Measuring device for compaction settlement

Abstract

The invention provides a compaction settlement measuring device. The compaction settlement measuring device comprises a level gauge and a scale, the ruler comprises a vertical rod with scales, and the vertical rod vertically stands on the back face of the rammer. According to the rammer, the scale is fixedly arranged on the back face of the rammer, when the rammer puns the ground, the height of the ground can be measured through the level gauge, and the ramming settlement can be obtained by comparing the height with the height measured in advance.

Description

Technical Field

[0001] The invention relates to a device for measuring tamping amount. Background Art

[0002] Dynamic consolidation is also known as dynamic consolidation. It is a foundation treatment method in which the rammer is repeatedly raised to a high place and allowed to fall freely, giving the foundation impact and vibration energy to compact the foundation soil.

[0003] Dynamic compaction is a convenient and economical foundation treatment process suitable for treating gravel, sand, unsaturated fine-grained soil, collapsible loess, plain fill, and mixed fill. It boasts simple operation, significant reinforcement results, fast construction speed, and low construction costs. It is currently widely used for foundation treatment in engineering sites such as airports, roads, ports, storage yards, storage tanks, warehouses, factories, and housing construction.

[0004] According to the current "Technical Specifications for Building Foundation Treatment" and "Technical Regulations for Dynamic Compaction Foundation Treatment," it is necessary to measure the total tamping sinkage and the average tamping sinkage of the last two strikes. Therefore, measuring tamping sinkage is the key and standard for dynamic compaction construction process control.

[0005] The instrument commonly used for measuring tamping sinking volume is a level. During the measurement process, a ruler needs to be manually placed on the tamping hammer for measurement. The following problems exist during the operation: (1) Flying stones often occur during the tamping construction process, which can easily injure people. There are great safety hazards when manually holding a ruler each time, and the workers are unsafe. (2) The person holding the ruler needs to stop the hammer and hold the ruler each time for measurement. After the measurement is completed, it is necessary to wait until the person is evacuated to a safe area before continuing the construction, resulting in low work efficiency and discontinuous construction. (3) The amount of reciprocating motion of the person holding the ruler is large, which consumes a lot of physical strength. During the hot season, safety incidents such as heatstroke are prone to occur. (4) The point where the ruler is placed changes each time, and the elevation measurement benchmark is inconsistent, resulting in large data measurement errors. Summary of the Invention

[0006] In order to solve the problems of long time, labor consumption and safety in the current tamping amount measurement, the present invention provides a tamping amount measuring device, in which a vertical ruler is fixed on the flat surface of the back of the tamping hammer.

[0007] The technical solution for achieving the technical purpose of the present invention is: a tamping amount measuring device, including a level and a ruler; the ruler includes a vertical pole with a scale, and the vertical pole is vertically erected on the back of the tamping hammer.

[0008] Furthermore, in the above-mentioned tamping amount measuring device: the vertical rod is a steel pipe with a diameter of 50 mm, a wall thickness of 3.5 mm and a length of 30 cm, and the surface of the steel pipe is engraved with scales.

[0009] Furthermore, in the above-mentioned tamping amount measuring device: a connecting steel plate for welding and fixing to the tamping hammer is provided at the bottom of the steel pipe.

[0010] Furthermore, in the above-mentioned tamping amount measuring device: a threaded portion connected to an extension steel pipe is provided on the top of the steel pipe; the extension steel pipe has a length of 50-100 cm and a scale is engraved on its surface.

[0011] Furthermore, in the above-mentioned tamping amount measuring device: the vertical rod includes at least two steel pipes arranged on the back of the rammer; when the level instrument is measured, all the steel pipes are measured and the average value is taken.

[0012] In the present invention, the scale is fixedly arranged on the back of the rammer. When the rammer tamps the ground, the height of the ground can be measured by a level meter, and the tamping amount can be obtained by comparing it with the height measured in advance.

