CN116717112B - A construction ramp support auxiliary structure based on foundation pit crown beams - Google Patents
A construction ramp support auxiliary structure based on foundation pit crown beams Download PDFInfo
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- CN116717112B CN116717112B CN202311011291.XA CN202311011291A CN116717112B CN 116717112 B CN116717112 B CN 116717112B CN 202311011291 A CN202311011291 A CN 202311011291A CN 116717112 B CN116717112 B CN 116717112B
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- 238000010276 construction Methods 0.000 title claims abstract description 52
- 238000009434 installation Methods 0.000 claims abstract description 9
- 230000035939 shock Effects 0.000 claims abstract description 6
- 239000006096 absorbing agent Substances 0.000 claims description 12
- 239000012530 fluid Substances 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 5
- 230000002787 reinforcement Effects 0.000 claims description 4
- 230000004308 accommodation Effects 0.000 claims 4
- 230000008093 supporting effect Effects 0.000 abstract description 77
- 230000000694 effects Effects 0.000 abstract description 5
- 238000010521 absorption reaction Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 14
- 230000008569 process Effects 0.000 description 11
- 230000006872 improvement Effects 0.000 description 10
- 238000013016 damping Methods 0.000 description 5
- 239000012634 fragment Substances 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 230000003014 reinforcing effect Effects 0.000 description 4
- 230000007480 spreading Effects 0.000 description 4
- 238000003892 spreading Methods 0.000 description 4
- 238000009412 basement excavation Methods 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 238000011900 installation process Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000011150 reinforced concrete Substances 0.000 description 2
- 230000000246 remedial effect Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Classifications
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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
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
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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
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
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- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- General Engineering & Computer Science (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
本发明一种基于基坑冠梁的施工坡道支撑辅助结构，涉及基坑施工辅助结构领域，安装在施工坡道的底部，包括：两侧夹结构、一支撑主架，支撑主架包含锁固在施工坡道底部的安装架，垂直插接在安装架下方的支撑立杆，套装在支撑立杆底部的均摊板，均摊板贴合在土方内；一中段配合板，中段配合板与均摊板平行并被支撑立杆贯穿，中段配合板包括卡夹在冠梁内部两个支承板之间的纵向装夹卸力单元，以及卡夹在支承板内侧的扇形口中的横向装夹卸力单元，支撑立杆受施工坡道的压力并经纵向装夹卸力单元、横向装夹卸力单元传递到冠梁上，解决了冠梁对支撑结构的掣肘问题，让受限制的支撑结构仍能够发挥均匀的减震、支撑效果。
The invention is a construction ramp support auxiliary structure based on foundation pit crown beams, which relates to the field of foundation pit construction auxiliary structures. It is installed at the bottom of the construction ramp and includes: a clamp structure on both sides and a main support frame. The main support frame includes a lock. The installation frame fixed at the bottom of the construction ramp, the support pole vertically plugged under the installation frame, and the equalizing plate set at the bottom of the supporting pole. The equalizing plate fits in the earthwork; a middle-section matching plate, and the middle-section matching plate is connected with the equalizing plate. The plate is parallel and penetrated by the support pole. The middle matching plate includes a longitudinal clamping and unloading unit clamped between the two support plates inside the crown beam, and a transverse clamping and unloading unit clamped in the fan-shaped opening on the inside of the support plate. , the pressure of the support pole is affected by the construction ramp and is transmitted to the crown beam through the longitudinal clamping and unloading unit and the transverse clamping and unloading unit, which solves the problem of the crown beam constraining the support structure and allows the restricted support structure to still be able to Produce uniform shock absorption and support effects.
Description
Technical Field
The invention relates to a foundation pit construction auxiliary structure, in particular to a construction ramp support auxiliary structure based on a foundation pit crown beam.
