CN210459321U - Pile foundation static load test equipment for improving safety - Google Patents

Abstract

The utility model relates to an improve pile foundation static test equipment of security belongs to the technical field that ground basis detected, and it is including setting up at the bearing platform of experimental stake both sides, be located experimental stake top and with the jack of the coaxial setting of experimental stake and set up the counter weight subassembly in the jack top, the counter weight subassembly is including piling up the balancing weight that forms each other, and the balancing weight level is taken on the top of two bearing platforms, and the fixed locating lug that is provided with in bottom surface of balancing weight, the constant head tank with locating lug looks adaptation is seted up to the top surface of balancing weight, and vertical spacing hole has been seted up to the top both sides of every bearing platform, and spacing downthehole interpolation is equipped with vertical spacing post, and spacing post contacts with the side butt of balancing weight, the utility model discloses the effect of security when having the improvement experiment.

Description

Pile foundation static load test equipment for improving safety

Technical Field

The utility model belongs to the technical field of the technique that foundation basis detected and specifically relates to an improve pile foundation static load test equipment of security.

Background

The foundation base refers to an enlarged part of a house based on a foundation, in which walls or columns are buried in the ground. The design and inspection of foundation foundations is an important ring of work for construction engineers. The foundation detection comprises foundation type, material, size and embedding depth; the degree of cracking, corrosion or damage to the foundation; strength grade of the base material; inclination, bending, twisting, etc. of the foundation; the penetration depth of the pile foundation, the condition of the bearing stratum, the quality of the pile body and the like. The static load test of the pile foundation is a technology for detecting the bearing capacity of the pile foundation in engineering. In the aspect of determining the ultimate bearing capacity of a single pile, the method is the most accurate and reliable test method at present, and is used for judging whether a certain dynamic load test method is mature or not, and the comparison error of static load test results is taken as the basis. Therefore, the single pile static load test is listed as the first place in each foundation design and treatment specification. The loading method for carrying out the static load test of the pile foundation comprises a pile loading method, an anchor pile method and a self-balancing method.

The pile-loading method generally adopts a pile-loading reaction beam device, a bearing platform is arranged on a pile top by using a steel beam, a balancing weight is stacked on the bearing platform, and the bearing platform is gradually jacked up by a jack placed at a pile head, so that force is applied to a pile body. The bearing platform is set to be square or rectangular according to the requirement, and the balancing weight used by the balancing weight generally adopts a concrete precast block and a precast pile.

The above prior art solutions have the following drawbacks: because the balancing weight is more, and weight is more heavy, and the pressure of piling and carrying many times back and exerting bearing platform is also great, and the bearing platform can take place the local settlement skew in the use, leads to piling of balancing weight to carry the unbalance, arouses the balancing weight landing or the phenomenon of collapsing very easily, and the security is relatively poor.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an improve pile foundation static load test equipment of security reaches the effect of the security when improving the experiment.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

the utility model provides an improve pile foundation static test equipment of security, is including setting up at the bearing platform of experimental stake both sides, be located experimental stake top and with the jack of the coaxial setting of experimental stake and set up the counter weight subassembly in the jack top, the counter weight subassembly is including piling up the balancing weight that forms each other, and the balancing weight level is taken on the top of two bearing platforms, and the fixed location lug that is provided with in bottom surface of balancing weight, the constant head tank with location lug looks adaptation is seted up to the top surface of balancing weight, and vertical spacing hole has been seted up to the top both sides of every bearing platform, and spacing downthehole interpolation is equipped with vertical spacing post, the side butt contact of spacing post and balancing weight.

Through adopting above-mentioned technical scheme, when experimental, at first pile up a plurality of balancing weights at the top of bearing platform layer by layer through the crane, the weight of piling up sets up according to 125% of the design bearing capacity of experimental stake. In the in-process that piles up, inside the constant head tank is gone into to the locating lug card, make can form reliable and stable piling up between two upper and lower adjacent balancing weights, the equilibrium of balancing weight is better during the experiment, the balancing weight piles up the back that finishes, spacing post is hoisted to the rethread crane, and vertically insert spacing downthehole portion, the testing personnel is when testing, can stand the position department between two bearing platforms, because the top both sides position department of bearing platform all inserts and is equipped with spacing post, therefore spacing post can shelter from spacing with the balancing weight that piles up, balancing weight landing injures the testing personnel by crashing when effectively having prevented that bearing platform from taking place the homonymy and subsiding, the security is improved.

