A rammer and a dynamic compaction construction process for foundation using the rammer

Abstract

The present application relates to a rammer and a foundation compaction construction process using the rammer, and relates to the field of compaction equipment. The rammer includes a chassis and a top plate, and a locking rod assembly is rotatably connected to the chassis. A receiving plate is placed on the side of the chassis close to the top plate, and the locking rod assembly passes through the receiving plate and the top plate. A fixing piece is detachably connected to the locking rod assembly, which is pressed against the side of the top plate away from the receiving plate. A plurality of hammer discs are stacked on the side of the receiving plate away from the chassis, and each of the hammer discs is provided with a long strip mounting hole on the side away from the chassis. A plurality of locking plates are fixedly connected to the locking rod assembly, and one locking plate corresponds to one mounting hole, and the locking plate is placed in the mounting hole. Both long side walls of the mounting hole are provided with arc grooves. The locking rod assembly is rotated, and both ends of each locking plate are inserted into a corresponding arc groove. The present application has the effect of improving the work efficiency of adjusting the weight of the rammer.

Description

Technical Field

[0001] The present application relates to the field of compaction equipment, and in particular to a rammer and a foundation compaction construction process using the rammer. Background Art

[0002] There are three main types of rammers currently used in the market: cast rammers, cast rammers and laminated combination rammers. Laminated combination rammers are made by stacking multiple hammer discs and connecting and fixing all the hammer discs with a bolt, that is, the bolt goes directly from the top of the rammer to the bottom. This method adjusts the weight of the rammer by adjusting the number of hammer discs.

[0003] However, when the weight of the rammer needs to be adjusted, the worker must remove all the bolts before adding or removing the hammer disc, which results in low work efficiency. Summary of the invention

[0004] In order to improve the work efficiency of adjusting the weight of a rammer, the present application provides a rammer and a foundation compaction construction process using the rammer.

[0005] In the first aspect, the present application provides a rammer that adopts the following technical solution:

[0006] A rammer comprises a base plate and a top plate, wherein a locking rod assembly is rotatably connected to the base plate, a receiving plate is placed on a side of the base plate close to the top plate, and the locking rod assembly passes through the receiving plate and the top plate, and a fixing member is detachably connected to the locking rod assembly, which is pressed against a side of the top plate away from the receiving plate, and a plurality of hammer discs are stacked on a side of the receiving plate away from the base plate, and a long strip mounting hole is provided on a side of each of the hammer discs away from the base plate, and a plurality of locking plates are fixedly connected to the locking rod assembly, one locking plate corresponds to one mounting hole, and the locking plate is placed in the mounting hole, and arc grooves are provided on two long side walls of the mounting hole, and the locking rod assembly is rotated, and both ends of each locking plate are inserted into a corresponding arc groove.

[0007] By adopting the above technical solution, the locking rod assembly is rotated, and the locking rod assembly rotates to drive the locking plate to rotate, and each end of the locking plate assembly gradually moves in the direction close to or away from the corresponding arc groove. When the locking plate is plugged into the arc groove, each locking plate assembly locks the corresponding hammer disc. When the locking plate is separated from the arc groove and completely placed in the mounting hole, the fixing piece is removed at this time to separate the top plate from the locking rod assembly, and then the hammer disc is moved in the direction away from the locking rod assembly. The hammer disc can be separated from the locking rod assembly, and it is convenient to increase or decrease the number of hammer discs. The locking and disassembly method of the hammer disc is relatively simple, which improves the work efficiency of adjusting the weight of the rammer.

[0008] Preferably, a transmission assembly is installed on the receiving plate to drive the receiving plate to rotate in the opposite direction to the locking rod assembly.

[0009] By adopting the above technical solution, when the locking rod assembly rotates to drive the locking plate member to gradually move towards the direction inside the arc-shaped groove, the transmission assembly drives the receiving disc to rotate in the opposite direction to the locking rod assembly, facilitating the locking plate member to be inserted into the arc-shaped groove more smoothly.

[0010] Preferably, a receiving groove is formed on the surface of the receiving disc close to the chassis. The transmission assembly includes a driven gear and a driving gear arranged in the receiving groove. The driving gear is installed on the locking rod assembly. The driving gear meshes with the driven gear. The driven gear is rotatably connected to the chassis. The side wall of the receiving groove is fixedly connected with an annular member, and several convex teeth are fixedly connected to the inner side wall of the annular member. The driven gear meshes with the convex teeth.