Background
The foundation pit belongs to temporary engineering, and the foundation pit has the functions of providing a space, enabling the masonry operation of a foundation to be carried out according to the position designated by the design, and dividing the foundation pit into three stages, namely a primary foundation pit: engineering integrating the supporting structure and the foundation structure, wherein the excavation depth is more than 10m, and historic or modern excellent buildings and important pipelines are required to be strictly protected within the excavation influence range; three-stage foundation pit: the excavation depth is less than 7m, and the surrounding environment has no special requirement; second grade foundation pit: the foundation pit except the first-level foundation pit and the third-level foundation pit belongs to the second-level foundation pit, and in the foundation with different geological and hydrogeological conditions of different projects, the foundation pit projects have great difference, and particularly in the first-level foundation pit, the construction difficulty is higher due to deep depth.
In the existing deep foundation pit engineering, a steel structure ramp is adopted, the built-in ramp is extended to the soil of the central island, so that construction machinery can directly travel to the interior of the foundation pit from the ground through the ramp to transport earthwork and materials, the ground and the interior of the foundation pit form a transport channel, and in the process of installation of the ramp, a plurality of groups of support structures are required to be arranged on the bottom surface of the ramp for improving the stability of the ramp, and the stability of the ramp can be optimized.
In the process of designing the supporting structure, a crown beam exists between the slope and the bottom earthwork, in the construction process of a foundation pit, the annular crown beam is of a common mode, and occupies a certain plane area, and although the annular crown beam is partially hollowed out and arranged, a rod piece of the supporting structure can pass through the supporting structure, because the crown beam is arranged to have certain standardization, the standardized supporting plate and the opening are arranged to cause the rod piece to be arranged to have a stopper elbow, the supporting structure is difficult to be provided with criss-cross trusses according to a preset structure and can only be arranged according to a certain direction, so that the strength of the supporting structure is insufficient, and the supporting structure cannot provide enough stable supporting force for the slope.
Therefore, the application aims at providing a construction ramp support auxiliary structure based on foundation pit crown beams, which can extend to the earth from the bottom of a ramp and is arranged on the crown beams, so that the pressure born by the ramp can be uniformly dispersed to the crown beams, and the limited support structure can still play a uniform damping and supporting effect.
Disclosure of Invention
The invention provides a construction ramp support auxiliary structure based on a foundation pit crown beam, which can effectively solve the problems.
The invention is realized in the following way:
construction ramp support auxiliary structure based on foundation ditch guan liang installs in the bottom of construction ramp, includes: the movable ends of the side clamping structures are clamped at two sides of the construction ramp; the support main frame comprises a mounting frame locked at the bottom of the construction ramp, a support vertical rod vertically inserted below the mounting frame, and a uniform plate sleeved at the bottom of the support vertical rod, wherein the uniform plate is attached in earthwork; the middle section matching plate is parallel to the uniform spreading plate and is penetrated by the supporting upright rod, the middle section matching plate comprises a longitudinal clamping and force unloading unit clamped between two supporting plates in the crown beam and a transverse clamping and force unloading unit clamped in a fan-shaped opening on the inner side of the supporting plates, and the supporting upright rod is under the pressure of a construction ramp and is transmitted to the crown beam through the longitudinal clamping and force unloading unit and the transverse clamping and force unloading unit.
As a further improvement, the longitudinal clamping and force-releasing unit comprises an outer side force-releasing unit and an inner side force-releasing unit, wherein the outer side force-releasing unit is clamped on the crown beam, and the inner side force-releasing unit is clamped between the two supporting plates.
As a further improvement, the outer side force unloading unit comprises an extension plate which is fixed on the supporting upright rod and attached to the top surface of the crown beam, the extension plate is integrally formed at the bottom of the extension plate and is abutted against the side attaching plate on the inner side wall of the crown beam, and the extension plate is pressed on the upper top surface of the crown beam in a pressing mode.
