CN110499793B - Tool for measuring pile bottom sediment thickness of cast-in-place pile and using method thereof - Google Patents
Tool for measuring pile bottom sediment thickness of cast-in-place pile and using method thereof Download PDFInfo
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- CN110499793B CN110499793B CN201910847908.9A CN201910847908A CN110499793B CN 110499793 B CN110499793 B CN 110499793B CN 201910847908 A CN201910847908 A CN 201910847908A CN 110499793 B CN110499793 B CN 110499793B
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- 239000013049 sediment Substances 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims description 25
- 230000005484 gravity Effects 0.000 claims abstract description 76
- 229910000831 Steel Inorganic materials 0.000 claims description 18
- 239000010959 steel Substances 0.000 claims description 18
- 238000004804 winding Methods 0.000 claims description 9
- 239000004567 concrete Substances 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 238000005259 measurement Methods 0.000 abstract description 5
- 238000012360 testing method Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract 1
- 238000005553 drilling Methods 0.000 description 5
- 230000035515 penetration Effects 0.000 description 4
- 238000011065 in-situ storage Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000009189 diving Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
Abstract
The invention relates to the technical field of building engineering tests, and discloses a tool for measuring the sediment thickness at the bottom of a cast-in-place pile, which comprises a gravity rod, a special measuring head and a connecting rope, wherein the connecting rope comprises a scale measuring rope and a pull rope, the pull rope is connected to the gravity rod, and the scale measuring rope is connected to the special measuring head; the special measuring head comprises a bottom plate, the bottom of the gravity rod is flush with the bottom of the bottom plate, the time measuring rope is equal to the pull rope, and a through hole for the gravity rod to pass through is formed in the middle of the bottom plate. The invention has the following advantages and effects: the bottom plate is arranged above the sediment, the bottom of the gravity rod is leveled with the bottom plate, the length of the scale measuring rope and the length of the pull rope are kept, and the gravity rod passes through the through hole in the middle of the bottom plate, so that the measuring position is at the same sediment point, and the measuring error is reduced; when the gravity rod sinks to the bottom of the sediment, the thickness of the sediment can be obtained by measuring the moving distance of the stay cord relative to the scale measuring cord, the measurement is more convenient and accurate, and the measurement accuracy can be improved.
Description
Technical Field
The invention relates to the technical field of building engineering tests, in particular to a tool for measuring the thickness of sediment at the bottom of a cast-in-place pile and a use method thereof.
Background
Cast-in-place piles are piles made by casting concrete or reinforced concrete into holes in place. Forming holes on site by using a spiral drilling machine, a diving drilling machine and the like, pouring concrete to form piles, and protecting walls by using slurry for preventing holes from collapsing during drilling; the mud which is prepared by injecting into sandy soil is used for drilling, the mud circulation is used for removing the earth scraps which are drilled down, and the hole is cleaned after the drilling is carried out to the required depth so as to remove the earth scraps which are sunk at the bottom of the hole, so that the sinking amount of the pile is reduced, and the influence on the bearing capacity of the pile foundation and the safety of the structure is avoided.
The thickness of the sediment at the bottom of the bored pile refers to the thickness of the sediment layer at the bottom of the hole from the end of hole cleaning to the end of concrete pouring, and the thickness of the sediment of the bored pile is usually controlled within 50mm or 100 mm.
The existing construction process is generally tested by adopting measures such as measuring end binding steel bar heads and the like when testing the sediment thickness of the cast-in-place pile, and the sediment thickness of the pile hole bottom before pouring is judged through hand feeling and experience of people.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention provides a tool for measuring the sediment thickness of the pile bottom of a cast-in-situ pile, which can rapidly and accurately measure the hole forming depth and sediment thickness of the cast-in-situ pile and realize the purpose of controlling the sediment thickness of the cast-in-situ pile within 50mm or 100 mm.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the utility model provides a measure instrument of bored concrete pile bottom sediment thickness, includes gravity stick, still includes special measuring head and connecting rope, connecting rope includes scale measuring rope and stay cord, the stay cord is connected on the gravity stick, the scale measuring rope is connected on the special measuring head; the special measuring head comprises a bottom plate, the bottom of the gravity rod is flush with the bottom of the bottom plate, the time measuring rope is equal to the pull rope, and a through hole for the gravity rod to pass through is formed in the middle of the bottom plate.