The utility model discloses further set up to: the locating convex block comprises a first convex block and a second convex block, the locating groove comprises a first matching groove matched with the first convex block and a second matching groove matched with the second convex block, the first convex block and the second convex block are respectively arranged on the lower surfaces of two different upper and lower adjacent balancing weights, and the first matching groove and the second matching groove are respectively arranged on the upper surfaces of two different upper and lower adjacent balancing weights.

Through adopting above-mentioned technical scheme, the balancing weight is when piling up, and upper and lower adjacent balancing weight is fixed a position through the joint, specifically is first lug card income first cooperation inslot, and second lug card goes into second cooperation inslot to first lug and second lug set up respectively in the lower surface of two upper and lower adjacent different balancing weights, consequently make the balancing weight atress more even when piling up, and stability is higher.

The utility model discloses further set up to: the first cooperation groove of seting up on the balancing weight is provided with one, and the second cooperation groove of seting up on the balancing weight is provided with two, and just first cooperation groove is located the intermediate position department of balancing weight, and after a plurality of balancing weights were piled up each other, the horizontal projection in first cooperation groove was located the middle of the horizontal projection in two second cooperation grooves on same balancing weight.

Through adopting above-mentioned technical scheme, the horizontal projection in first cooperation groove is located the horizontal projection's in two second cooperation grooves on same balancing weight intermediate position department, and the position of joint is more when consequently a plurality of balancing weights pile up each other, and the atress scope is bigger, and stability after piling up is higher, therefore the balancing weight is higher at the equilibrium of experimentation, is difficult for taking place relative slip, and the security is better.

The utility model discloses further set up to: first jack has been seted up on the balancing weight, after a plurality of balancing weights are piled up each other, the horizontal projection of first jack is located the intermediate position department in first cooperation groove, aligns from top to bottom a plurality of first jacks on a plurality of balancing weights, and first jack interpolation is equipped with first inserted bar, and first inserted bar runs through a plurality of balancing weights from last to down but does not run through the balancing weight of bottommost. Through adopting above-mentioned technical scheme, first inserted bar runs through a plurality of balancing weights from last to down but does not run through the balancing weight of bottommost, therefore first inserted bar can form a whole with a plurality of balancing weights, has further effectively prevented among the test process mutual slip between a plurality of balancing weights, therefore the security is higher.

The utility model discloses further set up to: the balancing weight is provided with a second jack, when the balancing weights are stacked, the horizontal projection of the second jack is located at the middle position of the second matching groove, the second jacks on the balancing weights are aligned up and down, a second inserting rod is inserted into the second jack, and the second inserting rod penetrates through the balancing weights from top to bottom and then is inserted into the ground.

Through adopting above-mentioned technical scheme, the second inserted bar inserts in ground after running through a plurality of balancing weights from last to extremely down, therefore the second inserted bar can further restrict the balancing weight, make stability between a plurality of balancing weights after the pile higher, and the second inserted bar inserts behind the ground, the second inserted bar can form stable fixed relatively ground, the balancing weight can take place little relative slip with the second inserted bar when experimental, the second inserted bar can not cause too much interference to the balancing weight, when guaranteeing experimental precision, the stability and the security of experimentation have been improved.

The utility model discloses further set up to: the top end of the first inserted bar is fixedly provided with a first limiting head, the top end of the second inserted bar is fixedly provided with a second limiting head, the size of the first limiting head is larger than that of the first inserted bar, and the size of the second limiting head is larger than that of the second inserted bar.

Through adopting above-mentioned technical scheme, the setting up of first spacing head and second spacing head makes the extraction and the insertion of first inserted bar and second inserted bar more convenient, improves the efficiency of preparation work before the experiment.

