CN116516987A - Collapse-preventing support piece for deep foundation pit excavation and support method using support piece - Google Patents
Collapse-preventing support piece for deep foundation pit excavation and support method using support piece Download PDFInfo
- Publication number
- CN116516987A CN116516987A CN202310711467.6A CN202310711467A CN116516987A CN 116516987 A CN116516987 A CN 116516987A CN 202310711467 A CN202310711467 A CN 202310711467A CN 116516987 A CN116516987 A CN 116516987A
- Authority
- CN
- China
- Prior art keywords
- foundation pit
- deep foundation
- piece
- side wall
- support
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000009412 basement excavation Methods 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title claims abstract description 10
- 239000002689 soil Substances 0.000 claims abstract description 40
- 239000002245 particle Substances 0.000 claims abstract description 19
- 230000001681 protective effect Effects 0.000 claims description 46
- 229910000831 Steel Inorganic materials 0.000 claims description 28
- 239000010959 steel Substances 0.000 claims description 28
- 230000005540 biological transmission Effects 0.000 claims description 17
- 230000002265 prevention Effects 0.000 claims description 11
- 238000010276 construction Methods 0.000 claims description 7
- 238000004062 sedimentation Methods 0.000 claims description 7
- 238000005381 potential energy Methods 0.000 claims description 5
- 238000005096 rolling process Methods 0.000 abstract description 4
- 230000008093 supporting effect Effects 0.000 description 17
- 239000008187 granular material Substances 0.000 description 10
- 238000004080 punching Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 3
- 241000447495 Equulites leuciscus Species 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 239000011150 reinforced concrete Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002633 protecting effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Classifications
-
- 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
-
- 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
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
- Y02A10/23—Dune restoration or creation; Cliff stabilisation
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
Abstract
The invention discloses a deep foundation pit excavation collapse-preventing support piece and a support method using the same, and relates to the field of deep foundation pit support. The invention solves the problems that the existing foundation pit support can only strengthen the support of the foundation pit side slope, but can not prevent the edge position of the upper end of the foundation pit from rolling off soil particles along the side slope, and constructors in the foundation pit are hit to cause safety accidents.
Description
Technical Field
The invention relates to the technical field of deep foundation pit supports, in particular to a deep foundation pit excavation collapse-preventing support and a support method using the same.
Background
The foundation pit is a soil pit excavated at a foundation design position according to the elevation of a substrate and the plane size of the foundation, and the foundation pit support is used for guaranteeing the safety of underground structure construction and the surrounding environment of the foundation pit, adopting supporting, reinforcing and protecting measures for the side wall of the foundation pit and the surrounding environment, aiming at deep foundation pit support, pouring a plurality of support piles in the vertical direction at the pit edge of the foundation pit in the prior art, and pouring a crown beam at the upper ends of the plurality of support piles so as to prevent overlarge deformation of surrounding soil caused by excavation and safety accidents of landslide and collapse.
For deep foundation pit, the foundation pit depth is deeper, then the side slope roll off earth granule is comparatively common, there is great potential safety hazard, and current foundation pit support can only strengthen the support of foundation pit side slope, but can not prevent the foundation pit upper end edge position to roll off earth granule along the side slope, smash the constructor who locates in the foundation pit, causes the incident, so designed a deep foundation pit excavation collapse prevention support piece and use this support method of support piece here to solve above-mentioned problem.
Disclosure of Invention
The invention aims to provide a deep foundation pit excavation collapse-preventing support and a support method using the support, so as to solve the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a deep basal pit excavates collapse-preventing support piece, includes locating base, lifting part and a plurality of protective shield who installs at the lifting part lateral wall, locating base level is fixed in deep basal pit limit position, locating base one end extends to limit border and slope junction position and with lifting part upper end hinge, the lifting part extends to deep basal pit hole bottom along the side slope soil body, protective shield lateral wall upper end level is equipped with horizontal pole one, protective shield lateral wall lower extreme level is equipped with the horizontal pole two of length shorter than horizontal pole one, horizontal pole one and horizontal pole two's tip all are fixed with the joint roller, lifting part lateral wall has seted up a plurality of inverted L type joint mouth, and lifting part lateral wall has seted up the slip mouth that matches with inverted L type joint mouth intercommunication, the joint roller of horizontal pole one tip is from the horizontal promotion of inverted L type joint mouth opening, slides down to the bottom of inverted L type joint mouth again in the corner, the joint roller of horizontal pole two tip is from the horizontal promotion of inverted L type joint mouth to the lower extreme, the horizontal pole two is realized in the lifting part slip mouth to the side wall from the inverted L type joint mouth to the lower end, and is installed the protective shield.
