foundation pit, when a +/-0 node is reached, on one hand, the slope top of the foundation pit is far away from the first floor of the main body structure because the foundation pit is of the slope type and is the deep foundation pit, and on the other hand, the foundation pit cannot be backfilled because the whole ground reservoir needs foundation pit construction. The two reasons lead to constructor when wanting to get into the main part one deck, need follow the cat ladder earlier and descend the basement, walk the basement stair again and go up the main building, personnel pass inconveniently, and the transported material is also inconvenient, and the efficiency of construction is low, so, how to solve the personnel of putting sloping formula deep basal pit and goods safety, convenient the passing be a problem that remains to be solved.
Disclosure of Invention
The invention aims to provide a corridor type safety channel applied to an inclined deep foundation pit and a construction method aiming at the defects of the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows: a corridor type safety channel applied to a sloping type deep foundation pit comprises a corridor, wherein the corridor comprises two round steel columns fixed at the bottom of the foundation pit, the two round steel columns are connected through horizontal bridging and vertical bridging arranged in a staggered mode, supporting plates are welded at the upper ends of the two round steel columns, main beams are welded at the tops of the supporting plates, a plurality of secondary beams are welded between the two main beams, two ends of each secondary beam are welded on a web plate and an upper wing plate of each main beam, triangular supports welded on the web plates of the main beams are used for propping against the lower surfaces of the secondary beams, pattern steel plates are respectively paved on the main beams and the secondary beams, a safety channel is arranged above the corridor and comprises an I-shaped steel column welded on the main beams, two layers of top beams are welded at the tops of the I-shaped steel columns, a plurality of top plate distribution beams are distributed at intervals in the horizontal direction of the top beams, and first top plates are paved on the top beams of the top beams and the top plate distribution beams, and a second top plate is paved on the top beam and the top plate distribution beam on the lower layer.
Preferably, the safe passage further comprises a fence arranged on the i-shaped steel columns, the horizontal rectangular steel pipes of the fence are welded with the vertical rectangular steel pipes, an upper horizontal rectangular steel pipe and a lower horizontal rectangular steel pipe are welded between the adjacent i-shaped steel columns, and the vertical rectangular steel pipes are welded between the two horizontal rectangular steel pipes.
Preferably, a pit is formed in the bottom of the foundation pit, a concrete foundation is poured in the pit, an embedded part is fixed in the concrete foundation, and the bottom of the round steel column is welded and fixed with the embedded part.
Preferably, four reinforcing plates are welded to the periphery of the bottom of each round steel column, the bottom of each reinforcing plate is fixed to the surface of the concrete foundation, and the side face of each reinforcing plate is fixed to the surface of each round steel column in a welded mode.
Preferably, horizontal bridging and vertical bridging all set up the multiunit, and multiunit horizontal bridging and vertical bridging are at the equidistant distribution of vertical direction.
Preferably, a concrete platform is poured at the top of the foundation pit, one end of the main beam is fixed on the concrete platform, the other end of the main beam is welded on the leveling embedded part, and the leveling embedded part is arranged in one layer of the main building, so that the contact area between the main beam and the foundation pit bottom and the main building is large enough.
Preferably, the secondary beams are uniformly distributed along the horizontal direction of the main beam, and one secondary beam is distributed at intervals of 1 m.
Preferably, a ramp is arranged between the tail end of the main beam and the plate surface of the first floor of the main building.
