Pile top height monitoring device for grouting construction

Abstract

The utility model discloses a pile top height monitoring device for grouting construction, which comprises a support plate, the support plate fixedly covers the opening of a pile hole, the middle part of the support plate is provided with a positioning groove for providing radial abdication for a grouting pipe, and the support plate on the two sides of the positioning groove is respectively and vertically connected with a slurry surface inspection rod and a liquid surface inspection rod in a sliding and penetrating manner; the bottom ends of the slurry surface inspection rod and the liquid surface inspection rod vertically extend into the pile hole, and safety monitoring gaps are reserved between the circumferential outer walls of the slurry surface inspection rod and the liquid surface inspection rod and the inner wall of the pile hole and between the circumferential outer walls of the slurry surface inspection rod and the liquid surface inspection rod and the outer wall of the grouting pipe; a pushing plate for increasing the contact area of the slurry surface is fixedly arranged at the bottom end of the slurry surface inspection rod; and a hollow floating ball for increasing buoyancy is fixedly arranged at the bottom end of the liquid level inspection rod. The device is not interfered by sight of suspension at the top of slurry, effectively judges the height of the liquid level of solid slurry particles at the lower part of the slurry, is convenient for constructors to effectively control the pile top height, and is simple in structure and easy to implement.

Description

Technical Field

[0001] The utility model relates to the technical field of grouting construction, in particular to a pile top height monitoring device for grouting construction. Background Technique

[0002] Currently, during the pile hole grouting construction, the pile top height, that is, the height of the grout after grouting, is strictly required by existing standards. However, it is found in the grouting construction that due to the influence of factors such as the composition of the grout, the grouting construction time, the environmental temperature and humidity, and the soil composition of the pile hole, the grout poured into the pile hole has a layered situation, that is, the lower layer of the grout is solid slurry particles, and the upper layer of the grout is clear / turbid liquid. Therefore, it is difficult for construction workers to measure the top height of the solid slurry particles of the grout from the top of the pile hole downwards.

[0003] Therefore, in the existing grouting construction, usually, appropriate over-grouting is determined according to the experience of construction workers to avoid the problem of insufficient pile top height after the grout solidifies. However, it is difficult to ensure uniform quality with manual experience judgment, the pile top heights are uneven, the construction quality is poor, and material waste is serious.

[0004] To sum up, how to solve the problem of the sight blockage of the clear / turbid liquid suspended on the upper part of the grout for construction workers, and facilitate the construction workers to accurately judge the stacking height of the solid slurry particles in the grout, that is, the pile top height after the grout solidifies, has become a technical problem urgently to be solved by those skilled in the art. Content of the Utility Model

[0005] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a pile top height monitoring device for grouting construction. This device is not interfered by the sight of the suspension liquid at the top of the grout, can effectively determine the height of the liquid surface of the solid slurry particles at the lower part of the grout, facilitates the construction workers to effectively control the pile top height, and has a simple structure and is easy to implement.

[0006] The purpose of the utility model is achieved by the following technical solutions:

[0007] A pile top height monitoring device for grouting construction of the utility model includes a support plate, which is fixedly covered at the opening of the pile hole. A positioning groove for providing radial clearance for the grouting pipe is opened in the middle of the support plate, and a slurry surface inspection rod and a liquid surface inspection rod are respectively vertically slidably penetrated and connected through the support plate on both sides of the positioning groove; the bottom ends of the slurry surface inspection rod and the liquid surface inspection rod both vertically extend into the pile hole, and a safety monitoring clearance is left between the outer walls of the slurry surface inspection rod and the liquid surface inspection rod and the inner wall of the pile hole and the outer wall of the grouting pipe; a top push plate for increasing the slurry surface contact area is fixedly arranged at the bottom end of the slurry surface inspection rod; a hollow floating ball for increasing buoyancy is fixedly arranged at the bottom end of the liquid surface inspection rod.