A bearing gap is reserved between the upper end face of the protective baffle and the side wall of the lifting piece, the bottom end of the protective baffle is propped against the side wall of the lifting piece, the protective baffle is obliquely arranged on the side wall of the side of the lifting piece, and the gap between the protective baffle and the lifting piece is used for bearing soil particles falling off a side slope of a deep foundation pit.
After the earth granule that rolls falls on the protection baffle, the protection baffle has around the trend of keeping away from the one side upset of protection baffle with the horizontal pole is two way, and horizontal pole one and the joint roller height that corresponds do not change, consequently, take place relative slip in through roller and the guide way that corresponds through the elastic connection board to the level difference value when compensating the protection baffle upset plays the impact force that the buffering earth granule produced when pounding simultaneously.
In a further embodiment, the lifting member is a steel plate.
In a further embodiment, the hoisting piece is a plurality of steel plates, and a connecting block is hinged between two adjacent steel plates.
In a further embodiment, a sedimentation type positioning hole is formed in the side wall of the hoisting piece, and a positioning rod is inserted into the sedimentation type positioning hole.
The locating device is characterized in that a transmission groove is formed in one end of the locating rod, a circular arc-shaped opening communicated with the transmission groove is formed in the other end of the locating rod, a plurality of supporting blocks are fixed at one end, close to the circular arc-shaped opening, of the inner wall of the transmission groove, inclined planes are formed in the side walls, close to the axis of the locating rod, of the supporting blocks, and a punch rod is inserted into the groove of the transmission groove in a sliding mode.
The punch rod is inserted from the notch of the transmission groove, then the punch rod is rammed by using the knocking equipment, the punch rod can axially feed along the transmission groove and continuously slide along the inclined planes of the plurality of expansion blocks, and the plurality of expansion blocks can be separated along with continuous feeding of the punch rod, so that the side walls of the two sides of the circular arc-shaped opening of the positioning rod are expanded, the stability of the positioning rod embedded into the soil body can be enhanced, and the stability of the hoisting piece is enhanced.
In a further embodiment, the positioning base is provided with a plurality of mounting holes, and the mounting holes are inserted with inserted steel bars which can be inserted into the soil body at the pit edge of the deep foundation pit.
In a further embodiment, the mounting hole axial direction is in a vertical direction.
In a further embodiment, the axial directions of the mounting holes on the left and right sides of the middle position of the positioning base are respectively distributed obliquely to the left lower side and the right lower side, and the oblique angle is in the range of 0-90 degrees.
In a further embodiment, the axial directions of the mounting holes on the left and right sides of the middle position of the positioning base are respectively distributed obliquely to the right lower side and the left lower side, and the oblique angle is in the range of 0-90 degrees.
In a further embodiment, an elastic connecting plate is hinged to one end of the first cross rod, which is far away from the clamping roller, a rectangular through hole is formed in the position, close to the upper end, of the side wall of the protective baffle, guide grooves are formed in the side walls of the two sides in the rectangular through hole, the elastic connecting plate is located in the rectangular through hole, and roll shafts are rotatably arranged in the corner positions of the side walls of the two sides of the elastic connecting plate and are in sliding clamping connection with the corresponding guide grooves;
and one end of the second cross rod, which is far away from the clamping roller, is hinged with the bottom end of the side wall of the protective baffle.
After the earth granule that rolls falls on the protective baffle, the protective baffle has around the trend of keeping away from protective baffle's one side upset with the horizontal pole is two way, and horizontal pole one and the joint roller height that corresponds do not change, consequently, take place relative slip in through roller and the guide way that corresponds through the elastic connection board to the level difference value when compensating protective baffle upset plays the impact force that the earth granule produced when pounding simultaneously.