[0013] The present invention will be described in more detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Attachment Figure 1 Schematic diagram of a steel pipe used as a vertical pole in Example 1 of the present invention;

[0015] Attachment Figure 2 Schematic diagram of a steel pipe used as a vertical pole in Example 1 of the present invention;

[0016] Attachment Figure 3 This is a schematic diagram of a steel pipe extension section used in Example 1 of the present invention;

[0017] Attachment Figure 4 This is a schematic diagram of measuring the tamping amount in Example 1 of the present invention. DETAILED DESCRIPTION

[0018] This embodiment is a tamping amount measuring device, such as Figure 1 、 2 3: The device for measuring the tamping amount when the foundation is being leveled by the dynamic tamping method is the same as the measuring device currently used for measuring the tamping amount. It also uses a level 6 to measure the scale perpendicular to the tamped foundation, but the scale is fixed vertically to the back of the tamping hammer. Figure 4As shown, the back of the rammer used in this embodiment has a horizontal surface, and the scale is installed vertically on the horizontal surface to form a vertical pole. In practice, the rammer 6 is generally a steel hammer, so the vertical pole can also be used as a steel pipe. The vertical pole is a section of steel pipe 1 with a diameter of 50mm, a wall thickness of 3.5mm and a length of 30cm. The surface of the steel pipe 1 is engraved with scales. A connecting steel plate 2 for welding and fixing to the rammer 5 is provided at the bottom of the steel pipe 1. The connecting steel plate 2 is welded to the horizontal surface on the back of the rammer. A sleeve thread 3 connected to the extension steel pipe 4 is provided at the top of the steel pipe 1; the extension steel pipe 4 is between 50-100cm long, and its surface is engraved with scales. In some other embodiments, the vertical pole includes at least two steel pipes 1 arranged on the back of the rammer 5; when the level 6 is measured, all the steel pipes 1 are measured and the average value is taken.

[0019] The main solutions of this embodiment are:

[0020] 1) Weld three measuring devices onto the tamper 5 to replace the ruler.

[0021] 2) The measuring device is made of a 50mm diameter, 3.5mm thick steel pipe. It is divided into two parts: the first section is a welded fixed section and an extension section.

[0022] 3) The first welded fixed section is 30cm long. A connecting steel plate is installed at the bottom of the steel pipe for welding and fixing to the rammer. The top is threaded for connection to the extension section.

[0023] 4) The length of the extension steel pipe is 50cm~100cm, which can be processed as needed. Both ends of the steel pipe are threaded for connection with the fixed section and the extension.

[0024] 5) Paste scale paper or paint scale on the pipe body to measure the amount of tamping.

[0025] 6) During the dynamic compaction construction process, the depth of the ramming pit can be extended at any time depending on the depth.

[0026] The effects and benefits of this embodiment are as follows:

[0027] 1) During the actual construction process, there is no need for manual measurement with a ruler, and the measuring device can be read directly through the level, saving one labor;

[0028] 2) Solved the problem of flying rocks easily injuring workers, greatly improving construction safety;

[0029] 3) Since there is no need for manual measurement, the measurement time is greatly reduced, which improves the construction efficiency;

[0030] 4) The measuring point does not change each time. Three such steel pipes are welded on the back of the rammer. While ensuring that all measuring angles can be measured, the tamping amount can be calculated by the mean method when the rammer tilts, thereby improving the measurement accuracy.

Claims

1. A device for measuring tamping amount, comprising a level (6) and a ruler; characterized in that: The scale comprises a vertical rod provided with a scale, and the vertical rod is vertically erected on the back of the rammer (5).

2. The tamping amount measuring device according to claim 1, characterized in that: The vertical pole is a steel pipe (1) with a diameter of 50 mm, a wall thickness of 3.5 mm and a length of 30 cm. The surface of the steel pipe (1) is engraved with scales.

3. The tamping amount measuring device according to claim 2, characterized in that: A connecting steel plate (2) for welding and fixing to the rammer (5) is provided at the bottom of the steel pipe (1).

4. The tamping amount measuring device according to claim 2, characterized in that: The top of the steel pipe (1) is provided with a sleeve thread (3) connected to an extension steel pipe (4); the extension steel pipe (4) has a length of 50-100 cm and a scale is engraved on its surface.

5. The tamping amount measuring device according to claim 2, 3 or 4, characterized in that: The vertical pole comprises at least two steel pipes (1) arranged on the back of the rammer (5); when the level (6) is measured, all the steel pipes (1) are measured and an average value is obtained.

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