The utility model discloses further set up to: the top end of the limiting column is fixedly provided with a steel cable, and one end of the steel cable, which is far away from the limiting column, inclines downwards towards the center direction, which is far away from the bearing platform, and is fixed with the ground.

Through adopting above-mentioned technical scheme, the cable wire is connected with the top position fixed connection of spacing post, the other end of cable wire is fixed subaerial towards the center direction slope backward of keeping away from the bearing platform, consequently, receive the straining force that deviates from each other with two spacing posts on the bearing platform, when the homonymy subsides the slope takes place for the bearing platform, the cable wire can be taut does not take place to subside the spacing post of one side, thereby make the bearing platform can not take place the slope easily, the spacing post that is coordinating again blocks the balancing weight, make the balancing weight can not follow the landing on the bearing platform easily, and then the security in the test process has been improved greatly.

The utility model discloses further set up to: the top end of the jack is fixedly provided with a supporting plate, and a supporting groove matched with the supporting plate is formed in the bottom surface of the balancing weight right above the supporting plate.

Through adopting above-mentioned technical scheme, the supporting disk makes the area of contact between jack and the balancing weight bigger, consequently stability is higher when experimental, the balancing weight can not appear the slope phenomenon because the atress is uneven, the security in the test process has further been improved, in the test process, the jack drives the supporting disk card and goes into the support inslot portion, consequently make relative slip can not appear between supporting disk and the balancing weight, the atress of balancing weight is more stable, the test result is more accurate, the security is higher simultaneously.

To sum up, the utility model discloses a beneficial technological effect does:

1. by arranging the first lug, the first matching groove and the second lug and the second matching groove, the stability of the upper and lower adjacent counter weights is higher when the counter weights are stacked, and the safety of the test is higher;

2. by arranging the first inserting rod vertically inserted into the first inserting hole and the second inserting rod vertically inserted into the second inserting hole, the stability of the stacked balancing weights is higher, relative sliding cannot occur, and the safety in the test process is further improved;

3. through setting up the cable wire of holding spacing post for spacing post can block the balancing weight steadily, prevents the balancing weight landing, and then has improved the security among the test process.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is an exploded schematic view of two adjacent counterweights;

fig. 3 is a schematic diagram of the explosion structure of the present invention;

FIG. 4 is an enlarged partial schematic view at A of FIG. 3;

fig. 5 is an exploded view intended to emphasize the support slot and the support disk.

In the figure, 1, test pile; 2. a load-bearing platform; 21. a limiting hole; 22. a limiting column; 221. a chute; 222. a limiting groove; 223. a pull rod; 2231. a limiting block; 3. a steel cord; 4. a jack; 41. a support disc; 411. a support groove; 5. a balancing weight; 51. a first jack; 511. a first plunger; 512. a first stopper; 52. a second jack; 521. a second plunger; 522. a second limiting head; 6. positioning the bump; 61. a first bump; 62. a second bump; 7. positioning a groove; 71. a first mating groove; 72. a second mating groove.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The utility model provides a pile foundation static test equipment of security improves, as shown in fig. 1, including inserting locate the below ground and expose the partly experimental stake 1 in ground, the fixed bearing platform 2 just right each other that is provided with in both sides of experimental stake 1, the counter weight subassembly has been set up on the top of bearing platform 2, the counter weight subassembly includes a plurality of balancing weights 5 that pile up each other, and the weight of balancing weight 5 sets up according to the 125% of the design bearing capacity of experimental stake 1, the coaxial jack 4 that is provided with in top of experimental stake 1, 4 vertical up of jack and with the bottom contact of balancing weight 5. During the experiment, after building balancing weight 5, jack 4 begins to start, and jack 4 pushes up balancing weight 5 to top, and balancing weight 5 can be applyed for experimental stake 1 to jack 4's reaction force, subsides until experimental stake 1, notes the bearing capacity this moment, is experimental stake 1's the biggest dead load promptly.