As a further improvement, an inner tangent plane is arranged at the position of the supporting upright rod corresponding to the middle section matching plate, one end of the extending plate, which is close to the supporting upright rod, is attached to the bottom of the inner tangent plane, and the extending plate is fixed on the inner tangent plane through a locking bolt.
As a further improvement, the longitudinal clamping force unloading unit further comprises a lower attaching plate which is locked at the bottom of the side attaching plate and parallel to the extending plate, a U-shaped buckle plate sleeved on the outer sides of the side attaching plate and the lower attaching plate is inserted into two side edges of the U-shaped buckle plate and locked on connecting pieces in the side attaching plate and the lower attaching plate, and the U-shaped buckle plate is in compression joint with the outer sides of the crown beam.
As a further improvement, the transverse clamping and unloading unit comprises two clamping seats hinged to the middle section matching plate, the clamping seats are of U-shaped structures, and openings of the clamping seats are clamped on the inner side faces of the sector-shaped openings.
As a further improvement, the transverse clamping and force unloading unit further comprises an outward expansion structure arranged on one closed side of the two clamping seats, the outward expansion structure comprises an arc-shaped elastic sheet which is abutted between the two clamping seats, a through hole in the middle of the arc-shaped elastic sheet is formed, a T-shaped pin penetrates through the through hole and is locked on the supporting upright rod, and the top edge of the T-shaped pin is arranged at intervals with the outer edge of the clamping seats.
As a further improvement, the middle section matching plate further comprises a pressure dividing plate locked at the bottoms of the longitudinal clamping and unloading unit and the transverse clamping and unloading unit, the pressure dividing plate comprises a plurality of mounting holes corresponding to the supporting vertical rods, the pressure dividing plate is sleeved on the supporting vertical rods and respectively attached to the shock absorbers at the bottoms of the longitudinal clamping and unloading unit and the transverse clamping and unloading unit, and the shock absorbers are arranged at intervals with the mounting holes.
As a further improvement, the utility model also comprises an external reinforcement, the external reinforcement is a plurality of X-shaped connecting frames welded on the outer side of the supporting upright rod, the top of X type link welds in the bottom of division board, just the bottom of X type link welds on the samming board.
As a further improvement, the side clamp structure comprises a containing cavity fixedly connected to the top of the mounting frame, a containing cavity which is arranged in the containing cavity and faces one side of the construction ramp, fluid is contained in the containing cavity, a movable block which is slidably arranged in the containing cavity is embedded into an elastic valve which is arranged on the side of the containing cavity, a cross small hole is formed in the elastic valve, the cross small hole is unfolded and then communicated with the hollow containing cavity, and a liquid sensor is arranged in the containing cavity.
The beneficial effects of the invention are as follows:
the invention firstly uses the conventional mounting frame and the supporting upright post to conventionally support the construction ramp, but the supporting upright post cannot form a truss structure due to the obstruction of the inner supporting plate of the crown beam and the sector opening, so the invention further arranges a middle section matching plate at the middle section of the supporting upright post, the middle section matching plate is overhung and arranged on the crown beam, and the pressure and torsion born by the supporting upright post are uniformly dispersed to the whole crown beam through the longitudinal clamping and force unloading unit and the transverse clamping and force unloading unit, so that the crown beam can provide a certain support for the construction ramp with assistance of the crown beam, thereby making up the elbow of the supporting structure due to the arrangement of the crown beam, and the construction ramp can be stably put into use.