[0011] By adopting the above technical solution, the rotation of the locking rod assembly drives the driving gear to rotate. The rotation of the driving gear drives the driven gear to rotate in the opposite direction. The rotation of the driven gear drives the receiving disc to rotate in the same direction as the driven gear through the convex teeth. In this way, when the locking rod assembly rotates, the transmission assembly can automatically drive the receiving disc to rotate, and the operation is simple and convenient.

[0012] Preferably, the locking rod assembly is threadedly connected to the chassis.

[0013] By adopting the above technical solution, when the locking rod assembly rotates to drive the locking plate member to gradually enter the arc-shaped groove, the locking rod assembly drives each locking plate member to gradually move towards the direction close to the chassis. In this way, when the locking plate member enters the arc-shaped groove, it gradually presses against the bottom wall of the arc-shaped groove, facilitating better locking of each hammer disc.

[0014] Preferably, the locking rod assembly includes fixed rods at both ends and several connecting rods. Both ends of each connecting rod are fixedly connected with locking plates. One end of each fixed rod is also fixedly connected with a locking plate. The two adjacent locking plates between adjacent connecting rods are detachably connected. The locking plate on each fixed rod is detachably connected to one of the locking plates on the adjacent connecting rod. The two adjacent locking plates are connected to form one said locking plate member.

[0015] By adopting the above technical solution, the adjacent locking plates are detachably connected. In this way, it is convenient to increase or decrease the number of locking plate members according to the number of hammer discs, and it is only necessary to control that each hammer disc is connected with a locking plate member for locking the hammer disc.

[0016] Preferably, a plurality of connecting holes are formed on the top disc, the receiving disc and each hammer disc, and the adjacent connecting holes are aligned. A plurality of arc-shaped holes are formed on the surface of the chassis close to the receiving disc, and each arc-shaped hole is aligned with the adjacent connecting hole.

[0017] By adopting the above technical solution, adjacent connecting holes are aligned, and the arc-shaped holes are aligned with the adjacent connecting holes, enabling the rammer to have a vertical air-permeable function. Therefore, when the rammer drops and hits the ground, the situation where the rammer bounces or tilts due to the push of air flow is reduced.

[0018] Preferably, a connecting cylinder is slidably inserted into each of the connecting holes, a transmission cylinder is inserted into each of the arc-shaped holes, each transmission cylinder is aligned with the adjacent connecting cylinder, a sliding ring is fixedly connected to the outer side wall of each transmission cylinder, sliding grooves are formed in both side walls of the arc-shaped holes, the lower surface wall of the sliding groove is gradually inclined upward, and both sides of each sliding ring are respectively slidably inserted into a sliding groove in the arc-shaped hole.

[0019] By adopting the above technical solution, when the locking rod assembly is rotated, the locking rod assembly drives the bearing plate to rotate through the transmission assembly. When the bearing plate rotates, it pushes the transmission cylinder to move along the arc-shaped hole. During this process, the bottom wall of the sliding groove pushes the sliding ring and the transmission cylinder to gradually rise. The transmission cylinder rises and thus extends into the adjacent connecting hole, so as to push the connecting cylinder in the adjacent connecting hole to rise. The connecting cylinder located at the top of the rammer extends into the rammer. In this way, when the hammer plate is continuously stacked on the rammer, the connecting cylinder can play a positioning role.

[0020] In a second aspect, a dynamic compaction construction process for a foundation using the rammer provided by the present application adopts the following technical solution:

[0021] A dynamic compaction construction process for a foundation using the rammer includes the following steps:

[0022] S1. Clean and level the site;

[0023] S2. Make control piles;

[0024] S3. Position the rammer;

[0025] S4. Steadily lift the rammer to the ram point position and measure the elevation of the rammer before hitting;

[0026] S5. Lift the rammer to a preset height, the rammer automatically unhooks and drops to hit the impact point, measure the elevation of the rammer top, and record the settlement amount of the ram pit;

[0027] S6. Repeat step S5;

[0028] S7. Move the rammer to the next ram point and repeat steps S3 - S5;

[0029] S8. Measure the elevation of the site and set the full compaction reference line;

[0030] S9. Compact each point one by one according to the principle of ram print overlap to complete all compaction numbers;

[0031] S10. Compact row by row to complete full compaction, level the site, and measure the elevation of the site.