Preferably, the supporting method based on the deep foundation pit excavation collapse prevention supporting piece using the supporting piece comprises the following steps:
horizontally fixing a foundation pit depth positioning base at the pit edge position of a deep foundation pit, wherein one end of the positioning base extends to the junction position of the pit edge and a side slope and is hinged with the upper end of a hoisting piece, and the hoisting piece extends to the pit bottom of the deep foundation pit along the soil body of the side slope;
in addition, the protective baffle is obliquely arranged on the side wall of the side of the lifting piece, and the gap between the protective baffle and the lifting piece is used for bearing soil particles falling off from the side slope of the deep foundation pit, so that the soil particles are prevented from directly falling off from the side slope to generate larger kinetic potential energy to bring potential safety hazards to construction workers.
Compared with the prior art, the invention has the beneficial effects that:
the invention relates to a deep foundation pit excavation collapse-preventing support piece and a support method using the same, which solve the problems that the existing foundation pit support can only strengthen the support of a foundation pit side slope, but can not prevent soil particles from rolling along the side slope at the edge position of the upper end of the foundation pit, smash constructors positioned in the foundation pit and cause safety accidents by hoisting a plurality of hoisting pieces on the foundation pit side slope and arranging soil particles capable of bearing rolling from the top of the side slope on the hoisting pieces.
Drawings
FIG. 1 is a schematic diagram of the main structure of the present invention;
FIG. 2 is a schematic view of another improved structure of the positioning base and the lifting member of the present invention;
FIG. 3 is a cross-sectional view of a detent lever structure of the present invention;
FIG. 4 is a schematic view of the positioning base and plug steel bar mounting structure of the present invention;
FIG. 5 is a schematic view of another installation structure of the positioning base and the plug steel of the present invention;
FIG. 6 is a schematic view of a part of the structure of the lifting member of the present invention;
FIG. 7 is a schematic view of a guard shield according to the present invention;
FIG. 8 is a schematic view of the structure of the clamping roller, the first cross bar and the elastic connecting plate according to the present invention;
FIG. 9 is a partial cross-sectional view of a guard shield of the present invention;
fig. 10 is a side view of a partial structure of a second cross bar and a protective baffle according to the present invention.
In the figure: 1. positioning a base; 2. inserting steel drills; 3. hoisting the piece; 31. an inverted card interface; 32. matching the sliding port; 4. a first cross bar; 5. a protective baffle; 51. a guide groove; 6. a positioning rod; 7. a connecting block; 71. a transmission groove; 72. a plunger; 73. a spreader block; 8. a clamping roller; 9. a second cross bar; 10. an elastic connecting plate; 101. and (3) a roll shaft.
Detailed Description
The following description will clearly and fully describe the technical solutions of the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
Referring to fig. 1-10, the present embodiment provides a supporting member for preventing collapse of a deep foundation pit during excavation and a supporting method using the same, which includes a positioning base 1, a lifting member 3 and a plurality of protective baffles 5 mounted on the side wall of the lifting member 3, wherein after the deep foundation pit is excavated, a plurality of reinforced concrete supporting piles are cast at the edge of the foundation pit except before the foundation pit is opened in the prior art, and a plurality of reinforced concrete crown beams are cast on the plurality of supporting piles, so that the plurality of supporting piles are connected together for performing a better supporting function on the side slope of the deep foundation pit, after the deep pit is excavated, construction workers need to continue to work in the foundation pit, so that soil particles at the top of the side slope are unlikely to fall down, the soil particles fall to the inner bottom end surface of the pit base from the top of the side slope, and gravitational potential energy is converted into dynamic potential energy, and once the soil particles fall on the construction workers, a great potential safety hazard exists.
Therefore, the foundation pit depth positioning base 1 is horizontally fixed at the pit edge position of the deep foundation pit, one end of the positioning base 1 extends to the junction position of the edge of the pit edge and the side slope and is hinged with the upper end of the lifting piece 3, the lifting piece 3 extends to the pit bottom of the deep foundation pit along the soil body of the side slope, a plurality of lifting pieces 3 are arranged and distributed side by side, the top of the lifting piece 3 is hinged with the end of the positioning base 1, the lifting piece 3 can be turned around the hinge position to be attached to the side slope, the whole length of the lifting piece 3 is far longer than the depth of the pit base, a limit groove for burying the bottom end of the lifting piece 3 is continuously excavated at the pit bottom slope position, and the part of the lifting piece 3 longer than the pit base depth can be poured in the limit groove by adopting concrete, so that the protection piece for preventing the side slope collapse and the rolling of soil particles at the top of the side slope is formed together with the side slope support pile, and the construction safety is improved.