Because the annular crown beam has the unique shape with the structures such as the supporting plate and the sector opening, the structure needs to have pertinence when the force is dispersed to the crown beam, and the supporting plate and the sector opening need to be avoided and simultaneously attached to the areas around the supporting plate and the sector opening, and the longitudinal clamping and unloading unit and the transverse clamping and unloading unit both need to be kept away and attached, specifically, the invention comprises the following steps:
in the setting process of the longitudinal clamping force unloading unit, because the longitudinal clamping force unloading unit is positioned between two support plates, the points on which the longitudinal clamping force unloading unit can be attached are more, the more the points on which the longitudinal clamping force unloading unit can be attached are, the better the unloading effect is, the less damage to the crown Liang Shandian is caused, the longitudinal clamping force unloading unit adopts a three-point clamping mode, the outer side force unloading unit is clamped on the crown beam, and the inner side force unloading unit is clamped on the two support plates of the crown beam;
in fact, although the outer side force unloading unit and the inner side force unloading unit extend in different directions, the outer side force unloading unit and the inner side force unloading unit are partially similar, and specifically, the outer side force unloading unit and the inner side force unloading unit both comprise an extension plate attached to the crown beam and a side attaching plate attached to the inner side wall of the crown beam, and the force born by the supporting upright rod is guided to the crown beam along the T-shaped structure through the T-shaped structure formed by the extension plate and the side attaching plate and uniformly diverges from the two faces, so that load gathering points are reduced;
in the installation process of the T-shaped structure formed by the extension plate and the side flitch, if only a simple welding operation is adopted, the method is obviously inapplicable in the process of disassembling and rapidly transferring to a foundation pit group, so the method is further used for cutting an internal cutting surface in a supporting upright rod, the extension plate is additionally arranged into an L-shaped structure, and the extension plate is locked to the internal cutting surface through a locking bolt, so that the longitudinal clamping and unloading unit can realize the detachable effect without affecting the unloading area, and the method can be more flexible in the process of assembling, disassembling and rapidly transferring;
the outer side force unloading unit is in direct contact with the crown beam relative to the inner side force unloading unit, so that the outer side force unloading unit can be extended to the outer side of the crown beam to form multistage fixation;
compared with the complex space environment of the longitudinal clamping and unloading unit, the installation environment of the transverse clamping and unloading unit is free, and the area of the sector opening is fixed, so that the transverse clamping and unloading unit is provided with two symmetrically arranged clamping seats, and the two symmetrically arranged clamping seats are clamped on the inner side surface of the sector opening, namely the inner side surface of the supporting plate, and are fixed and unloaded in a clamping mode.
However, because the crown beam is a reinforced concrete structure formed by pouring cement on the reinforcing steel bars, if the clamping seats are fixed on the crown beam in a nailing mode, although the fixing strength can be ensured, the strength of the crown beam is damaged in an intangible way, the invention further arranges an outward expansion structure between the two clamping seats, and the two clamping seats are outward expanded through the arc-shaped elastic sheet on the outward expansion structure, so that the two clamping seats can be tightly fixed on the inner side surface of the crown beam, and meanwhile, in order to avoid the direct displacement caused by no support in the middle part of the arc-shaped elastic sheet, a T-shaped pin is inserted in the middle part of all the arc-shaped elastic sheets, and the tail end of the T-shaped pin is directly connected with the support upright rod to provide positioning and support for all the arc-shaped elastic sheets.
After the partial pressure of the longitudinal clamping force unloading unit and the transverse clamping force unloading unit is passed through, a vibration damper is further arranged at the bottom of the whole middle section matching plate, wherein the vibration damper is a particle damping vibration damper, and can disperse partial force which is still downwards transmitted after the longitudinal clamping force unloading unit and the transverse clamping force unloading unit are unloaded into the atmosphere through vibration of particle damping, so that the phenomenon that the vibration amplitude of the lower half section of the supporting upright rod is overlarge can be avoided.
The invention sets X-shaped connecting frame at the lower end of the crown beam, which is welded on the supporting upright pole to disperse the original single-point connection of the supporting upright pole and the uniform plate into three-point connection, thus the lower end of the supporting upright pole is in a dispersed and fixed state, and the lowest end of the supporting upright pole is not easy to bend and deform in a small truss structure mode.