[0008] Preferably, sliding seats are fixedly arranged on the support plates on both sides of the positioning groove, and the slurry surface inspection rod and the liquid surface inspection rod are vertically penetrated and slidably guided and supported inside the sliding seats.

[0009] Preferably, the pushing plate is a circular plate or a crescent-shaped plate, and the upward supporting force is provided by the solid slurry deposited and surging below the slurry liquid level.

[0010] Preferably, the hollow floating ball at the bottom end of the liquid level inspection rod is provided with an upward buoyancy force by the clear liquid level of the slurry in the pile hole.

[0011] Preferably, both the slurry surface inspection rod and the liquid level inspection rod are made of lightweight PVC pipes, and a scale is coated on the outer circumferential walls of the slurry surface inspection rod and the liquid level inspection rod.

[0012] The advantages and technical effects of the present utility model are as follows:

[0013] A pile top height monitoring device for grouting construction of the present utility model first provides a vertical sliding support at the pile hole for the slurry surface inspection rod and the liquid level inspection rod through the support plate, and controls the horizontal spacing between the slurry surface inspection rod, the liquid level inspection rod, the inner wall of the pile hole and the outer wall of the grouting pipe through the support plate to prevent the slurry surface inspection rod and the liquid level inspection rod from jamming and failing; the rising amplitudes of the two are identified through the scales on the slurry surface inspection rod and the liquid level inspection rod to respectively determine the liquid levels of the top clear / turbid liquid and the liquid level of the solid particles of the slurry after the slurry is stratified, and the difference between the two is the depth of the top clear / turbid liquid after the slurry is stratified. Description of the Drawings

[0014] Figure 1 is a top view of the present utility model;

[0015] Figure 2 is a side cross-sectional view of the present utility model (non-grouting posture);

[0016] Figure 3 is a side cross-sectional view of the present utility model (grouting height measurement posture);

[0017] In the figure: 1 - support plate; 2 - pile hole; 3 - grouting pipe; 4 - positioning groove; 5 - sliding seat; 6 - liquid level inspection rod; 7 - slurry surface inspection rod; 8 - scale; 9 - safety monitoring gap; 10 - hollow floating ball; 11 - pushing plate; 12 - clear / turbid liquid; 13 - solid slurry particles; Detailed Description of the Preferred Embodiments

[0018] In order to further understand the content, features and effects of the present utility model, the following embodiments are given and described in detail in conjunction with the accompanying drawings. It should be noted that this embodiment is descriptive and not restrictive, and the protection scope of the present utility model cannot be limited thereby.

[0019] A device for monitoring the pile top height in grouting construction of the utility model includes a support plate 1, which is fixedly covered at the opening of the pile hole 2. A positioning groove 4 for radially accommodating the grouting pipe 3 is provided in the middle of the support plate, and a slurry surface inspection rod 7 and a liquid level inspection rod 6 are vertically slidably penetrated and connected to both sides of the positioning groove on the support plate; the bottom ends of the slurry surface inspection rod and the liquid level inspection rod both vertically extend into the pile hole, and a safety monitoring gap 9 is reserved between the outer walls of the slurry surface inspection rod and the liquid level inspection rod and the inner wall of the pile hole and the outer wall of the grouting pipe; a top push plate 11 for increasing the slurry surface contact area is fixedly provided at the bottom end of the slurry surface inspection rod; a hollow floating ball 10 for increasing buoyancy is fixedly provided at the bottom end of the liquid level inspection rod.

[0020] Preferably, sliding seats 5 are fixedly provided on both sides of the positioning groove on the support plate, and the slurry surface inspection rod and the liquid level inspection rod are vertically penetrated and slidably supported in the sliding seats.

[0021] Preferably, the top push plate is a circular plate or a crescent-shaped plate, and the upward pushing force is provided by the solid slurry deposited and surging below the slurry liquid surface.