By adopting the technical scheme, the bottom plate is placed above the sediment, the scale measuring rope and the pull rope are equal in length, the bottom of the gravity rod is leveled with the bottom plate, and the gravity rod passes through the through hole in the middle of the bottom plate, so that the measuring position can be kept at the same sediment point, and the measuring error is reduced; when the gravity rod sinks to the bottom of the sediment, the thickness of the sediment can be obtained by measuring the distance between the pull rope and the scale measuring rope, the measuring result is more accurate, and the method is more convenient; on the other hand, the raw materials used in the measuring process are simple and easy to obtain, and the cost and the resources can be saved.
The invention is further provided with: the special measuring head further comprises a supporting plate connected with the bottom plate, the scale measuring rope is fixedly connected to the supporting plate, and the gravity rod is connected with the supporting plate through a connecting structure.
By adopting the technical scheme, the bottom plate is supported by the supporting plate, the scale measuring rope is connected to the supporting plate, the gravity rod can be kept connected with the supporting plate by the connecting structure, the gravity rod can be lowered simultaneously with the bottom plate, the process of putting the gravity rod again is avoided, and the operation steps are simpler; in addition, the connecting structure enables the gravity rod to move relative to the supporting plate, and the process that the gravity rod sinks to the bottom of the sediment can be realized.
The invention is further provided with: the connecting structure comprises a fixing rod, a groove and a notch, wherein the groove is formed in the supporting plate, the fixing rod is accommodated in the groove, and the pull rope is fixed in the middle of the fixing rod; one side of the groove is communicated with a chute for the sliding of the fixing rod; the notch is formed in the supporting plate and is positioned on one side of the sliding groove away from the groove, and the fixing rod can downwards penetrate through the notch.
By adopting the technical scheme, the fixing rod can be stably placed on the supporting plate through the grooves, and can slide to the notch along the sliding groove, so that the fixing rod can be separated from the supporting plate from the notch and descends relative to the supporting plate, the stability of the moving process of the fixing rod is maintained, and the error is reduced; the stay cord is fixed in the dead lever middle part, makes the gravity stick keep the center unanimous at dead lever pivoted in-process, does not influence the gravity stick and descends from the through-hole to make the measurement position be in same sediment point, reducible measurement error.
The invention is further provided with: the special measuring head further comprises supporting steel bars and a connecting plate, one ends of the supporting steel bars are fixed at the edge of the bottom plate, the other ends of the supporting steel bars are obliquely fixed on the connecting plate, the scale measuring rope is fixedly connected onto the connecting plate, and when the fixing rod is located at the notch, the upper part of the gravity rod is flush with the upper part of the connecting plate.
By adopting the technical scheme, the supporting steel bars are obliquely fixed on the bottom plate and the connecting plate, so that the function of stabilizing the supporting bottom plate is achieved; one end of the scale measuring rope is connected to the supporting plate, and the other end of the scale measuring rope is connected to the connecting plate, so that the scale measuring rope is kept in a stretching state; one end of the pull rope is fixed on the fixed rod, the other end of the pull rope is fixed on the gravity rod, and when the fixed rod corresponds to the notch, the upper part of the gravity rod is leveled with the connecting plate, so that the scale measuring rope and the pull rope are equal in length, and when the gravity rod descends, the sediment thickness can be obtained only by measuring the moving distance of the fixed rod relative to the supporting plate.
The invention is further provided with: the scale measuring rope is movably connected to the supporting plate, and the pull rope is movably connected to the fixing rod; the middle part of dead lever and backup pad are all fixed with the locating piece, be formed with around establishing the groove on the lateral wall of locating piece, the locating piece is formed with the through-hole with around establishing the intercommunication on the lateral wall in groove, scale measuring rope and stay cord can pass corresponding through-hole and around locating around establishing groove department.
Through adopting above-mentioned technical scheme, make the adjustable relative position with the backup pad of scale survey rope to make the stay cord can cooperate the adjustment of scale survey rope and synchronous regulation, be convenient for adjust the distance between coupling ring and the connecting plate, thereby when the pile bottom height of measuring is different, keep backup pad and coupling ring to be located more than ground and be in the position that constructor is convenient for operate all the time.