The invention further provides a side clamping structure at the forefront position of the supporting auxiliary structure, namely at two sides of a construction ramp, in the vibration process of a daily ramp, vibration can be buffered through the movement of a movable block, so that the small-amplitude position of the ramp can be reset after a vehicle passes through the ramp, when the ramp is subjected to severe vibration or larger-amplitude sliding, the movable block can be enabled to be pressed into a containing cavity in the whole by instantaneous deflection, fluid in the containing cavity is pressed into an elastic valve in the moment, the elastic valve is enabled to be completely deformed to the extent enough to allow the fluid to pass through, a liquid sensor in the containing cavity senses the fluid and a runaway signal is rapidly sent to a control center, partial deformation of the ramp is prompted to occur for a worker, and remedial measures are rapidly taken, so that the situation that the small deflection cannot be found by manual observation is avoided.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some examples of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of a top view structure of a construction ramp support auxiliary structure based on a foundation pit crown beam, the crown beam and a ramp.
Fig. 2 is a schematic top view of a construction ramp support auxiliary structure based on a foundation pit crown beam and a ramp cooperation structure according to an embodiment of the present invention.
Fig. 3 is a schematic top view of a construction ramp support auxiliary structure based on a foundation pit crown beam according to an embodiment of the present invention.
Fig. 4 is a schematic side view of a longitudinal clamping and unloading unit according to an embodiment of the present invention.
Fig. 5 is a schematic top view of a transverse clamping and unloading unit according to an embodiment of the present invention.
Fig. 6 is a schematic front view of a construction ramp support auxiliary structure based on a foundation pit crown beam according to an embodiment of the present invention.
Fig. 7 is a schematic bottom view of a split plate according to an embodiment of the present invention.
Fig. 8 is a schematic structural view of a shock absorber according to an embodiment of the present invention.
Fig. 9 is a schematic diagram of an internal structure of a side clip structure according to an embodiment of the present invention.
Detailed Description
For the purpose of making embodiments of the present invention fall within the scope of the present invention. Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, based on the embodiments of the invention, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the invention.
In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as referring to purposes, technical solutions and advantages of the present invention in any way. All other implementations, which can be derived by a person skilled in the art without making any inventive effort, show or imply relative importance or implicitly indicate the number of technical features indicated on the basis of the implementations in the invention. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
As can be seen from fig. 1, the foundation pit applied in this embodiment adopts a crown beam with a ring shape, and for cooperation with the steel bars and subsequent foundation construction, the crown beam is divided into an inner ring structure and an outer ring structure, and a plurality of support plates a arranged at intervals are arranged on the inner side of the crown beam, and sector openings B are formed in the support plates a.
Referring to fig. 1 to 9, a construction ramp support auxiliary structure based on a foundation pit crown beam is installed at the bottom of a construction ramp, and includes: the movable ends of the side clamping structures 10 are clamped at two sides of the construction ramp; the support main frame 20 comprises a mounting frame 21 locked at the bottom of the construction ramp, a support upright rod 22 vertically inserted below the mounting frame 21, and a uniform plate 23 sleeved at the bottom of the support upright rod 22, wherein the uniform plate 23 is attached in the earthwork; the middle section matching plate 30 is parallel to the uniform spreading plate 23 and is penetrated by the supporting upright 22, the middle section matching plate 30 comprises a longitudinal clamping and unloading unit 31 clamped between two supporting plates A in the crown beam, and a transverse clamping and unloading unit 32 clamped in a fan-shaped opening B in the inner side of the supporting plates A, and the supporting upright 22 is pressed by a construction ramp and is transmitted to the crown beam through the longitudinal clamping and unloading unit 31 and the transverse clamping and unloading unit 32.