As shown in fig. 3, the bearing platform 2 is a rectangular parallelepiped, the long sides of the two bearing platforms 2 are parallel to each other, two limiting holes 21 are formed in the two sides of the upper surface of the bearing platform 2 in the length direction, limiting posts 22 are slidably inserted in the limiting holes 21, the length of each limiting post 22 is selected according to actual conditions, and the selected reference is that the length of each limiting post 22 is not less than the sum of the height of the bearing platform and the height of all the balancing weights 5. In the process of the test, bearing platform 2 receives the load of balancing weight 5 for a long time, and because bearing platform 2 is the cuboid, therefore 2 length direction's of bearing platform both sides take place to subside very easily, when 2 length direction's of two bearing platforms take place synchronous settlement with one side, balancing weight 5 is very easy to be followed bearing platform 2 and is slided, injure the testing personnel by a crashing object, the degree of danger is higher, but after inserting spacing hole 21 with spacing post 22, even bearing platform 2 takes place the homonymy and subsides, spacing post 22 also can block balancing weight 5, prevent that balancing weight 5 from directly landing from bearing platform 2, the security is improved.

Combine fig. 1 and fig. 3, the fixed cable wire 3 that is provided with in position department that spacing post 22 is close to the top, cable wire 3 forms relatively fixed with ground after locating downwardly extending towards the central point that deviates from bearing platform 2, insert spacing post 22 earlier during the installation behind the spacing hole 21, then form cable wire 3 and ground fixedly, spacing post 22 can be strained to cable wire 3, make spacing post 22 more stable after inserting spacing hole 21, after two bearing platforms 2 take place the homonymy and subside, keep away from cable wire 3 of subsiding one side and can hold spacing post 22, make spacing post 22 pulling bearing platform 2, bearing platform 2 receives a pulling force towards the one side of keeping away from the subside, and then make bearing platform 2 can not subside easily, the security further improves during the experiment.

Combine fig. 3 and fig. 4, vertical spout 221 has been seted up on the top of spacing post 22, and spout 221 runs through to the lateral wall of spacing post 22, spacing groove 222 has been seted up to the top central point department of putting of spacing post 22, spacing groove 222 and spout 221 intercommunication, and spacing groove 222 is also vertical setting, the cross sectional area size of spacing groove 222 is greater than the cross sectional area size of spout 221, slide in the spout 221 and be provided with the pull rod 223 of level setting, the fixed stopper 2231 that is provided with spacing groove 222 looks adaptation in the both ends of pull rod 223. Before the test, firstly, the limiting columns 22 are inserted into the limiting holes 21, the sliding grooves 221 on the two limiting columns 22 on the same bearing platform 2 are opposite to each other, then the limiting blocks 2231 are aligned to the limiting grooves 222, the pull rod 223 slides into the sliding grooves 221, the bottom end of the pull rod 223 can abut against the upper surface of the topmost counterweight block 5, and then the steel cable 3 is obliquely pulled downwards to be fixed with the ground. The setting of pull rod 223 makes two spacing posts 22 on same bearing platform 2's wholeness stronger, therefore no matter what side of bearing platform 2 takes place to subside, pull rod 223 can both take up two spacing posts 22, is cooperating cable wire 3 for spacing post 22's atress can share each other, stability is higher, further improves the security.

With reference to fig. 2 and 3, a positioning protrusion 6 is fixedly disposed on the upper surface of the weight block 5, and a positioning groove 7 adapted to the positioning protrusion 6 is disposed on the lower surface of the weight block 5. In order to improve the stacking stability of the balancing weights 5, the positioning protrusions 6 of the two balancing weights 5 adjacent to each other up and down are different. Specifically, the positioning protrusion 6 includes a first protrusion 61 and a second protrusion 62, the positioning groove 7 includes a first matching groove 71 and a second matching groove 72, the first protrusion 61 is fixedly disposed on the upper surface of one of the balancing weights 5, the second protrusion 62 is fixedly disposed on the upper surface of the adjacent balancing weight 5, the first protrusion 61 is cross-shaped and fixedly disposed at the middle position of the balancing weight 5, the second protrusion 62 is plum blossom-shaped, two second protrusions 62 are disposed on the corresponding balancing weight 5, and the two second protrusions 62 are fixedly disposed at the two sides of the center of the balancing weight 5, the horizontal projections of the two second protrusions 62 on the same balancing weight 5 are located at the two sides of the first protrusion 61 on the other balancing weight 5, the first matching groove 71 is disposed on the lower surface of the balancing weight 5 adjacent to the first protrusion 61, the first matching groove 71 is adapted to the first protrusion 61, the second matching groove 72 is disposed on the lower surface of the balancing weight 5 adjacent to the second protrusion 62, the second mating groove 72 mates with the second protrusion 62. After a plurality of balancing weights 5 pile up each other, because the joint cooperation of constant head tank 7 and location lug 6 for the stability that balancing weight 5 piled up is higher, can not take place relative slip, thereby stability is higher when experimental.