The invention is further provided with: the support plate and the fixed rod are provided with a guide structure for guiding the fixed rod to move; the guide structure comprises an extension plate, a guide plate and a guide groove, wherein the extension plate is fixed on the support plate and corresponds to the notch, the guide groove is formed on the side wall of the notch and extends to the side wall of the extension plate, and the guide plate is fixed on the end part of the fixing rod and is slidably arranged in the guide groove.
By adopting the technical scheme, the extension plate fixed at the notch can play a supporting and guiding role in the downward moving process of the fixing rod; the guide plate fixed on the fixing rod is slidably arranged in the guide groove to play an auxiliary guide role, so that the fixing rod is more stable in the descending process relative to the supporting plate, and the fact that the fixing rod inclines in the downward moving process to influence the measurement accuracy is avoided.
The invention is further provided with: the guide plates fixed at the end parts of the fixing rods are reversely arranged.
Through adopting above-mentioned technical scheme, the deflector of dead lever tip is reverse to the in-process that descends at the dead lever descends leads the decline process of dead lever from upper and lower both ends respectively through two reverse deflector, avoids the dead lever to take place the slope, makes measuring result more accurate.
The invention is further provided with: the extension plate is fixed through a connecting ring, and a penetrating hole for the scale measuring rope to pass through is formed on the connecting ring.
By adopting the technical scheme, the connecting rings play a role in supporting the extension plate, so that the structure of the extension plate is more stable; the penetrating holes provide space for the penetration of the scale measuring rope, so that the scale accuracy of the scale measuring rope is prevented from being influenced, and meanwhile, the scale measuring rope is supported through the connecting rings.
The invention is further provided with: the gravity bar can be one steel bar or formed by fixedly connecting two steel bar bundles; and the bottom of the gravity rod is a tip.
By adopting the technical scheme, the tip at the bottom of the gravity rod is beneficial to reducing the sinking resistance of the gravity rod, so that the gravity rod is convenient to sink to the bottom of the sediment, and the measuring result of the sediment thickness is more accurate.
The invention also discloses a use method of the tool for measuring the sediment thickness at the bottom of the cast-in-place pile, which comprises the following steps:
A. the positions of the scale measuring ropes 31 on the supporting plate 21 and the positions of the pull ropes 32 on the fixing rods 41 are adjusted to adapt to the depths of different pile bottoms and keep the supporting plate 21 and the connecting rings 6 to be always positioned above the ground and at the positions which are easy to operate by constructors;
B. holding the support plate 21 or fixing the support plate 21 on a bracket, positioning the fixing rod 41 in the groove 42, and positioning the gravity bar 1 above the through hole 241; slowly placing the bottom plate 24 into the bottom of the pile hole until the bottom plate 24 contacts sediment at the bottom of the pile hole and is stably placed above the sediment, and keeping the scale measuring rope 31 in a stretched state;
C. then holding the fixing rod 41 by hand and rotating to the notch 43 along the sliding groove 421, when the fixing rod 41 is positioned at the notch 43, the bottom of the fixing rod 41 is level with the bottom of the supporting plate 21, the bottom of the gravity rod 1 is level with the bottom of the bottom plate 24, then the fixing rod 41 passes through the notch 43 and stably descends along the extension plate 51, and the guide plate 52 is slidably arranged in the guide groove 53, so that the gravity rod 1 is balanced; the bottom of the gravity rod 1 passes through the through hole 241 and is slowly inserted into the pile bottom until the gravity rod 1 is no longer sinking;
D. the moving distance of the fixing rod 41 relative to the supporting plate 21 at this time is recorded as the thickness of the sediment to be measured.