At the foremost position of the supporting auxiliary structure, namely at two sides of the construction ramp, the side clamping structure 10 comprises a containing cavity 11 fixedly connected to the top of the mounting frame 21, a containing cavity 12 arranged in the containing cavity 11 and facing one side of the construction ramp, fluid is contained in the containing cavity 12, a movable block 13 slidably arranged in the containing cavity 12, an elastic valve 14 embedded in the containing cavity 12 and arranged at the side of the containing cavity 12, a cross small hole is arranged on the elastic valve 14, the cross small hole is opened and then communicated with the hollow containing cavity 11, a liquid sensor 15 arranged in the containing cavity 11 is arranged in the process of shaking the daily ramp by lifting the side clamping structure 10, vibration can be buffered through the movement of the movable block 13, so that the small-amplitude position of the ramp can be reset after the vehicle passes through, when the ramp is subjected to severe vibration or larger-amplitude sliding, the movable block 13 is completely pressed into the accommodating cavity 11 due to instantaneous deflection, fluid in the accommodating cavity 12 is instantaneously pressed into the elastic valve 14, the elastic valve 14 is completely deformed to the extent that the fluid passes through, the liquid sensor 15 in the accommodating cavity 11 senses the fluid and rapidly sends an out-of-control signal to a control center, a worker is prompted that the ramp is partially deformed, remedial measures are rapidly taken, and the situation that the slight deflection cannot be found through manual observation is avoided.
In the present embodiment, although the side clamping structure 10 forms a certain constraint at the left and right ends, in practice, the main support is required by the support main frame 20, but since the distance from the bottom of the construction ramp to the earthwork of the foundation pit is long, the simple straight bar structure is difficult to achieve the supporting effect, and is easily twisted off due to torsion factors.
In this example, the conventional mounting frame 21 and the supporting upright 22 are used for supporting the construction ramp conventionally, but the supporting upright 22 cannot form a truss structure due to the obstruction of the inner supporting plate A and the fan-shaped opening B of the crown beam, so the middle section matching plate 30 is further arranged at the middle section of the supporting upright 22, the middle section matching plate 30 is overhung and arranged on the crown beam, and the pressure and torsion born by the supporting upright 22 are uniformly dispersed to the whole crown beam through the longitudinal clamping and unloading unit 31 and the transverse clamping and unloading unit 32, so that the crown beam is used for supporting the construction ramp to a certain extent by assistance of the crown beam, thereby making up the elbow of the supporting structure due to the arrangement of the crown beam, and the construction ramp can be stably put into use.
For ease of understanding, it is emphasized in the present embodiment that the longitudinal clamping and unloading unit 31 and the transverse clamping and unloading unit 32 are disposed below the middle stage mating plate 30.
The area of the uniform plate 23 is obviously larger than that of the mounting frame 21, so that the uniform plate cannot sink into earthwork, but is positioned on the surface of the earthwork to support the whole supporting structure.
Because the annular crown beam has the structures such as the supporting plate A and the sector opening B, the structure needs to have pertinence when the crown beam is provided with the structures for dispersing force, the supporting plate A needs to be avoided and the ring-shaped crown beam is attached to the surrounding areas of the supporting plate A and the sector opening B, and the longitudinal clamping force-unloading unit 31 and the transverse clamping force-unloading unit 32 of the invention need to be kept away and attached, specifically:
in the process of setting the longitudinal clamping and unloading unit 31, the longitudinal clamping and unloading unit 31 comprises an outer side unloading unit 31a and an inner side unloading unit 31b, the outer side unloading unit 31a is clamped on the crown beam, the inner side unloading unit 31b is clamped between the two supporting plates a, because the longitudinal clamping and unloading unit 31 is positioned between the two supporting plates a, in fact, the more points where the longitudinal clamping and unloading unit 31 can attach are more, the better the unloading effect is, the less damage to the crown Liang Shandian is caused, the longitudinal clamping and unloading unit 31 adopts a three-point clamping mode, the outer side unloading unit 31a is clamped on the crown beam, the inner side unloading unit 31b is clamped on the two supporting plates a of the crown beam, the two groups of longitudinal clamping and unloading units 31 are arranged between the two supporting plates a, namely, the six-point supporting mode distributes torsion and pressure borne by the two supporting plates 22 to the supporting plates a of the crown beam and the supporting plates a of the crown beam, the single point Liang Posui is also caused by the fact that the whole crown beam is uniformly stressed, and the single point Liang Posui is not easy to deform.