Referring to fig. 2 and 3, the weight member 5 has a first vertical insertion hole 51 formed at a middle position of the first protrusion 61, the weight member 5 has a second vertical insertion hole 52 formed at a middle position of the second protrusion 62, and when a plurality of balancing weights 5 pile up each other, the first jack 51 of every balancing weight 5 aligns from top to bottom, the second jack 52 of every balancing weight 5 aligns from top to bottom, first inserted bar 511 has been inserted in first jack 51, first inserted bar 511 from last to running through to the middle height position department of balancing weight 5 of bottommost all the time, second inserted bar 521 runs through all balancing weights 5 from top to bottom completely and inserts inside the ground, the cooperation of first inserted bar 511 and first jack 51, the cooperation of second inserted bar 521 and second jack 52 makes the stacking stability between balancing weight 5 higher, the possibility that takes place relative slip is littleer, thereby further improved experimental security.

As shown in fig. 3, a first limiting head 512 is fixedly disposed at the top end of the first inserting rod 511, the cross-sectional dimension of the first limiting head 512 is larger than that of the first inserting rod 511, and the first limiting head 512 facilitates the clamping of the first inserting rod 511, so that the process of inserting into the first inserting hole 51 is smoother. The top end of the second inserting rod 521 is fixedly provided with a second limiting head 522, the sectional dimension of the second limiting head 522 is larger than that of the second inserting rod 521, and the second limiting head 522 enables the second inserting rod 521 to be more conveniently clamped, so that the process of inserting into the second inserting hole 52 is smoother. In the test process, the types of the first insertion rod 511 and the second insertion rod 521 are multiple, and the lengths of the first insertion rod 511 and the second insertion rod 521 in different types are different, so that when test piles 1 with different static load capacities are detected, the number of the counter weights 5 is different, and the length requirements of the corresponding first insertion rod 511 and the corresponding second insertion rod 521 are also different.

As shown in fig. 5, the top end of the jack 4 is fixedly provided with a disc-shaped supporting plate 41, the lower surface of the counterweight 5 right above the supporting plate 41 is provided with a supporting groove 411 matched with the supporting plate 41, the supporting plate 41 is clamped into the supporting groove 411 during the test to jack up the counterweight 5, the balance of the counterweight 5 is improved by the matching of the supporting plate 41 and the supporting groove 411, and the safety in the test process is indirectly improved.

The implementation principle of the embodiment is as follows: before the test, a plurality of balancing weights 5 are stacked up and down according to requirements, when the balancing weights 5 are stacked, the positioning lug 6 is clamped into the positioning groove 7, so that two adjacent balancing weights 5 are more stable and cannot easily slide, after the balancing weights 5 are stacked, the first inserting rod 511 and the second inserting rod 521 are selected according to actual sizes, the first inserting rod 511 is inserted into the first inserting hole 51, the second inserting rod 521 is inserted into the second inserting hole 52, the second inserting rod 521 vertically penetrates through the balancing weights 5 until the balancing weights are inserted into the ground, the first inserting rod 511 and the second inserting rod 521 can enable the connection between the balancing weights 5 to be tighter, the stability is higher, the balance performance is better, then the steel cable 3 is fixed on the limiting column 22, the limiting column 22 is inserted into the limiting hole 21, so that the limiting column 22 blocks two sides of the balancing weights 5, then the pull rod 223 slides down into the sliding groove 221 from top to bottom, the pull rod 223 tensions the two limiting columns 22, the other end of the steel cable 3 is inclined downwards towards one side far away from the center of the bearing platform 2 and fixed with the ground, so that the steel cable 3 can strain the limiting column 22, the bearing platform 2 is effectively prevented from sinking, and the safety during the test is improved.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims (8)