[0032] By adopting the above technical solutions, the construction efficiency is relatively high, the dynamic compaction effect is relatively good, the construction cost is relatively saved, and the construction period is relatively short.

[0033] In summary, the present application includes at least one of the following beneficial technical effects:

[0034] 1. The locking and disassembly methods of the hammer plate are relatively simple, improving the working efficiency of adjusting the weight of the rammer;

[0035] 2. During the process of disassembling and assembling the hammer plate, the connecting cylinder can play a positioning effect;

[0036] 3. The construction efficiency of dynamic compaction is relatively high, and the construction period is relatively short. Description of the Drawings

[0037] Figure 1 It is a schematic structural diagram showing that the locking rod assembly does not lock the hammer plate in the embodiment of the present application.

[0038] Figure 2 It is a schematic structural diagram showing that the locking rod assembly locks the hammer plate in the embodiment of the present application.

[0039] Figure 3 It is a schematic structural diagram showing the transmission assembly in the embodiment of the present application.

[0040] Figure 4 It is a schematic structural diagram showing the position of the transmission cylinder when the locking rod assembly locks the hammer plate in the embodiment of the present application.

[0041] Figure 5 It is a schematic structural diagram showing the position of the transmission cylinder when the locking rod assembly does not lock the hammer plate in the embodiment of the present application.

[0042] Description of the Reference Numerals: 1, chassis; 2, receiving plate; 21, receiving groove; 3, top plate; 4, locking rod assembly; 41, locking plate member; 411, connecting rod; 412, locking plate; 42, fixed rod; 43, linkage key; 5, hammer plate; 51, mounting hole; 52, arc groove; 6, transmission assembly; 61, driven gear; 62, driving gear; 621, inserting through hole; 622, linkage groove; 63, annular member; 7, ventilation hole; 71, connecting hole; 72, arc hole; 721, sliding groove; 8, connecting cylinder; 9, transmission cylinder; 91, sliding ring. Detailed Embodiment

[0043] The following will further describe the present application in detail Figures 1 - 5 with reference to the accompanying drawings.

[0044] An embodiment of the present application discloses a rammer. Refer to Figure 1, the rammer includes a chassis 1, a receiving plate 2 and a top plate 3 arranged in sequence from bottom to top. A vertically upwardly provided locking rod assembly 4 is rotatably connected to the middle of the chassis 1, and the locking rod assembly 4 vertically penetrates through the receiving plate 2 and the top plate 3. A fixing member is detachably connected to the locking rod assembly 4. The fixing member includes a nut (not shown in the figure) threadedly connected to the upper end of the locking rod assembly 4, and the nut abuts against the upper surface of the top plate 3.

[0045] Referring to Figure 1 and Figure 2 , the receiving plate 2 is placed on the chassis 1. A plurality of hammer plates 5 are provided between the top plate 3 and the receiving plate 2. An installation hole 51 vertically penetrating the hammer plate 5 is formed on the upper surface of each hammer plate 5. The locking rod assembly 4 is inserted into each installation hole 51 to vertically connect a plurality of hammer plates 5 in series.

[0046] The installation hole 51 is a long strip hole. Arc-shaped grooves 52 are respectively formed on two long side walls of the installation hole 51. The locking rod assembly 4 includes a plurality of locking plate members 41. The plurality of locking plate members 41 are arranged along the length direction of the locking rod assembly 4. One locking plate member 41 corresponds to one installation hole 51, and each locking plate member 41 is inserted into the corresponding installation hole 51. Rotating the locking rod assembly 4 drives each locking plate member 41 to rotate. In this way, both ends of each locking plate member 41 respectively rotate into the corresponding arc-shaped grooves 52 on the side wall of each installation hole 51. That is, one end of each locking plate member 41 is inserted into the corresponding arc-shaped groove 52. At this time, the locking rod assembly 4 locks each hammer plate 5.