[0022] Preferably, the upward buoyancy of the hollow floating ball at the bottom end of the liquid level inspection rod is provided by the clear liquid level of the slurry in the pile hole.

[0023] Preferably, both the slurry surface inspection rod and the liquid level inspection rod are made of lightweight PVC pipes, and a scale 8 is coated on the outer walls of the slurry surface inspection rod and the liquid level inspection rod.

[0024] To more clearly illustrate the specific usage mode of the utility model, an example is provided below:

[0025] For a device for monitoring the pile top height in grouting construction of the utility model, during the construction process, first insert the grouting pipe into the pre-drilled pile hole to a predetermined position, and then fixedly install the support plate on the ground at the top of the pile hole or on the steel structure supported at the top of the pile hole. During the installation of the support plate, the liquid level inspection rod and the slurry surface inspection rod Figure 2 naturally hang down to the limit position as shown (the bottom end penetration depths are basically the same), and the positioning groove of the support plate is radially sleeved outside the grouting pipe for positioning.

[0026] During the grouting process, the clear / turbid liquid level at the top of the slurry first contacts the top push plate and the hollow floating ball. At this time, the buoyancy conducted by the clear / turbid liquid to the hollow floating ball offsets the gravity of the liquid level inspection rod and the hollow floating ball, and then drives the liquid level inspection rod to rise, serving as a warning that the grouting is about to reach the required level. At this time, the staff should reduce the grouting speed to avoid over-grouting.

[0027] When the solid slurry particle level of the slurry contacts the top push plate, it will push the entire slurry surface inspection rod upward. As shown in Figure 3 , at this time, the staff can identify the pile top height according to the reading on the scale of the slurry surface inspection rod.

[0028] Finally, preferably, for the parts not described in detail in the present utility model, mature products and mature technical means in the prior art are adopted.

[0029] It should be understood that those skilled in the art can make improvements or changes according to the above description, and all such improvements and changes should fall within the protection scope of the appended claims of the present utility model.

Claims

1. A pile top height monitoring device for grouting construction, characterized in that: It includes a bracket plate, which is fixedly covered at the opening of the pile hole. A positioning groove is opened in the middle of the bracket plate to provide radial clearance for the grouting pipe, and the bracket plates on both sides of the positioning groove are respectively vertically slid and penetrated to connect the slurry surface inspection rod and the liquid level inspection rod; the bottom ends of the slurry surface inspection rod and the liquid level inspection rod are vertically extended into the pile hole, and a safety monitoring gap is left between the circumferential outer walls of the slurry surface inspection rod and the liquid level inspection rod and the inner wall of the pile hole and the outer wall of the grouting pipe; the bottom end of the slurry surface inspection rod is fixedly provided with a push plate to increase the contact area of ​​the slurry surface; the bottom end of the liquid level inspection rod is fixedly provided with a hollow float to increase the buoyancy.

2. The pile top height monitoring device for grouting construction according to claim 1 is characterized in that: Slide seats are fixedly arranged on the bracket plates on both sides of the positioning groove, and the interior of the slide seat vertically penetrates and slides to guide and support the slurry surface inspection rod and the liquid surface inspection rod.

3. The pile top height monitoring device for grouting construction according to claim 1 is characterized in that: The push plate is a circular plate or a crescent-shaped plate, and the push plate is provided with an upward push force by the solid slurry deposited and surging below the slurry liquid surface.

4. The pile top height monitoring device for grouting construction according to claim 1 is characterized in that: The hollow floating ball at the bottom end of the liquid level inspection rod is provided with rising buoyancy by the clear liquid level of the slurry in the pile hole.

5. The pile top height monitoring device for grouting construction according to claim 1 is characterized in that: The slurry surface inspection rod and the liquid level inspection rod are both made of lightweight PVC pipes, and scales are coated on the circumferential outer walls of the slurry surface inspection rod and the liquid level inspection rod.

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