Combined rammer for reinforcing shallow soft soil foundation

Abstract

The utility model provides a combined rammer for reinforcing a shallow soft soil foundation. The combined rammer comprises a rammer body, a rammer piece, a rammer cover, a limiting rod and a nut. The multiple limiting rods are circumferentially distributed at the top of the rammer body at equal intervals. The rammer piece is installed on the top of the rammer body and located in the space defined by the limiting rods. A positioning groove corresponding to the limiting rod is formed in the outer wall of the rammer piece; the hammer cover is arranged at the top of the rammer piece, a mounting hole corresponding to the limiting rod is formed in the hammer cover, and the hammer cover is mounted on the limiting rod; the nut is installed on the limiting rod, located above the hammer cover and used for pressing the hammer cover. Due to the design of the combined rammer piece, transportation is facilitated, weight balancing can be conveniently carried out according to different ramming energy, and various requirements are met.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of dynamic consolidation construction, and particularly relates to a combined rammer for reinforcing shallow soft soil foundation. BACKGROUND

[0002] Dynamic consolidation is a kind of ground consolidation technology, also known as dynamic consolidation method or dynamic consolidation method. Dynamic consolidation method is to drop heavy hammer (usually 100-400KN, and the maximum can reach 2000KN) from high place (the drop distance is usually 6-40m), and impact force and dynamic stress are given to the foundation, so that the strength of the foundation soil is improved and the compressibility is reduced.

[0003] The rammer is a kind of heavy hammer for ground consolidation, which is usually composed of a steel plate shell internally welded with a framework and then filled with concrete. Some rammers are combined rammers in which the steel plate can be temporarily assembled on the concrete hammer. The bottom surface of the rammer is generally circular or square, and the circular shape is widely used due to its flexibility, convenient positioning and good coincidence.

[0004] With the rapid development of infrastructure construction, especially in coastal and inland river and lake areas, it is often necessary to build highway, railway, bridge, water conservancy, house and other project engineering on soft soil foundation, so that the reinforcement treatment of soft soil foundation becomes an important problem. The reinforcement of soft soil foundation is very strict in terms of ramming factors, therefore, the combined rammer for reinforcing shallow soft soil foundation further solves the problems of large radial displacement of the existing rammer for reinforcing soft soil foundation, and the innovation of the combined hammer method ground treatment technology lies in that it combines the technical advantages of traditional dynamic consolidation method and new type column hammer dynamic consolidation method, and achieves medium or even high energy level ramming effect through small ramming energy.

[0005] Therefore, there is a need for a combined rammer for reinforcing shallow soft soil foundation to improve some existing problems. UTILITY MODEL CONTENTS

[0006] The utility model discloses in order to solve the insufficient of prior art, provide a kind of combined rammer for reinforcing shallow soft soil foundation, the device not only can effectively reinforce soft soil foundation, and can be counterweighted according to different ramming needs.

[0007] The utility model discloses the following technical solutions are realized:

[0008] A combined rammer for reinforcing shallow soft soil foundation, including rammer body, rammer piece, hammer cover, limit rod and nut;

[0009] The limit rod is vertically fixed on the top of the rammer body, and the number of limit rods is multiple, which are distributed on the top of the rammer body in a circle with equal intervals.

[0010] The rammer piece is installed on the top of the rammer body and located in the space surrounded by the limiting rods; the outer wall of the rammer piece is provided with positioning grooves corresponding to the limiting rods;

[0011] The hammer cover is provided on the top of the rammer piece, the diameter of the hammer cover is larger than that of the rammer piece, the hammer cover is provided with mounting holes corresponding to the limiting rods, and the hammer cover is installed on the limiting rods; the nut is installed on the limiting rods and located above the hammer cover, and is used for pressing the hammer cover.

[0012] In the above technical solution, the number of limiting rods is 3-6.

[0013] In the above technical solution, the rammer body includes a cylindrical portion with equal diameter at the bottom and a conical portion with decreasing diameter from bottom to top at the upper part.

[0014] In the above technical solution, a plurality of exhaust holes are provided on the rammer body, and the air current generated during ramming can be discharged through the exhaust holes to prevent stones from splashing.

[0015] In the above technical solution, the number of rammer pieces installed on the top of the rammer body can be single or multiple, and the specific number can be adjusted according to actual needs.

[0016] In the above technical solution, an ear is provided on the hammer cover for connecting a lifting rope.

[0017] The advantages and beneficial effects of the utility model are as follows:

[0018] 1. The combined rammer piece design is beneficial to transportation, and the counterweight can be adjusted according to different ramming capacity to meet various needs.

[0019] 2. The side surface of the rammer body does not contact the soft soil, further reducing the possibility of the rammer.