As shown in fig. 1, the hoisting piece 3 is a steel plate, and the steel plate penetrates into the pit base end from the top of the side slope at one time, so that the supporting effect on the soil body of the side slope is enhanced.
As shown in FIG. 2, the lifting part 3 is a plurality of steel plates, the connecting blocks 7 are hinged between two adjacent steel plates, the plurality of steel plates are hinged together by adopting the plurality of connecting blocks 7, the purpose of the arrangement is that the steel plates at corresponding positions rotate around the positions hinged with the connecting blocks 7 in the place where the slopes are uneven, the lamination of other steel plates and the slopes is not influenced, the problem that gaps exist between the lifting part 3 and the slopes due to the influence of the protrusion of the local slope positions of the whole lifting part 3, the lamination strength of the slopes is influenced, and the poor supporting strength of the slopes is caused is avoided.
For deep foundation pit, the foundation pit depth is deeper, and then the side slope roll off earth granule is comparatively common, exists great potential safety hazard, and current foundation pit support can only strengthen the support of foundation pit side slope, and can not prevent that foundation pit upper end edge position from roll off earth granule along the side slope, smash the constructor that is located in the foundation pit, causes the incident.
The upper end of the side wall of the protective baffle 5 is horizontally provided with a first cross rod 4, the lower end of the side wall of the protective baffle 5 is horizontally provided with a second cross rod 9 with the length shorter than that of the first cross rod 4, the ends of the first cross rod 4 and the second cross rod 9 are respectively fixedly provided with a clamping roller 8, the side wall of the lifting piece 3 is provided with a plurality of inverted L-shaped clamping ports, the side wall of the lifting piece 3 is provided with a matching sliding port 32 communicated with the inverted L-shaped clamping ports 31, as shown in fig. 1, 2, 6 and 7, the clamping roller 8 at the end of the first cross rod 4 horizontally advances from the opening of the inverted L-shaped clamping port to the corner and then slides downwards to the bottom end of the inverted L-shaped clamping port, the clamping roller 8 at the end of the second cross rod 9 horizontally advances from the opening of the inverted L-shaped clamping port to the corner, and the second cross rod 9 slides from the upper end to the lower end in the matching sliding port 32, so that the protective baffle 5 can be detachably mounted on the side wall of the lifting piece 3 is realized.
As shown in fig. 1 and 2, the length of the first cross rod 4 is longer than that of the second cross rod 9, so that a bearing gap is reserved between the upper end surface of the protective baffle 5 and the side wall of the lifting piece 3, the bottom end of the protective baffle 5 is propped against the side wall of the lifting piece 3, the protective baffle 5 is obliquely arranged on the side wall of the lifting piece 3, and the gap between the protective baffle 5 and the lifting piece 3 is used for bearing soil particles falling on a side slope of a deep foundation pit, so that the soil particles are prevented from directly falling from the side slope to generate larger dynamic potential energy to bring potential safety hazards to construction workers.
In addition, after the soil particles that roll off on the protective baffle 5, a certain impact force can be generated on the protective baffle 5, so that the protective baffle 5 is easy to be broken and bent, the bearing surface of the soil particles that roll off is influenced by the whole protective baffle 5, and the effective protection of the protective baffle 5 is influenced.
As shown in fig. 7, fig. 8, fig. 9 and fig. 10, the elastic connection plate 10 is hinged at one end of the first cross rod 4 far away from the clamping roller 8, the rectangular through hole is formed in the position, close to the upper end, of the side wall of the protective baffle 5, the guide grooves 51 are formed in the side walls of the two sides of the rectangular through hole, the elastic connection plate 10 is located in the rectangular through hole, the roller shafts 101 are rotatably arranged at the corner positions of the two side walls of the elastic connection plate 10, the roller shafts 101 are slidably clamped in the corresponding guide grooves 51, one end of the second cross rod 9 far away from the clamping roller 8 is hinged with the bottom end of the side wall of the protective baffle 5, and after the rolled soil particles fall on the protective baffle 5, the protective baffle 5 has a tendency of overturning around the second cross rod 9 towards one side far away from the protective baffle 5, and the height of the first cross rod 4 and the corresponding clamping roller 8 do not change, so that the elastic connection plate 10 slides relatively with the corresponding guide grooves 51 through the roller shafts 101 to compensate for the horizontal difference value when the protective baffle 5 is overturned, and the impact force generated when the soil particles are buffered.