A construction method comprises the following steps:
according to a corridor design drawing and the actual situation on site, determining the installation position of a corridor and the position of a flat embedded part, and pre-embedding a leveling embedded part in advance before pouring ring beam concrete on one floor of a main building;
s2, pouring of the concrete foundation and the concrete platform: digging a pit of 4m multiplied by 1m at the position of a circular steel column at the bottom of a foundation pit, binding a reinforcement cage in the pit, welding an embedded part supporting leg on the reinforcement cage, pouring a concrete foundation, leveling the pouring height with the surface of a steel plate of the embedded part, and pouring a supporting main beam for a concrete platform after digging 3m multiplied by 1m under the top of the foundation pit;
s3, mounting two round steel columns: the bottom of each round steel column is welded on an embedded part at the bottom of the foundation pit, the periphery of the bottom of each round steel column is welded and reinforced by four reinforcing plates, the top of each round steel column is welded with a supporting plate, and the two round steel columns are connected by a horizontal bridging and a vertical bridging;
s4, mounting two main beams: one end of each main beam is arranged on a concrete platform at the top of the foundation pit, the other end of each main beam is welded on a leveling embedded part embedded in the main body structure, and the middle part of each main beam is welded on a supporting plate at the top of two round steel columns;
s5, mounting of secondary beams: two ends of the secondary beam are welded on the web plate and the upper wing plate of the main beam, and the lower surface of the secondary beam is propped by a triangular support welded on the web plate of the main beam of the section steel;
s6, mounting of the ramp: the ramp is made of construction site reinforcement leftovers, and is directly hung on a main beam at the tail of the corridor and welded on the floor;
s7, paving the pattern steel plate: the pattern steel plates are laid on the main beam 2 and the secondary beam 3 in a spot welding manner;
s8, installing a safety channel;
s9, painting paint and hanging safety slogans.
Preferably, the S8 further includes the following steps:
s8.1, mounting of an I-shaped steel column, a top beam and a top plate distribution beam: the bottom of the I-shaped steel column is welded on the main beam, the top of the I-shaped steel column is welded with two layers of top beams, the distance between the upper top beam and the lower top beam is 0.5m, and the top plate distribution beams are uniformly distributed in the horizontal direction of the top beams at intervals of 1 m;
s8.2, laying the double-layer anti-smashing top: the first top plate is a construction site waste template and is laid on the upper top beam and the top plate distribution beam, and the second top plate is made of a 5mm steel plate and is laid on the lower top beam and the top plate distribution beam;
s8.3, welding of the fence: an upper transverse rectangular steel pipe and a lower transverse rectangular steel pipe are welded between every two I-shaped steel columns of the safety channel, wherein the lower transverse rectangular steel pipe is 0.1m away from the ground, the upper rectangular steel pipe is 1.5m away from the ground, and then a vertical rectangular steel pipe is welded between the upper rectangular steel pipe and the lower rectangular steel pipe at intervals of 0.15m in the vertical direction to form the fence of the safety channel.
Compared with the prior art, the invention has the beneficial effects that:
1. the length and the height of the invention are determined according to the actual situation on site, but the width is free, and the width can be designed according to the requirements of the construction number of projects, the size of transported goods and the like.
2. The invention has simple structure, convenient installation and disassembly and high practicability, can greatly shorten the passing distance of constructors on the upper working surface and the lower working surface, and improves the working efficiency.
3. The invention has reasonable stress and attractive appearance, and the safety channel has double-layer anti-smashing roofs, thereby preventing objects from falling from high altitude, improving the passing of the operation efficiency of constructors and ensuring the safety of the constructors.
4. The ramp of the corridor adopts an assembly method, the finished ramp is assembled on the ground and is directly hoisted at the tail of the corridor, integral hoisting is realized, and the installation speed is increased.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
fig. 1 is a front view of the present invention.
Fig. 2 is a schematic side view of the present invention.
Fig. 3 is a schematic distribution diagram of the main beams and the secondary beams of the present invention.
FIG. 4 is a schematic view of a leveling type embedded part on a ring beam at one layer of a main body structure.
FIG. 5 shows the connection mode of the bottom of the round steel column and the embedded part.
FIG. 6 is a schematic view of the assembled ramp of the present invention.
In the figure: the concrete platform comprises 1-round steel columns, 2-main beams, 3-secondary beams, 4-pattern steel plates, 51-horizontal cross braces, 52-vertical cross braces, 6-supporting plates, 7-embedded parts, 8-ramps, 9-safety channels, 91-I-shaped steel columns, 92-top beams, 93-top plate distribution beams, 94-first top plates, 95-second top plates, 96-fences, 10-leveling embedded parts, 11-triangular supports, 12-reinforcing plates, 13-concrete foundations and 14 concrete platforms.