[0020] 3. The hammer bottom of the rammer body has a certain height of the cylindrical portion with equal diameter, which limits the radial movement of the soft soil in the ramming range, and the soft soil at the bottom of the cylindrical portion has a certain ramming effect on the soft soil at the lower layer. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is the overall structure diagram of the combined rammer for reinforcing the shallow soft soil foundation.

[0022] Figure 2 It is a top view of the combined rammer for reinforcing the shallow soft soil foundation.

[0023] Figure 3 It is a schematic view of the rammer piece.

[0024] Figure 4 It is a schematic view of the hammer cover.

[0025] Other related drawings can be obtained by those of ordinary skill in the art without creative effort based on the above drawings. DETAILED DESCRIPTION

[0026] In order to make the person skilled in the art better understand the technical scheme of the present application, the technical scheme of the present application will be further described below in combination with specific embodiments.

[0027] The present embodiment provides a combined rammer for reinforcing shallow soft soil foundation, which comprises a rammer body 1, rammer pieces 7, a hammer cover 2, limiting rods 5 and nuts 8.

[0028] The limiting rods 5 are vertically fixedly arranged on the top of the rammer body 1, and the number of the limiting rods 5 is multiple, preferably 4, which are circumferentially and equally spaced on the top of the rammer body 1.

[0029] The rammer pieces 7 are installed on the top of the rammer body 1 and located in the space surrounded by the limiting rods 5; the outer wall of the rammer piece 7 is provided with a positioning groove 7.1 corresponding to the limiting rod 5, and when assembled, the positioning groove 7.1 of the rammer piece 7 is opposite to the limiting rod 5, and then the rammer piece 7 is placed into the space surrounded by the limiting rod 5, so that the limiting rod 5 plays a positioning role on the rammer piece 7, which can limit the radial movement and axial rotation of the rammer piece 7. Further, the number of the rammer pieces 7 installed on the top of the rammer body 1 can be single or multiple, and the specific number can be adjusted according to actual needs.

[0030] The hammer cover 2 is arranged on the top of the rammer piece 7, and the diameter of the hammer cover 2 is greater than that of the rammer piece 7; the hammer cover 2 is provided with a mounting hole 2.1 corresponding to the limiting rod 5, so that the hammer cover 2 is installed on the limiting rod 5. The hammer cover 2 is provided with an ear 3 for connecting a lifting rope.

[0031] The nut 8 is installed on the limiting rod 5 and located above the hammer cover 2, which is used to press the hammer cover 2, so that the hammer cover 2 presses the rammer piece 7.

[0032] Further, the rammer body 1 comprises a bottom equal-diameter cylindrical portion 1.1 and an upper taper portion 1.2 with decreasing diameter from bottom to top. In this way, the side surface of the taper portion 1.2 of the rammer body 1 is not in contact with the soft soil, which can effectively reduce the adsorption force of the soil body and also reduce the possibility of sinking the rammer. Such shape setting of the center of gravity is low, and it is not easy to deviate the rammer.

[0033] A plurality of exhaust holes 4 are arranged on the rammer body 1, and the air waves generated at the bottom of the rammer body 1 during ramming can be discharged through the exhaust holes 4, preventing stones from splashing.

[0034] The above has made exemplary description to the utility model, should indicate is, in not departing from the core case of the utility model, any simple deformation, modification or other field technical personnel can not spend the equivalent replacement of creative labor falls into the protection scope of the utility model.

Claims

1. A combined rammer for reinforcing a shallow soft soil foundation, characterized by: The tamper body, the tamper blade, the hammer cover, the limiting rod and the nut are included. The limiting rods are vertically fixed on the top of the tamper body, and the number of the limiting rods is multiple, which are equally spaced on the top of the tamper body. The tamper blade is installed on the top of the tamper body and located in the space surrounded by the limiting rods. The hammer cover is installed on the top of the tamper blade, and the diameter of the hammer cover is larger than that of the tamper blade.

2. The combined rammer for reinforcing a shallow soft soil foundation according to claim 1, characterized by: The number of the limiting rods is 3-6.

3. The combined rammer for reinforcing a shallow soft soil foundation according to claim 1, characterized by: The tamper body includes a cylindrical part with equal diameter at the bottom and a conical part with decreasing diameter from bottom to top at the upper part.

4. The combined rammer for reinforcing a shallow soft soil foundation according to claim 1, wherein: The tamper body is provided with multiple exhaust holes.

5. The combined rammer for reinforcing a shallow soft soil foundation according to claim 1, wherein: The number of the tamper blades installed on the top of the tamper body is greater than or equal to 1.

6. The combined rammer for reinforcing a shallow soft soil foundation according to claim 1, wherein: The hammer cover is provided with an ear for connecting a lifting rope.

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