In summary, the invention has the following beneficial effects:
1. the fixed rod is positioned on the supporting plate, supports the gravity rod and enables the gravity rod and the bottom plate to descend simultaneously, so that the process of putting the gravity rod again is avoided, and the operation steps are simpler; one end of the scale measuring rope is connected to the supporting plate, and the other end of the scale measuring rope is connected to the connecting plate, so that the scale measuring rope is kept in a stretching state; one end of the pull rope is fixed on the fixed rod, the other end of the pull rope is fixed on the gravity rod, and the upper part of the gravity rod is leveled with the connecting plate, so that the scale measuring rope and the pull rope are equal in length, and when the gravity rod descends, the thickness of sediment can be obtained only by measuring the moving distance of the fixed rod relative to the supporting plate;
2. the groove enables the fixing rod to be stably placed on the supporting plate, and the fixing rod can slide to the notch along the sliding groove, so that the fixing rod can be separated from the supporting plate from the notch and descends relative to the supporting plate, stability of the moving process of the fixing rod is maintained, and error reduction is facilitated; the pull rope is fixed in the middle of the fixed rod, so that the gravity rod keeps the center consistent in the rotation process of the fixed rod, and the gravity rod is not influenced to descend from the through hole, so that the measuring position is at the same sediment point, and the measuring error can be reduced;
3. the deflector of dead lever tip is reverse to set up to the in-process that descends at the dead lever descends through two reverse deflector respectively from upper and lower both ends to the decline process of dead lever, avoid the dead lever to take place the slope, make measuring result more accurate.
Drawings
Fig. 1 is a schematic structural view of the present embodiment;
FIG. 2 is a schematic view showing the explosion structure of the fixing rod and the support plate and the extension plate of the embodiment;
fig. 3 is a schematic cross-sectional view of the fixing rod of the present embodiment in a working state in which the gravity bar is positioned at the notch and is flush with the bottom plate.
Reference numerals: 1. a gravity bar; 2. a dedicated measuring head; 21. a support plate; 22. supporting the steel bar; 23. a connecting plate; 24. a bottom plate; 241. a through hole; 3. a connecting rope; 31. a scale measuring rope; 32. a pull rope; 4. a connection structure; 41. a fixed rod; 42. a groove; 421. a chute; 43. a notch; 5. a guide structure; 51. an extension plate; 52. a guide plate; 53. a guide groove; 6. connecting the loops; 61. a penetrating hole; 7. a positioning block; 71. winding a groove; 72. and a through hole.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The utility model provides a measure instrument of bored concrete pile bottom sediment thickness, as shown in fig. 1, includes gravity stick 1, special measuring head 2 and connecting rope 3, and connecting rope 3 includes scale measuring rope 31 and stay cord 32, and stay cord 32 is connected on gravity stick 1, and scale measuring rope 31 is connected on special measuring head 2; the gravity rod 1 can be a steel bar or is formed by fixedly connecting two steel bar bundles, and the bottom of the gravity rod 1 is a tip, so that the sinking resistance of the gravity rod 1 is reduced, the gravity rod 1 is conveniently sunk to the bottom of sediment, and the measuring result of sediment thickness is more accurate.
As shown in fig. 1, the special measuring head 2 comprises a ring-shaped supporting plate 21, and the gravity rod 1 is movably connected to the middle part of the supporting plate 21 through a connecting structure 4; the two scale measuring ropes 31 are respectively and fixedly connected to two ends of the supporting plate 21 which are far away from each other, so that the connection of the scale measuring ropes 31 on the supporting plate 21 is balanced, and the scale measuring ropes 31 are not mutually blocked by the gravity rod 1 and the pull ropes 32; it should be noted that the support plate 21 may be held by a constructor or may be fixed by a bracket.
As shown in fig. 1 and 2, the connection structure 4 includes a fixing rod 41, a groove 42 and a notch 43, where the two grooves 42 are respectively formed at opposite ends of the support plate 21, and two ends of the fixing rod 41 can be respectively accommodated in the corresponding grooves 42 to realize positioning of the fixing rod 41 on the support plate 21; the pull rope 32 is fixed in the middle of the fixed rod 41, so that the gravity rod 1 is positioned in the middle of the supporting plate 21; one side of the groove 42 is communicated with a sliding groove 421 for sliding the fixing rod 41, the notch 43 is formed at the bottom of the supporting plate 21 and is communicated with one side of the sliding groove 421 away from the groove 42, and the fixing rod 41 can pass through the notch 43 downwards so as to move downwards relative to the supporting plate 21.