Detailed Description
The technical solution of the present invention is described in detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the embodiments.
Referring to fig. 1 to 6, a corridor type safety passageway applied to a sloping deep foundation pit comprises a corridor, wherein the corridor comprises two round steel columns 1 fixed at the bottom of the foundation pit, the specification is phi 400mm multiplied by 10mm, the length of the corridor is designed according to the actual height from the bottom of the foundation pit to the top of the foundation pit on site, the two round steel columns 1 are connected through horizontal cross braces 51 and vertical cross braces 52 which are arranged in a staggered mode, the connection strength of the two round steel columns 1 is ensured, a supporting plate 6 is welded at the upper ends of the two round steel columns 1, a main beam 2 is welded at the top of the supporting plate 6, the main beam 2 is two H-shaped steel, the specification is 600mm multiplied by 200mm multiplied by 10mm multiplied by 15mm, a plurality of secondary beams 3 are welded between the two main beams 2, two ends of the secondary beams 3 are welded on a web plate and an upper wing plate of the main beam 2, the lower surface of the secondary beam 3 is supported by a triangular brace 11 welded on the web plate of the main beam 2, and the connection strength and the secondary beams 2 are ensured, the main beam 2 and the secondary beam 3 are both paved with a patterned steel plate 4 for personnel to pass through.
The top of vestibule is provided with safe passageway 9, safe passageway 9 is including welding the I-shaped steel post 91 on girder 2, the top welding of I-shaped steel post 91 has two-layer back timber 92, interval distribution has a plurality of roof distribution roof beams 93 on the horizontal direction of back timber 92, upper strata top beam 92 and roof distribution roof beam 93 upper berth are equipped with first roof 94, lower floor's top timber 92 and roof distribution roof beam 93 upper berth are equipped with second roof 95, I-shaped steel post 91, back timber 92 and roof distribution roof beam 93 specification are 125mm x 7mm x 10 mm's H shaped steel.
The safety channel 9 further comprises a fence 96 arranged on the I-shaped steel column 91, the horizontal rectangular steel pipes of the fence 96 and the vertical rectangular steel pipes are welded to form the safety channel, an upper horizontal rectangular steel pipe and a lower horizontal rectangular steel pipe are welded between the adjacent I-shaped steel columns 91, the vertical rectangular steel pipes are welded between the two horizontal rectangular steel pipes, and the fence 96 can prevent personnel from falling off from the corridor.
The hole has been seted up and concrete foundation 13 has been pour in the hole to the bottom of foundation ditch, concrete foundation 13 internal fixation has buries 7, the bottom of round steel post with bury 7 welded fastening, four gusset plates 12 have all been welded all around to the bottom of every round steel post 1, the bottom and the concrete foundation 13 fixed surface of gusset plate 12, the side and the 1 surface welded fastening of round steel post of gusset plate 12, bury 7 and the setting of gusset plate 12 and can increase the acceptance of round steel post 1, round steel post 1 non-deformable and collapse.
Be provided with ramp 8 between the face of girder 2's end and main building one deck, ramp 8 is formed by the preparation of building site reinforcing bar leftover bits, directly hang the floor welding on girder 2 at the vestibule tail, become the difference in height between vestibule girder 2 and the floor face ramp 8 and make things convenient for personnel's upper and lower safe current, also make things convenient for the transportation of goods, the characteristics of its ramp are with triangle-shaped ramp support body of job site phi 25 mm's ribbed reinforcing bar clout welding, with 5mm thick steel sheet shop on the support body inclined plane can, ramp 8 is assembled on ground, directly hang to go the installation, realized that the unit is whole to hang and rise, and the installation speed is improved.