In fact, although the outer force-unloading unit 31a and the inner force-unloading unit 31b extend in different directions, the two force-unloading units are partially similar, specifically, the outer force-unloading unit 31a includes an extension plate 311 fixed on the supporting upright 22 and attached to the top surface of the crown beam, a side attaching plate 312 integrally formed at the bottom of the extension plate 311 and pressed against the inner side wall of the crown beam, the extension plate 311 is pressed against the upper top surface of the crown beam, and the force applied by the supporting upright 22 is guided to the crown beam along the T-shaped structure by the T-shaped structure formed by the extension plate 311 and the side attaching plate 312, so that the force is uniformly dispersed from the two surfaces, and the load gathering point is reduced;
in the installation process of the T-shaped structure formed by the extension plate 311 and the side attaching plate 312, if only a simple welding operation is adopted, the installation process is obviously inapplicable in the process of disassembling and rapidly transferring to the foundation pit group, for this purpose, an inner tangential surface 221 is arranged at the position of the support upright 22 corresponding to the middle section matching plate 30, one end of the extension plate 311, which is close to the support upright 22, is attached to the bottom of the inner tangential surface 221, the extension plate 311 is fixed on the inner tangential surface 221 through a locking bolt 313, the inner tangential surface 221 is further cut out in the support upright 22, the extension plate 311 is additionally arranged into an L-shaped structure, and the extension plate 311 is locked to the inner tangential surface 221 through the locking bolt 313, so that the longitudinal clamping force unloading unit 31 can realize the detachable effect while the unloading area is not influenced, and the installation and rapid transferring process can be more flexible.
Because the positions of the outer side force-unloading unit 31a and the inner side force-unloading unit 31b are different, the outer side force-unloading unit 31a is in direct contact with the crown beam relative to the inner side force-unloading unit 31b, so that the outer side force-unloading unit 31a can be extended to the outer side of the crown beam to form multistage fixation, the longitudinal clamping force-unloading unit 31 further comprises a lower attaching plate 314 locked at the bottom of the side attaching plate 312 and parallel to the extension plate 311, a U-shaped buckle plate 315 sleeved on the outer sides of the side attaching plate 312 and the lower attaching plate 314, and connecting pieces 316 inserted on two sides of the U-shaped buckle plate 315 and locked in the side attaching plate 312 and the lower attaching plate 314, the U-shaped buckle plate 315 is pressed on the outer sides of the crown beam, the lower attaching plate 314, the U-shaped buckle plate 315 and the connecting pieces 316 are further arranged on the original foundation, the lower attaching plate 314 is connected to the outer side of the crown beam, the side attaching plate 312 and the lower attaching plate 314 are clamped, a contact surface is formed on the outer side of the crown beam, and the two sides of the crown beam are still firmly attached, and the four sides 31 are formed, at least two sides of the force-unloading unit 31 are still firmly transferred, and the force-unloading unit is still firm, and the space is formed, and the space is at least is limited, and the two sides of the force-unloading unit is transferred.
Compared with the complex space environment of the longitudinal clamping and unloading unit 31, the installation environment of the transverse clamping and unloading unit 32 is free, and because the area of the fan-shaped opening B is fixed, the transverse clamping and unloading unit 32 comprises two clamping seats 321 hinged on the middle section matching plate 30, the clamping seats 321 are of U-shaped structures, openings of the clamping seats 321 are clamped on the inner side surface of the fan-shaped opening B, the transverse clamping and unloading unit 32 is two symmetrically arranged clamping seats 321, and the two symmetrically arranged clamping seats 321 are directly clamped on the inner side surface of the fan-shaped opening B, namely the inner side surface of the supporting plate A in a clamping mode.
