Construction method for controlling inclination angle during driving of front support type grouting steel pipe pile

Abstract

The invention discloses a construction method for controlling the inclination angle during driving of front supporting type grouting steel pipe piles. The construction method comprises the steps that all the steel pipe piles are installed; calculating a first deviation between the inclination angle of each steel pipe pile and a preset angle; calculating a second deviation between the inclination direction of each steel pipe pile and the preset direction; and the steel pipe pile is adjusted according to the first deviation and the second deviation. And the inclination angle and the inclination direction of the steel pipe pile are adjusted according to the first deviation and the second deviation, so that the inclination angle and the inclination direction of the steel pipe pile can meet preset requirements, the side wall of the pit foundation can be supported more effectively, the stability of the whole foundation pit support structure is improved, and lateral movement and collapse of a soil body are prevented.

Description

Technical Field

[0001] The invention discloses a construction method for driving a front-supported grouting steel pipe pile and controlling an inclination angle. Background Art

[0002] In the foundation pit support construction, the front-supported grouting steel pipe piles can more effectively support the retaining structure of the side wall of the foundation pit by controlling their construction inclination angle and inclination direction, prevent lateral movement of the retaining structure and soil collapse, and help improve the stability of the entire support structure, thereby improving construction quality and ensuring the safety of the foundation pit.

[0003] However, currently when driving steel piles, after measuring the inclination angle of the first section of the pile with a protractor, the subsequent construction is often judged based on the experience of the construction workers to see whether the inclination angle and inclination direction meet the requirements, which will lead to the inability to continuously and effectively control the inclination angle of the steel pile, increase the possibility of construction errors, and affect the quality and safety of the project. In addition, under complex geological conditions or special engineering environments, it may be difficult to accurately judge the inclination angle and inclination direction of the steel pile based on experience alone. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the problem in the prior art that when driving steel piles, after measuring the inclination angle of the first section of the pile with a protractor, the subsequent construction is often judged based on the experience of the construction workers to see whether the inclination angle and the inclination direction meet the requirements, which will lead to the inability to continuously and effectively control the inclination angle of the steel pile, increase the possibility of construction errors, and affect the quality and safety of the project. In addition, under complex geological conditions or special engineering environments, it may be difficult to accurately judge the inclination angle and the inclination direction of the steel pile based on experience alone. A construction method for controlling the inclination angle of front-supported grouting steel pipe pile driving is provided.

[0005] The present invention solves the above technical problems through the following technical solutions:

[0006] The positive and progressive effects of the present invention are:

[0007] The invention discloses a construction method for controlling the inclination angle of front-supported grouting steel pipe piles, the construction method comprising:

[0008] Positioning and installing the steel pipe piles;

[0009] Calculating a first deviation between the inclination angle of each of the steel pipe piles and a preset angle;

[0010] Calculating a second deviation between the inclination direction of each of the steel pipe piles and a preset direction;

[0011] The steel pipe pile is adjusted according to the first deviation and the second deviation.

[0012] In this scheme, the above-mentioned form is adopted to adjust the inclination angle and inclination direction of the steel pipe pile according to the first deviation and the second deviation, so that the inclination angle and direction of the steel pipe pile can meet the preset requirements, and can more effectively support the side wall of the pit foundation, thereby improving the stability of the foundation pit retaining structure and preventing lateral movement and collapse of the soil.

[0013] Preferably, the calculating of the first deviation between the inclination angle of each of the steel pipe piles and the preset angle specifically includes:

[0014] Measuring the inclination angle of the steel pipe pile by a protractor;

[0015] The tilt angle is compared with a preset tilt angle to obtain the first deviation.

[0016] In this solution, the above-mentioned structural form is adopted, and the inclination angle of the steel pipe pile can be determined by a protractor, so that the inclination angle of the steel pipe pile can be adjusted according to the measurement result of the protractor.

[0017] Preferably, the bracket device comprises a fixing member, a connecting member, a buffer member and a supporting member, wherein the fixing member is arranged in the installation surface, and the extending direction of the fixing member is parallel to the installation surface, the two ends of the connecting member are respectively connected to the fixing member and the supporting member, the connecting member extends in the vertical direction, one side of the buffer member is connected to the supporting member, and the other side of the buffer member abuts against the steel pipe pile; the angle between the supporting member and the connecting member is complementary to the preset angle between the steel pipe pile and the installation surface, and after the first deviation is obtained by comparing the inclination angle with the preset inclination angle, the construction method further comprises:

[0018] Placing the support device between the mounting surface and the steel pipe pile;

[0019] The steel pipe pile is brought into contact with the surface of the buffer member away from the support member.