As shown in fig. 1 and 2, the scale measuring rope 31 is penetrated and movably connected to the supporting plate 21, and the pull rope 32 is penetrated and movably connected to the fixing rod 41; the middle part above the fixed rod 41 and the upper parts at two ends of the supporting plate 21 are both fixed with a positioning block 7, so that the positioning block 7 can respectively correspond to the scale measuring rope 31 and the pull rope 32, a winding groove 71 is formed in the middle part of the side wall of the positioning block 7, a through hole 72 with an L-shaped section is formed in the middle part of the positioning block 7 and the side wall of the winding groove 71 in a communicated manner, and accordingly the scale measuring rope 31 and the pull rope 32 can enter from the bottom of the corresponding positioning block 7 and penetrate through the side wall of the winding groove 71 and then are fixed on the side wall of the winding groove 71 in a winding manner, the purposes of conveniently adjusting the lengths of the scale measuring rope 31 and the pull rope 32 and stably fixing the scale measuring rope are achieved, and the tool can be suitable for measuring the sediment thickness of pile bottoms when the pile bottoms are different in height.
As shown in fig. 1 and 2, the support plate 21 and the fixing rod 41 are provided with a guide structure 5 for guiding the lifting movement of the fixing rod 41. The guiding structure 5 comprises extending plates 51, the two extending plates 51 are respectively fixed at the bottom of the supporting plate 21, the extending plates 51 correspond to the notches 43, the end parts of the fixing rods 41 can be slidably arranged on the corresponding extending plates 51, and the guiding fixing rods 41 stably descend.
As shown in fig. 2, the guiding structure 5 further includes a guiding plate 52 and a guiding groove 53, the guiding groove 53 is formed on a side wall of the notch 43 and extends to a side wall of the extending plate 51, the guiding plate 52 is L-shaped, the two guiding plates 52 are respectively fixed at two ends of the fixing rod 41, the guiding plate 52 at one end of the fixing rod 41 is bent upwards, the guiding plate 52 at the other end is bent downwards, the guiding plates 52 at two ends of the fixing rod 41 are reversely arranged, and the guiding plates 52 are respectively and slidably arranged in the corresponding guiding grooves 53, so that on one hand, the guiding rod 41 stably slides, on the other hand, the guiding plate 52 plays a limiting role on the lifting process of the fixing rod 41 in an up-down direction, and the inclination generated when the fixing rod 41 is lifted is avoided, so that the measuring error is reduced.
As shown in fig. 1 and 2, the bottom of the extension plate 51 is fixed by a connection ring 6, and a penetration hole 61 through which the scale string 31 passes is formed in the connection ring 6; the connecting ring 6 plays a role of supporting the extension plate 51, so that the structure of the extension plate 51 is more stable; the penetration holes 61 provide space for penetration of the scale cord 31, avoiding affecting the detection accuracy of the scale cord 31.
As shown in fig. 1 and 3, the special measuring head 2 further comprises a connecting plate 23 and a bottom plate 24, the connecting plate 23 is located below the supporting plate 21, the bottom plate 24 is located below the connecting plate 23, and a through hole 241 for the gravity rod 1 to pass through is formed in the middle of the bottom plate 24.
As shown in fig. 1 and 3, the special measuring head 2 further comprises supporting steel bars 22, scale measuring ropes 31 are fixedly connected to the connecting plate 23, one ends of the supporting steel bars 22 are fixed at equal intervals at the bottom of the connecting plate 23, and the other ends of the supporting steel bars are inclined downwards in a direction away from the connecting plate 23 and extend and are fixed at the edge of the upper part of the bottom plate 24 to play a role of supporting the bottom plate 24; with the fixing bar 41 positioned at the notch 43, the upper portion of the gravity bar 1 is flush with the upper portion of the connection plate 23, and the bottom of the gravity bar 1 is flush with the bottom of the bottom plate 24, thereby maintaining the pull rope 32 and the scale measuring rope 31 in equal length.