However, because the crown beam is a reinforced concrete structure that cement was pour and form on the reinforcing bar, if adopt the nailing mode to fix the clamp seat 321 on the crown beam, though can guarantee fixed intensity, broken the intensity of crown beam in the intangible, also inconvenient quick transportation is used simultaneously, to this, horizontal clamping unloads power unit 32 still including setting up two clamp seat 321 seals one side's flaring structure 322, flaring structure 322 includes the butt two arc shell fragment 3221 between the clamp seat 321, set up the through-hole in arc shell fragment 3221 middle part runs through the through-hole and locks T type round pin 3222 on the support pole setting 22, T type round pin 3222's top is along setting up with clamp seat 321's outward flange interval, and this embodiment further sets up flaring structure 322 between two clamp seats 321, and through the arc shell fragment 1 on the flaring structure 322 with two clamp seats 321 outwards expands, makes it can be tightly by being fixed on the medial surface of crown beam, simultaneously for middle part no support shell fragment 321 has the support T type round pin 3222 directly to displace, and the support T type round pin 3222 is directly connected with the support pole setting 3222, wherein, and the T type round pin 3222 is avoided being connected with the arc type round pin 3222 directly, and the end is not had the support of the T type round pin 3222.
After the pressure is divided by the contact between the longitudinal clamping and unloading unit 31 and the transverse clamping and unloading unit 32, a vibration absorber 332 is further arranged at the bottom of the whole middle section matching plate 30, specifically, the middle section matching plate 30 further comprises a pressure dividing plate 33 locked at the bottoms of the longitudinal clamping and unloading unit 31 and the transverse clamping and unloading unit 32, the pressure dividing plate 33 comprises a plurality of mounting holes 331 corresponding to the supporting upright rod 22, the vibration absorbers 332 sleeved on the supporting upright rod 22 and respectively attached to the bottoms of the longitudinal clamping and unloading unit 31 and the transverse clamping and unloading unit 32, and the vibration absorbers 332 and the mounting holes 331 are arranged at intervals, wherein the vibration absorbers 332 are particle damping vibration absorbers, and can disperse part of the force still transmitted downwards after the unloading of the longitudinal clamping and unloading unit 31 and the transverse clamping and unloading unit 32 into the atmosphere through vibration of particle damping, so that the phenomenon that the vibration amplitude of the lower half section of the supporting upright rod 22 is overlarge can be avoided, and in order to avoid the vibration absorbers 332 affecting the pressure dividing plate 33, a certain gap is arranged between the vibration absorbers 332 and the mounting holes 331, so that energy can be dispersed into the air.
At the lower end position of the crown beam, a certain number of reinforcing rods can be arranged because the position of the crown beam is avoided, so the embodiment further comprises an external reinforcing member, the external reinforcing member is a plurality of X-shaped connecting frames 40 welded on the outer side of the supporting upright rod 22, the top of each X-shaped connecting frame 40 is welded at the bottom of the pressure dividing plate 33, the bottom of each X-shaped connecting frame 40 is welded on the equal spreading plate 23, and the original single-point connection of the supporting upright rod 22 and the equal spreading plate 23 is dispersed into three-point connection, so that the lower end position of the supporting upright rod 22 is in a dispersed and fixed state, and the lowest end position of the supporting upright rod 22 is not easy to bend and deform due to the mode of a small truss structure.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, and various modifications and variations may be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
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| CN202311011291.XA CN116717112B (en) | 2023-08-11 | 2023-08-11 | A construction ramp support auxiliary structure based on foundation pit crown beams |
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| CN202311011291.XA CN116717112B (en) | 2023-08-11 | 2023-08-11 | A construction ramp support auxiliary structure based on foundation pit crown beams |
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| CN116717112A (en) | 2023-09-08 |
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