[0047] The locking rod assembly 4 includes fixing rods 42 at both ends and also includes a plurality of connecting rods 411. Locking plates 412 are respectively fixedly connected to both ends of each connecting rod 411. A locking plate 412 is also fixedly connected to one end of each fixing rod 42. One of the locking plates 412 on each connecting rod 411 is fixedly connected to one of the locking plates 412 on the adjacent connecting rod 411 through bolts and nuts. The locking plates 412 on each fixing rod 42 are fixedly connected to one of the locking plates 412 on the adjacent connecting rod 411 through bolts and nuts. After the adjacent two locking plates 412 are fixedly connected, a locking plate member 41 is formed.

[0048] When it is necessary to adjust the number of hammer discs 5, rotate the nut on the locking rod assembly 4 so that the nut gradually disengages from the top disc 3 and the locking rod assembly 4. Then move the top disc 3 upward until the top disc 3 disengages from the locking rod assembly 4, and then rotate the locking rod assembly 4 so that the locking rod assembly 4 drives each locking plate 41 to disengage from the corresponding arc-shaped groove 52 and completely enter the mounting hole 51. At this time, the uppermost hammer disc 5 can be pulled away from the rammer to reduce the number of hammer discs 5. After the number of hammer discs 5 is reduced, the uppermost connecting rod 411 is disassembled according to the number of removed hammer discs 5. Similarly, the number of hammer discs 5 is increased from the uppermost end of the rammer, and then the connecting rod 411 is installed according to the increased number of hammer discs 5 so that each hammer disc 5 has a corresponding locking plate 41.

[0049] The lower end of the locking rod assembly 4 is threadedly connected to the chassis 1. When the locking rod assembly 4 is rotated to drive each locking plate 41 to gradually insert into the corresponding arc-shaped groove 52, the locking rod assembly 4 gradually moves downward. At this time, each locking plate 41 gradually presses against the bottom wall of the arc-shaped groove 52 during the process of inserting into the arc-shaped groove 52.

[0050] Refer to Figure 2 and Figure 3 In order to facilitate the locking plate 41 to rotate and insert into the corresponding arc-shaped groove 52 more smoothly, a transmission assembly 6 is connected to the receiving disc 2. When the locking rod assembly 4 rotates, the transmission assembly 6 drives the receiving disc 2 to rotate in the opposite direction to the locking rod assembly 4, so that it is convenient for the locking plate 41 to insert into the corresponding arc-shaped groove 52 and press against the bottom wall of the arc-shaped groove 52, reducing the situation that the bottom wall of the arc-shaped groove 52 is pushed by friction when the locking plate 41 extends into the arc-shaped groove 52, resulting in the locking plate 41 not being easily inserted into the arc-shaped groove 52.

[0051] Refer to Figure 1 and Figure 3 As shown in FIGS. and, a receiving groove 21 is formed on the bottom surface of the receiving disc 2, and an annular member 63 is fixedly connected to the side wall of the receiving groove 21. The transmission assembly 6 includes three driven gears 61 and one driving gear 62 arranged in the annular member 63. Two linkage keys 43 are fixedly connected to the side wall of the locking rod assembly 4. A plugging through hole 621 is formed on the upper surface of the driving gear 62, and a linkage groove 622 is formed on the side wall of the plugging through hole 621. The locking rod assembly 4 is plugged into the plugging through hole 621, and each linkage key 43 is plugged into a corresponding linkage groove 622.

[0052] The driving gear 62 is located between the three driven gears 61, and each driven gear 61 is rotatably connected to the upper surface of the chassis 1. The driving gear 62 is meshed with each driven gear 61. A plurality of convex teeth are fixedly connected to the inner side wall of the annular member 63, and the plurality of convex teeth are evenly distributed along the inner side wall of the annular member 63. Each driven gear 61 is meshed with the convex teeth on the receiving groove 21.

[0053] Referring to Figure 2 and Figure 3 When the locking rod assembly 4 is rotated, the rotation of the locking rod assembly 4 drives the driving gear 62 to rotate through the linkage key 43. The rotation of the driving gear 62 drives each driven gear 61 to rotate. The rotation direction of the driven gear 61 is opposite to that of the driving gear 62. The rotation of the driven gear 61 drives the receiving plate 2 to rotate through the convex teeth. The rotation direction of the receiving plate 2 is the same as that of the driven gear 61. When the receiving plate 2 rotates, it can drive each hammer plate 5 to rotate together with the receiving plate 2 through friction. In this way, the locking plate 41 and the arc groove 52 can move in opposite directions, facilitating the smooth insertion of each locking plate 41 into the corresponding arc groove 52.