Through hoist and mount a plurality of lifting parts 3 at deep foundation ditch side slope to set up on lifting part 3 and to accept the guard flap 5 that rolls earth granule from the side slope top, solved current foundation ditch support and can only strengthen the support of foundation ditch side slope, but can not prevent that foundation ditch upper end edge position from rolls earth granule along the side slope, smash the constructor that is located the foundation ditch, initiate the problem of incident.
In addition, a sedimentation type locating hole is formed in the side wall of the hoisting piece 3, a locating rod 6 is inserted into the sedimentation type locating hole, and after the hoisting piece 3 is lowered along a side slope as shown in fig. 1-2, the locating rod 6 is tamped into the sedimentation type locating hole, so that the stability of the hoisting piece 3 on the side slope is enhanced.
The transmission groove 71 is arranged at one end of the positioning rod 6, the arc-shaped opening communicated with the inside of the transmission groove 71 is arranged at the other end of the positioning rod 6, a plurality of supporting blocks 73 are fixed at one end, close to the arc-shaped opening, of the inner wall of the transmission groove 71, inclined surfaces are arranged on the side walls, close to the axis of the positioning rod 6, of the plurality of supporting blocks 73, the punching rod 72 is inserted into the groove openings of the transmission groove 71 in a sliding mode, after the positioning rod 6 is completely rammed into the slope body, in order to prevent the positioning rod 6 from shaking and separating from the slope body, the punching rod 72 is inserted into the groove openings of the transmission groove 71, then ramming equipment is utilized to tamp the punching rod 72, the punching rod 72 can axially feed along the transmission groove 71, the inclined surfaces of the plurality of supporting blocks 73 continue to slide, the side walls on two sides of the arc-shaped opening of the positioning rod 6 can be separated along with continuous feeding of the punching rod 72, so that stability of the positioning rod 6 embedded into the slope body can be enhanced, and stability of the lifting piece 3 can be enhanced.
And, set up a plurality of mounting holes on the location base 1, the downthehole grafting drill steel 2 that has inserted in can embedding deep basal pit hole limit soil body, location base 1 sets up behind foundation ditch upper end border position, utilizes grafting drill steel 2 to pass the mounting hole to tamper into the soil body, fix a position location base 1, thereby ensure that hoist and mount piece 3 is stable on the side slope.
The axial direction of the mounting hole shown in fig. 1 and 2 is in the vertical direction, and the plugging steel rod 2 passes through the mounting hole in the relative vertical direction and then is tamped into the soil body, so that the position of the positioning base 1 can be positioned.
Besides the fact that the inserting steel bars 2 are vertically rammed into the soil relatively, the axial directions of the mounting holes on the left side and the right side of the middle position of the positioning base 1 can be respectively distributed obliquely to the lower left side and the lower right side, and the inclination angle is in the range of 0-90 degrees, as shown in fig. 4, the inserting steel bars 2 in the mounting holes on the two sides are embedded into the soil in a similar inverted V-shaped structure, when the positioning base 1 is rocked due to linkage of the lifting piece 3, the inclined side walls of the inserting steel bars 2 are abutted against the soil, so that the inserting steel bars 2 cannot be easily pulled up from the soil, and the stability of the positioning base 1 and the lifting piece 3 is enhanced.
Or the axial directions of the mounting holes at the left side and the right side of the middle position of the positioning base 1 are respectively distributed obliquely to the lower right side and the lower left side, and the inclination angle is in the range of 0-90 degrees, as shown in fig. 5, the inserted steel bars 2 in the mounting holes at the two sides are embedded into the soil body in a V-shaped structure, when the positioning base 1 is subjected to linkage of the lifting piece 3 and shakes, the side walls of the inclined inserted steel bars 2 are abutted against the soil body, so that the inserted steel bars 2 cannot be easily pulled up from the soil body, and the stability of the positioning base 1 and the lifting piece 3 is enhanced.