The construction method comprises the following steps:
s1, measuring and positioning, and embedding the leveling embedded part 10: according to a corridor design drawing and the actual situation on site, determining the installation position of a corridor and the position of the leveling embedded part 10, and pre-embedding the leveling embedded part 10 in advance before pouring ring beam concrete on one floor of a main building;
s2, pouring the concrete foundation 13 and the concrete platform 14: digging a 4m multiplied by 1m pit at the bottom of a foundation pit, binding a reinforcement cage in the pit, welding a support leg of an embedded part 7 on the reinforcement cage, pouring a concrete foundation 13, leveling the pouring height with the surface of a steel plate of the embedded part 7, digging 3m multiplied by 1m under the top of the foundation pit, and pouring a concrete platform 14 for supporting a main beam 2;
s3, mounting two round steel columns 1: the bottom of each round steel column 1 is welded on an embedded part 7 at the bottom of a foundation pit, the periphery of the bottom of each round steel column 1 is welded and reinforced by four reinforcing plates 12, a supporting plate 6 is welded at the top of each round steel column 1, the two round steel columns 1 are connected by horizontal cross braces 51 and vertical cross braces 52, the horizontal cross braces 51 and the vertical cross braces 52 are provided with multiple groups, the multiple groups of horizontal cross braces 51 and the vertical cross braces 52 are distributed at equal intervals in the vertical direction, and the overall strength formed by the two round steel columns 1 is enhanced;
s4, mounting two main beams 2: one end of each main beam 2 is arranged on a concrete platform 14 at the top of a foundation pit, the other end of each main beam is welded on a leveling embedded part 10 pre-embedded in a main structure, the middle part of each main beam 2 is welded on a supporting plate 6 at the top of two round steel columns 1, the main beam 2 is made of two H-shaped steels, the specification is 600mm multiplied by 200mm multiplied by 10mm multiplied by 15mm, and the strength of the whole steel beam is ensured;
s5, mounting of the secondary beam 3: the secondary beams 3 are uniformly distributed along the horizontal direction of the main beam 2, one secondary beam 3 is distributed at intervals of 1m, two ends of each secondary beam 3 are welded on a web plate and an upper wing plate of the main beam 2, the lower surface of each secondary beam 3 is propped against a triangular support 11 welded on the web plate of the H-shaped steel main beam 2, the welding area of each secondary beam 3 and the main beam 2 is increased, and the secondary beams 3 and the H-shaped steel with the specification of 125mm multiplied by 7mm multiplied by 10mm are considered after the optimal balance points of the corridor weight and the load are considered;
s6, mounting of the ramp 8: the ramp 8 is made of construction site reinforcement leftovers, the floors are directly hung and welded on the main beam 2 at the tail of the corridor, and the height difference between the main beam 2 of the corridor and the floor surface is changed into the ramp 8, so that personnel can conveniently and safely pass up and down;
s7, paving the pattern steel plate 4: the pattern steel plate 4 is laid on the main beam 2 and the secondary beam 3 in a spot welding manner and is used for personnel to pass through;
s8, installing a safety channel 9;
s9, painting paint and hanging safety slogans, so that the appearance is attractive and elegant, and constructors are reminded of safety all the time.
The above S8 further includes the following steps:
s8.1, mounting of an I-shaped steel column 91, a top beam 92 and a top plate distribution beam 93: the bottom of the I-shaped steel column 91 is welded on the main beam 2, the top of the I-shaped steel column 91 is welded with two layers of top beams 92, the distance between the upper top beam 92 and the lower top beam 92 is 0.5m, the top plate distribution beams 93 are uniformly distributed in the horizontal direction of the top beams 92 at intervals of 1m, and the specifications of the I-shaped steel column 91, the top beams 92 and the top plate distribution beams 93 of the safety channel 9 are H-shaped steel with the dimensions of 125mm multiplied by 7mm multiplied by 10 mm;
s8.2, laying the double-layer anti-smashing top: the first top plate 94 is a waste template of a construction site and is laid on the upper-layer top beam 92 and the top plate distribution beam 93, the second top plate 95 is made of a 5mm steel plate and is laid on the lower-layer top beam 92 and the top plate distribution beam 93, and then double-layer anti-smashing top laying can be completed, so that convenience of constructors in passing is guaranteed, meanwhile, objects falling from the high air are prevented, and safe passing is guaranteed;
s8.3, welding the fence 96: the fence is formed by welding a horizontal rectangular steel pipe and a vertical rectangular steel pipe, an upper horizontal rectangular steel pipe and a lower horizontal rectangular steel pipe are welded between every two I-shaped steel columns 91 of the safety channel 9, wherein the lower horizontal rectangular steel pipe is 0.1m away from the ground, the upper rectangular steel pipe is 1.5m away from the ground, and then the vertical rectangular steel pipes are welded between the upper and lower horizontal rectangular steel pipes at intervals of 0.15m in the vertical direction to form a fence 96 of the safety channel 9.