[0054] Referring to Figure 1 and Figure 3 A plurality of ventilation holes 7 vertically penetrating the rammer are provided on the top surface of the rammer. Each ventilation hole 7 includes a connecting hole 71 provided on the upper surfaces of the top plate 3, the receiving plate 2 and each hammer plate 5, and further includes an arc hole 72 provided on the upper surface of the bottom plate 1.

[0055] A connecting cylinder 8 is vertically slidably connected in each connecting hole 71, and the vertically adjacent connecting cylinders 8 are aligned with each other. A transmission cylinder 9 is inserted into the arc hole 72, and each transmission cylinder 9 is aligned with the vertically adjacent connecting cylinder 8. A sliding ring 91 is fixedly connected to the outer side wall of the transmission cylinder 9. Two side walls of each arc hole 72 are provided with sliding grooves 721, and the two ends of the sliding ring 91 are respectively slidably inserted into a sliding groove 721. The lower surface wall of each sliding groove 721 gradually slopes upward.

[0056] Referring to Figure 2 and Figure 4 When each locking plate 41 is inserted into the corresponding arc groove 52, at this time, the sliding ring 91 is located at the lowest point of the inclined surface of the sliding groove 721. When the locking rod assembly 4 is rotated, the locking rod assembly 4 drives the receiving plate 2 to rotate in the opposite direction to the locking rod assembly 4 through the transmission assembly 6. At this time, the inclined surface of the sliding groove 721 pushes the sliding ring 91 and the transmission cylinder 9 to rise. In this way, the upper end of the transmission cylinder 9 is inserted into the adjacent connecting hole 71, and the transmission cylinder 9 pushes each connecting cylinder 8 to rise.

[0057] Referring to Figure 1 and Figure 5 That is, when the locking plate 41 is disengaged from the corresponding arc groove 52, the upper end of each connecting cylinder 8 is inserted into the adjacent connecting hole 71 above. The upper end of the connecting cylinder 8 located at the top of the rammer protrudes from the rammer. When the hammer plate 5 needs to be installed at this time, the protruding connecting cylinder 8 is convenient for positioning, which is beneficial to align the connecting hole 71 in the hammer plate 5 to be installed with the adjacent connecting hole 71. And when the locking rod assembly 4 is rotated to lock the hammer plate 5, the connecting cylinder 8 on each hammer plate 5 is inserted into the connecting hole 71 in the adjacent hammer plate 5 above, which is beneficial for the receiving plate 2 to drive each hammer plate 5 to rotate together more smoothly.

[0058] The embodiments of the present application also disclose a dynamic compaction construction process for foundation using this rammer, which includes the following steps:

[0059] S1. Clean and level the site: According to the optimal parameters of the trial compaction and the test results, adopt suitable point compaction and full compaction construction processes.

[0060] S2. Set up control piles, set the control reference points at fixed and unchangeable positions, mark the outer contour of the rammer at each tamping point with lime, and measure the elevation of the site.

[0061] S3. Position the rammer. Lift the lifting hook to the dropping height of the ram, fix the traction steel wire rope of the hook, and lock the dropping distance.

[0062] S4. Steadily lift the ram to the tamping point position and measure the elevation of the ram before tamping.

[0063] S5. Lift the ram to the preset height, and the ram automatically unhooks and drops to tamp the tamping point. If it is found that the ram is skewed due to the inclination of the pit bottom, the pit bottom should be leveled in time. Measure the elevation of the ram top and record the settlement amount of the tamping pit.

[0064] S6. Repeat step S5, and complete the tamping of one tamping point according to the trial compaction parameters and control standards (the settlement amount of the last two tampings ≤ 100 mm).

[0065] S7. Move the ram to the next tamping point, repeat steps S3 - S5, complete the tamping of all tamping points in the first pass, level the tamping pit with a bulldozer, measure the elevation of the site with a grid, and calculate the settlement amount of half of the site.

[0066] S8. Measure the elevation of the site and set out the full compaction reference line.

[0067] S9. Tamp each point one by one according to the principle of overlapping tamping imprints to complete all the tamping numbers.

[0068] S10. Tamp row by row to complete the full compaction, level the site, and measure the elevation of the site.