1. The utility model provides an improve pile foundation static test equipment of security, including setting up bearing platform (2) in experimental stake (1) both sides, be located experimental stake (1) top and with jack (4) and the counter weight component of setting in jack (4) top of experimental stake (1) coaxial setting, its characterized in that: the counter weight subassembly is including piling up balancing weight (5) that forms each other, balancing weight (5) level is taken on the top of two bearing platform (2), the fixed location lug (6) that is provided with in bottom surface of balancing weight (5), constant head tank (7) with location lug (6) looks adaptation are seted up to the top surface of balancing weight (5), vertical spacing hole (21) have been seted up to the top both sides of every bearing platform (2), spacing hole (21) interpolation is equipped with vertical spacing post (22), the side butt contact of spacing post (22) and balancing weight (5).

2. The safety-improved pile foundation static load test equipment according to claim 1, characterized in that: the positioning lug (6) comprises a first lug (61) and a second lug (62), the positioning groove (7) comprises a first matching groove (71) matched with the first lug (61) and a second matching groove (72) matched with the second lug (62), the first lug (61) and the second lug (62) are respectively arranged on the lower surfaces of two different upper and lower adjacent counterweight blocks (5), and the first matching groove (71) and the second matching groove (72) are respectively arranged on the upper surfaces of two different upper and lower adjacent counterweight blocks (5).

3. The safety-improved pile foundation static load test equipment according to claim 1, characterized in that: first cooperation groove (71) of seting up on balancing weight (5) are provided with one, and second cooperation groove (72) of seting up on balancing weight (5) are provided with two, and first cooperation groove (71) are located the intermediate position department of balancing weight (5), and after a plurality of balancing weights (5) are piled up each other, the horizontal projection in first cooperation groove (71) is located the middle of the horizontal projection in two second cooperation grooves (72) on same balancing weight (5).

4. The safety-improved pile foundation static load test equipment according to claim 3, characterized in that: first jack (51) have been seted up on balancing weight (5), after a plurality of balancing weights (5) are piled up each other, the horizontal projection of first jack (51) is located the intermediate position department of first cooperation groove (71), align from top to bottom a plurality of first jacks (51) on a plurality of balancing weights (5), first jack (51) interpolation is equipped with first inserted bar (511), first inserted bar (511) are from last to running through a plurality of balancing weights (5) down but do not run through balancing weight (5) of bottommost.

5. The safety-improved pile foundation static load test equipment according to claim 4, characterized in that: seted up second jack (52) on balancing weight (5), after a plurality of balancing weights (5) are piled up each other, the horizontal projection of second jack (52) is located the intermediate position department of second cooperation groove (72), aligns from top to bottom in a plurality of second jacks (52) on a plurality of balancing weights (5), second jack (52) interpolation is equipped with second inserted bar (521), second inserted bar (521) from last to inserting in ground after running through a plurality of balancing weights (5) down.

6. The safety-improved pile foundation static load test equipment according to claim 5, wherein: the top end of the first inserted link (511) is fixedly provided with a first limiting head (512), the top end of the second inserted link (521) is fixedly provided with a second limiting head (522), the size of the first limiting head (512) is larger than that of the first inserted link (511), and the size of the second limiting head (522) is larger than that of the second inserted link (521).

7. The safety-improved pile foundation static load test equipment according to claim 1, characterized in that: the top end of the limiting column (22) is fixedly provided with a steel cable (3), and one end, far away from the limiting column (22), of the steel cable (3) inclines downwards towards the center direction far away from the bearing platform (2) and is fixed with the ground.

8. The safety-improved pile foundation static load test equipment according to claim 1, characterized in that: the top end of the jack (4) is fixedly provided with a supporting plate (41), and the bottom surface of a balancing weight (5) which is positioned right above the supporting plate (41) is provided with a supporting groove (411) matched with the supporting plate (41).

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