In summary, by the above three types of installation and positioning bases 1 and other modes equivalent to the above installation and positioning bases 1, the stability of the positioning base 1 and the hanging piece 3 can be enhanced.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The utility model provides a deep basal pit excavates prevents collapse support piece, includes locating base (1), hoist and mount piece (3) and a plurality of protective shield (5) of installing at hoist and mount piece (3) lateral wall, its characterized in that: the positioning base (1) is horizontally fixed at the pit edge position of a deep foundation pit, one end of the positioning base (1) extends to the junction position of the edge of the pit edge and a side slope and is hinged with the upper end of a lifting piece (3), the lifting piece (3) extends to the pit bottom of the deep foundation pit along a soil body of the side slope, a cross rod I (4) is horizontally arranged at the upper end of the side wall of the protective baffle (5), a cross rod II (9) with the length shorter than that of the cross rod I (4) is horizontally arranged at the lower end of the side wall of the protective baffle (5), clamping rollers (8) are respectively fixed at the ends of the cross rod I (4) and the cross rod II (9), a plurality of inverted L-shaped clamping ports are formed in the side wall of the lifting piece (3), a matching sliding port (32) communicated with the inverted L-shaped clamping ports (31) is formed in the side wall of the lifting piece (3), the clamping rollers (8) at the end of the cross rod I (4) are horizontally pushed from the opening of the inverted L-shaped clamping ports, and then slide downwards to the bottom end of the inverted L-shaped clamping ports, the cross rod I (4) is slid from the upper end of the matching port (32) to the lower end of the inverted L-shaped clamping ports, and the end of the two ends slide from the upper end of the inverted L-shaped clamping ports (8 to the lower end of the inverted L-shaped clamping ports are pushed upwards;
a bearing gap is reserved between the upper end face of the protective baffle (5) and the side wall of the lifting piece (3), the bottom end of the protective baffle (5) is propped against the side wall of the lifting piece (3), the protective baffle (5) is obliquely arranged on the side wall of the side of the lifting piece (3), and the gap between the protective baffle (5) and the lifting piece (3) is used for bearing soil particles falling from a side slope of a deep foundation pit.
2. The deep foundation pit excavation collapse prevention support of claim 1, wherein: the hoisting piece (3) is a steel plate.
3. The deep foundation pit excavation collapse prevention support of claim 1, wherein: the hoisting piece (3) is a plurality of steel plates, and a connecting block (7) is hinged between two adjacent steel plates.
4. A deep foundation pit excavation collapse prevention support as claimed in claim 2 or 3, wherein: a sedimentation type positioning hole is formed in the side wall of the hoisting piece (3), and a positioning rod (6) is inserted into the sedimentation type positioning hole;
the utility model discloses a locating lever, including locating lever (6), transmission groove (71) have been seted up to locating lever (6) one end, the other end of locating lever (6) has been seted up with the convex opening of intercommunication in transmission groove (71), transmission groove (71) inner wall is close to convex open-ended one end and is fixed with a plurality of opening piece (73), and a plurality of side walls that open-ended piece (73) are close to locating lever (6) axis are equipped with the inclined plane, transmission groove (71) internal slot slip has inserted punch pin (72).
5. The deep foundation pit excavation collapse prevention support of claim 1, wherein: the positioning base (1) is provided with a plurality of mounting holes, and the mounting holes are internally inserted with inserted steel bars (2) which can be embedded into the soil body at the pit edge of the deep foundation pit.
6. The deep foundation pit excavation collapse prevention support of claim 5, wherein: the axial direction of the mounting hole is in the vertical direction.
7. The deep foundation pit excavation collapse prevention support of claim 5, wherein: the axial directions of the mounting holes positioned at the left side and the right side of the middle position of the positioning base (1) are respectively distributed obliquely to the lower left side and the lower right side, and the inclination angle is in the range of 0-90 degrees.
8. The deep foundation pit excavation collapse prevention support of claim 5, wherein: the axial directions of the mounting holes positioned at the left side and the right side of the middle position of the positioning base (1) are respectively distributed obliquely to the lower right side and the lower left side, and the inclination angle is in the range of 0-90 degrees.
9. The deep foundation pit excavation collapse prevention support of claim 1, wherein: one end of the first cross rod (4) far away from the clamping roller (8) is hinged with an elastic connecting plate (10), a rectangular through hole is formed in the position, close to the upper end, of the side wall of the protective baffle (5), guide grooves (51) are formed in the side walls of the two sides in the rectangular through hole, the elastic connecting plate (10) is located in the rectangular through hole, roller shafts (101) are rotatably arranged at the corner positions of the side walls of the two sides of the elastic connecting plate (10), and the roller shafts (101) are in sliding clamping connection with the corresponding guide grooves (51);
one end of the second cross rod (9) far away from the clamping roller (8) is hinged with the bottom end of the side wall of the protective baffle (5).