[0069] The above are all the preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A rammer, comprising a chassis (1) and a top plate (3). A locking rod assembly (4) is rotatably connected to the chassis (1). Characterized in that, A receiving plate (2) is placed on one side of the chassis (1) close to the top plate (3). The locking rod assembly (4) penetrates through the receiving plate (2) and the top plate. A fixing member is detachably connected to the locking rod assembly (4) to abut against the side of the top plate facing away from the receiving plate (2). A plurality of hammer plates (5) are stacked on the side of the receiving plate (2) facing away from the chassis (1). A long-strip-shaped mounting hole (51) is formed on the side of each hammer plate (5) facing away from the chassis (1). A plurality of locking plate members (41) are fixedly connected to the locking rod assembly (4). One locking plate member (41) corresponds to one mounting hole (51), and the locking plate member (41) is placed in the mounting hole (51). Arc-shaped grooves (52) are formed on both long-strip side walls of the mounting hole (51). By rotating the locking rod assembly (4), both ends of each locking plate member (41) are inserted into a corresponding arc-shaped groove (52). A transmission assembly (6) for driving the receiving plate (2) to rotate in the opposite direction to the locking rod assembly (4) is installed on the receiving plate (2). A receiving groove (21) is formed on the side of the receiving plate (2) close to the chassis (1). The transmission assembly (6) includes a driven gear (61) and a driving gear (62) arranged in the receiving groove (21). The driving gear (62) is installed on the locking rod assembly (4). The driving gear (62) meshes with the driven gear (61). The driven gear (61) is rotatably connected to the chassis (1). An annular member (63) is fixedly connected to the side wall of the receiving groove (21). A plurality of convex teeth are fixedly connected to the inner side wall of the annular member (63). The driven gear (61) meshes with the convex teeth.

2. A rammer according to claim 1, Characterized in that, The locking rod assembly (4) is threadedly connected to the chassis (1).

3. A rammer according to claim 2, Characterized in that, The locking rod assembly (4) includes fixing rods (42) at both ends and a plurality of connecting rods (411). Locking plates (412) are fixedly connected to both ends of each connecting rod (411). Locking plates (412) are also fixedly connected to one end of each fixing rod (42). The two adjacent locking plates (412) between adjacent connecting rods (411) are detachably connected. The locking plates (412) on each fixing rod (42) are detachably connected to one of the locking plates (412) on the adjacent connecting rod (411). A locking plate member (41) is formed by connecting the two adjacent locking plates (412).

4. A rammer according to claim 1, Characterized in that, A plurality of connecting holes (71) are formed on the top plate (3), the receiving plate (2) and each hammer plate (5). The adjacent connecting holes (71) are aligned. A plurality of arc-shaped holes (72) are formed on the side of the chassis (1) close to the receiving plate (2). Each arc-shaped hole (72) is aligned with the adjacent connecting hole (71).

5. A rammer according to claim 4, Characterized in that, A connecting cylinder (8) is slidably inserted into each of the connecting holes (71), a transmission cylinder (9) is inserted into each of the arc-shaped holes (72), each of the transmission cylinders (9) is aligned with the adjacent connecting cylinder (8), a sliding ring (91) is fixedly connected to the outer side wall of each of the transmission cylinders (9), sliding grooves (721) are formed in both side walls of each of the arc-shaped holes (72), the lower surface wall of each of the sliding grooves (721) slopes upward gradually, and both sides of each of the sliding rings (91) are respectively slidably inserted into a sliding groove (721) in the arc-shaped hole (72).

6. A ground dynamic compaction construction process for a rammer as recited in any one of claims 1-5 characterized in that it comprises the following steps: S1. Clean and level the site; S2. Make control piles; S3. Position the rammer; S4. Lift the rammer steadily to the ram point position and measure the elevation of the rammer before ramming; S5. Lift the rammer to a preset height, the rammer automatically unhooks and drops to ram the impact point, measure the elevation of the rammer top, and record the settlement amount of the ram pit; S6. Repeat step S5; S7. Move the rammer to the next ram point and repeat steps S3-S5; S8. Measure the elevation of the site and set out the full compaction reference line; S9. Ram point by point in accordance with the principle of ram impression overlap to complete all the ramming numbers; S10. Ram row by row to complete full compaction, level the site, and measure the elevation of the site.

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