The application method of the tool for measuring the sediment thickness of the pile bottom of the cast-in-place pile comprises the following steps of:
A. the positions of the scale measuring ropes 31 on the supporting plate 21 and the positions of the pull ropes 32 on the fixing rods 41 are adjusted to adapt to the depths of different pile bottoms and keep the supporting plate 21 and the connecting rings 6 to be always positioned above the ground and at the positions which are easy to operate by constructors;
B. holding the support plate 21 or fixing the support plate 21 on a bracket, positioning the fixing rod 41 in the groove 42, and positioning the gravity bar 1 above the through hole 241; slowly placing the bottom plate 24 into the bottom of the pile hole until the bottom plate 24 contacts sediment at the bottom of the pile hole and is stably placed above the sediment, and keeping the scale measuring rope 31 in a stretched state;
C. then holding the fixing rod 41 by hand and rotating to the notch 43 along the sliding groove 421, when the fixing rod 41 is positioned at the notch 43, the bottom of the fixing rod 41 is level with the bottom of the supporting plate 21, the bottom of the gravity rod 1 is level with the bottom of the bottom plate 24, then the fixing rod 41 passes through the notch 43 and stably descends along the extension plate 51, and the guide plate 52 is slidably arranged in the guide groove 53, so that the gravity rod 1 is balanced; the bottom of the gravity rod 1 passes through the through hole 241 and is slowly inserted into the pile bottom until the gravity rod 1 is no longer sinking;
D. the moving distance of the fixing rod 41 relative to the supporting plate 21 at this time is recorded as the thickness of the sediment to be measured.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above examples, and all technical solutions belonging to the concept of the present invention belong to the protection scope of the present invention. It should be noted that modifications and adaptations to the present invention may occur to one skilled in the art without departing from the principles of the present invention and are intended to be within the scope of the present invention.
Claims (4)
1. The utility model provides a measure instrument of bored concrete pile bottom sediment thickness, includes gravity stick (1), its characterized in that: the measuring device is characterized by further comprising a special measuring head (2) and a connecting rope (3), wherein the connecting rope (3) comprises a scale measuring rope (31) and a pull rope (32), the pull rope (32) is connected to the gravity rod (1), and the scale measuring rope (31) is connected to the special measuring head (2); the special measuring head (2) comprises a bottom plate (24), a scale measuring rope (31) and a pull rope (32) are equal in length when the bottom of the gravity rod (1) is leveled with the bottom of the bottom plate (24), a through hole (241) for the gravity rod (1) to pass through is formed in the middle of the bottom plate (24), the special measuring head (2) further comprises a supporting plate (21) connected with the bottom plate (24), the gravity rod (1) is connected with the supporting plate (21) through a connecting structure (4), the connecting structure (4) comprises a fixing rod (41), a groove (42) and a notch (43), the groove (42) is formed in the supporting plate (21), the fixing rod (41) is contained in the groove (42), and the pull rope (32) is fixed in the middle of the fixing rod (41); one side of the groove (42) is communicated with a sliding groove (421) for the fixing rod (41) to slide; the special measuring head (2) further comprises supporting steel bars (22) and connecting plates (23), one ends of the supporting steel bars (22) are fixed at the edge of the bottom plate (24), the other ends of the supporting steel bars are obliquely fixed on the connecting plates (23), the scale measuring ropes (31) are fixedly connected onto the connecting plates (23), when the fixing rods (41) are positioned at the notches (43), the upper parts of the gravity bars (1) are flush with the upper parts of the connecting plates (23), the scale measuring ropes (31) are movably connected onto the supporting plates (21), and the pull ropes (32) are movably connected onto the fixing rods (41); the middle part of the fixed rod (41) and the supporting plate (21) are both fixed with a positioning block (7), a winding groove (71) is formed in the side wall of the positioning block (7), a through hole (72) is formed in the side wall of the positioning block (7) and the winding groove (71) in a communicating manner, the scale measuring rope (31) and the pull rope (32) can pass through the corresponding through hole (72) and are wound at the winding groove (71), and a guide structure (5) for guiding the movement of the fixed rod (41) is arranged on the supporting plate (21) and the fixed rod (41); the guide structure (5) comprises an extension plate (51), a guide plate (52) and a guide groove (53), wherein the extension plate (51) is fixed on the support plate (21) and corresponds to the notch (43), the guide groove (53) is formed on the side wall of the notch (43) and extends to the side wall of the extension plate (51), the guide plate (52) is fixed on the end part of the fixing rod (41) and is slidably arranged in the guide groove (53), the extension plate (51) is fixed through a connecting ring (6), and a penetrating hole (61) for the scale measuring rope (31) to penetrate is formed in the connecting ring (6).