10. The support method for the deep foundation pit excavation collapse prevention support using the support is characterized by comprising the following steps of:
the foundation pit depth positioning base (1) is horizontally fixed at the pit edge position of the deep foundation pit, one end of the positioning base (1) extends to the junction position of the edge of the pit edge and the side slope and is hinged with the upper end of the lifting piece (3), and the lifting piece (3) extends to the pit bottom of the deep foundation pit along the soil body of the side slope;
in addition, the protection baffle (5) is obliquely arranged on the side wall of the side of the lifting piece (3), and the gap between the protection baffle (5) and the lifting piece (3) is used for bearing soil particles falling off the side slope of the deep foundation pit, so that the soil particles are prevented from directly falling off the side slope to generate larger kinetic potential energy to bring potential safety hazards to construction workers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310711467.6A CN116516987A (en) | 2023-06-15 | 2023-06-15 | Collapse-preventing support piece for deep foundation pit excavation and support method using support piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310711467.6A CN116516987A (en) | 2023-06-15 | 2023-06-15 | Collapse-preventing support piece for deep foundation pit excavation and support method using support piece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116516987A true CN116516987A (en) | 2023-08-01 |
Family
ID=87396093
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310711467.6A Withdrawn CN116516987A (en) | 2023-06-15 | 2023-06-15 | Collapse-preventing support piece for deep foundation pit excavation and support method using support piece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116516987A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118148159A (en) * | 2024-05-13 | 2024-06-07 | 甘肃省建设设计咨询集团有限公司 | Rock-soil foundation pit supporting device |
| CN118223500A (en) * | 2024-05-27 | 2024-06-21 | 山东源毅豪建筑工程有限公司 | Earth and stone square support device |
-
2023
- 2023-06-15 CN CN202310711467.6A patent/CN116516987A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118148159A (en) * | 2024-05-13 | 2024-06-07 | 甘肃省建设设计咨询集团有限公司 | Rock-soil foundation pit supporting device |
| CN118223500A (en) * | 2024-05-27 | 2024-06-21 | 山东源毅豪建筑工程有限公司 | Earth and stone square support device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN116516987A (en) | Collapse-preventing support piece for deep foundation pit excavation and support method using support piece | |
| CN102587388B (en) | PRM foundation pit supporting method | |
| CN106087996B (en) | Manual digging pile construction method based on self leveling backpressure device | |
| CN215406059U (en) | A guider that is used for constructing leading formula batter pile of excavation supporting system | |
| CN215594060U (en) | A ground connection wall guide wall structure adjacent to pipelines in a narrow space | |
| CN110409480A (en) | A kind of construction method on the photovoltaic bracket basis in gravel place | |
| CN212561539U (en) | An arch retaining plate foundation pit support structure | |
| CN214657074U (en) | Civil engineering is safety support structure for excavation supporting | |
| CN213476908U (en) | Construction engineering foundation pit support wide in application range | |
| CN211200401U (en) | Supporting device for geotechnical engineering | |
| CN215562673U (en) | Deep foundation pit slope supporting structure | |
| CN219772994U (en) | Trench supporting construction convenient to municipal administration pipeline installation | |
| CN220365011U (en) | Deep foundation pit supporting retaining wall | |
| CN221989340U (en) | An assembled support structure in the process of pipe network construction | |
| CN108661056B (en) | Pile plate up-and-down combined supporting structure and construction process | |
| JP2958282B2 (en) | Device for correcting uneven land of unequal settlement by using soil pile consolidation method and method of correcting uneven land using the device | |
| CN222252143U (en) | A slide rail steel box support system | |
| CN211256954U (en) | A steel pipe pile for subway grouting | |
| CN221193362U (en) | Supporting structure for foundation pit engineering construction | |
| CN218911449U (en) | A prefabricated support structure for deep foundation pit support | |
| CN222730532U (en) | Pile casing burying mechanism for rotary digging filling pile | |
| CN106194229B (en) | One kind is based on the improved stent directional movement structure of stent bottom plate and method | |
| CN114775635B (en) | Building foundation pit maintaining plate | |
| CN118188881A (en) | A concrete base for construction of prestressed steel cylinder concrete pipe | |
| CN215948249U (en) | Single-pile hole digging foundation structure for power transmission line |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20230801 |
|
| WW01 | Invention patent application withdrawn after publication |