Therefore, the length and the height of the invention are determined according to the actual situation on site, but the width is free, and the width design can be carried out according to the requirements of the construction number of people in the project, the size of the transported goods and the like; the structure is simple, the installation and the removal are convenient, the practicability is high, the passing distance of constructors on the upper working surface and the lower working surface can be greatly shortened, and the working efficiency is improved; the stress is reasonable, the appearance is attractive, the safety channel 9 is provided with a double-layer anti-smashing top, objects falling from the high altitude can be prevented, the operation efficiency of constructors is improved, and the safety of the constructors can be ensured; the ramp 8 of the corridor adopts an assembly type method, the finished ramp 8 is assembled on the ground and is directly hoisted at the tail part of the corridor, the integral hoisting is realized, and the installation speed is improved.
As above, while the invention has been shown and described with reference to certain preferred embodiments, it is not to be construed as limited thereto. Various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. The utility model provides a be applied to vestibule formula escape way of putting sloping formula deep basal pit, includes the vestibule, its characterized in that: the corridor comprises two round steel columns fixed at the bottom of the foundation pit, the two round steel columns are connected through horizontal cross braces and vertical cross braces which are arranged in a staggered mode, supporting plates are welded at the upper ends of the two round steel columns, main beams are welded at the tops of the supporting plates, a plurality of secondary beams are welded between the two main beams, the two ends of the secondary beam are welded on the web plate and the upper wing plate of the main beam, the lower surface of the secondary beam is supported by a triangular support welded on the web plate of the main beam, the main beam and the secondary beam are respectively paved with a pattern steel plate, a safety channel is arranged above the corridor, the safety channel comprises an I-shaped steel column welded on a main beam, two layers of top beams are welded at the top of the I-shaped steel column, a plurality of top plate distribution beams are distributed on the top beams at intervals in the horizontal direction, a first top plate is laid on the upper layer of the top beams and the top plate distribution beams, and a second top plate is laid on the lower layer of the top beams and the top plate distribution beams.
2. The corridor type safety channel applied to the slope type deep foundation pit according to claim 1, wherein the corridor type safety channel comprises: the safety channel further comprises a fence arranged on the I-shaped steel columns, the horizontal rectangular steel pipes of the fence and the vertical rectangular steel pipes are welded to form the safety channel, an upper horizontal rectangular steel pipe and a lower horizontal rectangular steel pipe are welded between the adjacent I-shaped steel columns, and the vertical rectangular steel pipes are welded between the two horizontal rectangular steel pipes.
3. The corridor type safe passage applied to the sloping type deep foundation pit according to claim 2, characterized in that: the bottom of the foundation pit is provided with a pit, a concrete foundation is poured in the pit, an embedded part is fixed in the concrete foundation, and the bottom of the round steel column is welded and fixed with the embedded part.
4. The corridor type safety channel applied to the slope type deep foundation pit according to claim 3, wherein: every four gusset plates are welded all around the bottom of round steel post, the bottom and the concrete foundation surface of gusset plate are fixed, and the side and the round steel post surface welding of gusset plate are fixed.
5. The corridor type safety channel applied to the slope type deep foundation pit according to claim 3, wherein: horizontal bridging and vertical bridging all set up the multiunit, and multiunit horizontal bridging and vertical bridging are at the equidistant distribution of vertical direction.