2. A tool for measuring the pile bottom sediment thickness of a cast-in-place pile according to claim 1, wherein: the guide plates (52) fixed to the ends of the fixing rods (41) are arranged in the opposite direction.
3. A tool for measuring the pile bottom sediment thickness of a cast-in-place pile according to claim 1, wherein: the gravity bar (1) can be formed by fixedly connecting a steel bar or two steel bar bundles; and the bottom of the gravity rod (1) is a tip.
4. A method of using a tool for measuring the thickness of a pile bottom sediment of a cast-in-place pile according to any one of claims 1-3, characterized in that: the method comprises the following steps:
A. the positions of the scale measuring ropes (31) on the supporting plates (21) and the positions of the pull ropes (32) on the fixing rods (41) are adjusted to adapt to the depths of different pile bottoms and keep the supporting plates (21) and the connecting rings (6) to be always positioned above the ground and at the positions which are easy to operate by constructors;
B. holding the support plate (21) or fixing the support plate (21) on the bracket, positioning the fixing rod (41) in the groove (42), and positioning the gravity rod (1) above the through hole (241); slowly placing the bottom plate (24) into the bottom of the pile hole until the bottom plate (24) contacts with sediment at the bottom of the pile hole and is stably placed above the sediment, and keeping the scale measuring rope (31) in a stretching state;
C. then holding the fixing rod (41) by hand and rotating the fixing rod to the notch (43) along the sliding groove (421), when the fixing rod (41) is positioned at the notch (43), the bottom of the fixing rod (41) is level with the bottom of the supporting plate (21), the bottom of the gravity rod (1) is level with the bottom of the bottom plate (24), then the fixing rod (41) passes through the notch (43) and stably descends along the extension plate (51), and the guide plate (52) is slidably arranged in the guide groove (53) so as to keep the gravity rod (1) balanced; the bottom of the gravity rod (1) passes through the through hole (241) and is slowly inserted into the pile bottom until the gravity rod (1) is not sunk any more;
D. recording the moving distance of the fixing rod (41) relative to the supporting plate (21) at the moment, namely the thickness of the sediment to be measured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910847908.9A CN110499793B (en) | 2019-09-09 | 2019-09-09 | Tool for measuring pile bottom sediment thickness of cast-in-place pile and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910847908.9A CN110499793B (en) | 2019-09-09 | 2019-09-09 | Tool for measuring pile bottom sediment thickness of cast-in-place pile and using method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110499793A CN110499793A (en) | 2019-11-26 |
| CN110499793B true CN110499793B (en) | 2024-01-02 |
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| JP5528642B2 (en) * | 2011-11-29 | 2014-06-25 | 大裕株式会社 | Deposit thickness measuring apparatus and deposit thickness measuring method |
| CN204240908U (en) * | 2014-10-24 | 2015-04-01 | 中建海峡建设发展有限公司 | Sediment thickness survey instrument at the bottom of priming concrete pile hole |
| CN206752536U (en) * | 2017-05-25 | 2017-12-15 | 中建八局第三建设有限公司 | A kind of cast-in-situ bored pile bottom hole sediment measurement apparatus |
| CN210827617U (en) * | 2019-09-09 | 2020-06-23 | 浙江诚博建设工程有限公司 | Tool for measuring thickness of sediment at bottom of cast-in-place pile |
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2019
- 2019-09-09 CN CN201910847908.9A patent/CN110499793B/en active Active
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| JP5528642B2 (en) * | 2011-11-29 | 2014-06-25 | 大裕株式会社 | Deposit thickness measuring apparatus and deposit thickness measuring method |
| CN204240908U (en) * | 2014-10-24 | 2015-04-01 | 中建海峡建设发展有限公司 | Sediment thickness survey instrument at the bottom of priming concrete pile hole |
| CN206752536U (en) * | 2017-05-25 | 2017-12-15 | 中建八局第三建设有限公司 | A kind of cast-in-situ bored pile bottom hole sediment measurement apparatus |
| CN210827617U (en) * | 2019-09-09 | 2020-06-23 | 浙江诚博建设工程有限公司 | Tool for measuring thickness of sediment at bottom of cast-in-place pile |
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