6. The corridor type safety channel applied to the slope type deep foundation pit according to claim 3, wherein: the concrete platform has been pour at the foundation ditch top, the one end of girder is fixed at the concrete bench, and the other end welding is on the buried piece of making level, the buried piece setting of making level is in main building one floor.
7. The corridor type safety channel applied to the slope type deep foundation pit according to claim 3, wherein: the secondary beams are uniformly distributed along the horizontal direction of the main beam, and one secondary beam is distributed at intervals of 1 m.
8. The corridor type safety channel applied to the slope type deep foundation pit according to claim 3, wherein: a ramp is arranged between the tail end of the main beam and the plate surface of the first floor of the main building.
9. A method of constructing a secure tunnel according to any one of claims 1 to 8, comprising: the method comprises the following steps:
s1, measuring and positioning, and embedding a leveling embedded part: according to a corridor design drawing and the actual situation on site, determining the installation position of a corridor and the position of a flat embedded part, and pre-embedding a leveling embedded part in advance before pouring ring beam concrete on one floor of a main building;
s2, pouring of the concrete foundation and the concrete platform: digging a pit of 4m multiplied by 1m at the position of a circular steel column at the bottom of a foundation pit, binding a reinforcement cage in the pit, welding an embedded part supporting leg on the reinforcement cage, pouring a concrete foundation, leveling the pouring height with the surface of a steel plate of the embedded part, and pouring a supporting main beam for a concrete platform after digging 3m multiplied by 1m under the top of the foundation pit;
s3, mounting two round steel columns: the bottom of each round steel column is welded on an embedded part at the bottom of the foundation pit, the periphery of the bottom of each round steel column is welded and reinforced by four reinforcing plates, the top of each round steel column is welded with a supporting plate, and the two round steel columns are connected by a horizontal bridging and a vertical bridging;
s4, mounting two main beams: one end of each main beam is arranged on a concrete platform at the top of the foundation pit, the other end of each main beam is welded on a leveling embedded part embedded in the main body structure, and the middle part of each main beam is welded on a supporting plate at the top of two round steel columns;
s5, mounting of secondary beams: two ends of the secondary beam are welded on the web plate and the upper wing plate of the main beam, and the lower surface of the secondary beam is propped by a triangular support welded on the web plate of the main beam of the section steel;
s6, mounting of the ramp: the ramp is made of construction site reinforcement leftovers, and is directly hung on a main beam at the tail of the corridor and welded on the floor;
s7, paving the pattern steel plate: the pattern steel plates are laid on the main beam 2 and the secondary beam 3 in a spot welding manner;
s8, installing a safety channel;
s9, painting paint and hanging safety slogans.
10. A construction method according to claim 9, wherein said S8 further comprises the steps of:
s8.1, mounting of an I-shaped steel column, a top beam and a top plate distribution beam: the bottom of the I-shaped steel column is welded on the main beam, the top of the I-shaped steel column is welded with two layers of top beams, the distance between the upper top beam and the lower top beam is 0.5m, and the top plate distribution beams are uniformly distributed in the horizontal direction of the top beams at intervals of 1 m;
s8.2, laying the double-layer anti-smashing top: the first top plate is a construction site waste template and is laid on the upper top beam and the top plate distribution beam, and the second top plate is made of a 5mm steel plate and is laid on the lower top beam and the top plate distribution beam;
s8.3, welding of the fence: an upper transverse rectangular steel pipe and a lower transverse rectangular steel pipe are welded between every two I-shaped steel columns of the safety channel, wherein the lower transverse rectangular steel pipe is 0.1m away from the ground, the upper rectangular steel pipe is 1.5m away from the ground, and then a vertical rectangular steel pipe is welded between the upper rectangular steel pipe and the lower rectangular steel pipe at intervals of 0.15m in the vertical direction to form the fence of the safety channel.
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| CN214740094U (en) * | 2020-11-03 | 2021-11-16 | 山东冠鲁置业有限公司 | High-altitude falling object blocking fence for building construction |
| CN215906845U (en) * | 2021-09-02 | 2022-02-25 | 中建一局集团建设发展有限公司 | Large-span vestibule mounting structure in foundation pit |
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