[0020] In this solution, the above-mentioned form is adopted, and the buffer is fitted with the steel pipe pile. Under the premise of ensuring that the angle between the support and the connecting member does not change, the inclination angle of the steel pipe pile can be continuously adjusted and controlled by observing the fit tightness of the buffer and the steel pipe and the change in thickness, so that the inclination angle of the steel pipe pile meets the design requirements, and the side wall of the pit foundation can be more effectively supported, thereby improving the stability of the pit retaining structure and preventing the lateral movement and collapse of the soil. In addition, the fixing member is arranged in the installation surface, and the extension direction of the fixing member is parallel to the installation surface, which increases the contact area between the bracket device and the installation surface, which is beneficial to the overall stability of the bracket device, so that the buffer can better fit with the steel pipe pile, which is beneficial to the inclination of the steel pipe pile along the preset angle during piling.

[0021] Preferably, the bracket device also includes a limit member, which is arranged on a side of the support member away from the buffer member. In a projection perpendicular to the extension direction of the support member, at least one end of the limit member extends beyond the support member, and is used to abut against the buffer member to prevent the buffer member from rotating.

[0022] In this solution, the above-mentioned form is adopted to prevent the buffer member from rotating around the support member.

[0023] Preferably, the bracket device further comprises a fastener, wherein the fastener is spirally wound around the buffer component and the limit component along an extension direction of the buffer component to connect the buffer component and the limit component.

[0024] In this solution, the above-mentioned form is adopted to provide a stronger connection force and ensure the stability and reliability of the connection.

[0025] Preferably, calculating the second deviation between the inclination direction of each of the steel pipe piles and the preset direction specifically includes:

[0026] A straight line is extended outwardly through the center of the position where the steel pipe pile is installed on the installation surface; wherein the extension direction of the straight line is the same as the projection direction of the preset extension direction of the steel pipe pile on the installation surface;

[0027] Projecting the steel pipe pile onto the installation surface to obtain a first projection of the steel pipe pile;

[0028] The straight line is compared with the first projection to obtain the second deviation.

[0029] In this solution, the above-mentioned form is adopted, and the steel pipe pile can be easily adjusted in the later stage according to the second deviation, so that the positioning of the inclination direction of the steel pipe pile meets the preset requirements.

[0030] Preferably, projecting the steel pipe pile onto the installation surface to obtain a first projection of the steel pipe pile comprises:

[0031] Draw a standard line on the outer surface of the steel pipe pile, wherein the standard line is parallel to the axis of the steel pipe pile;

[0032] The standard line is projected onto the installation surface to obtain the first projection.

[0033] In this solution, the above form is adopted to facilitate the subsequent comparison of the straight line with the first projection, thereby improving the accuracy of the comparison between the straight line and the first projection.

[0034] Preferably, the construction method further comprises:

[0035] Projecting the steel pipe pile and the straight line onto a vertical plane using a laser alignment instrument;

[0036] The inclination direction of the steel pipe pile is adjusted according to the projection.

[0037] In this solution, the above-mentioned form is adopted to facilitate the adjustment of the inclination direction of the steel pipe piles, so that the inclination direction of the steel pipe piles can meet the preset requirements, reduce construction errors, and improve project quality and safety.

[0038] Preferably, adjusting the inclination direction of the steel pipe pile according to the projection comprises:

[0039] Calculating the deviation between the projection and a preset triangulated alignment area;

[0040] The inclination direction of the steel pipe pile is adjusted according to the deviation until the projection coincides with the preset triangular alignment area.

[0041] In this solution, the above-mentioned form is adopted so that the inclination direction of the steel pipe pile can meet the preset requirements, reduce construction errors, and improve project quality and safety.

[0042] Preferably, projecting the steel pipe pile and the straight line onto a vertical plane comprises:

[0043] Project the standard line and the straight line onto a vertical plane.

[0044] In this solution, the above form is adopted to facilitate the comparison between the straight line and the standard line at a later stage, thereby further improving the accuracy of the comparison between the straight line and the first projection.

[0045] The positive and progressive effects of the present invention are:

[0046] The inclination angle and inclination direction of the steel pipe pile are adjusted according to the first deviation and the second deviation, so that the inclination angle and direction of the steel pipe pile can meet the preset requirements, and can be positioned, installed and controlled more accurately, so as to more effectively support the side wall of the pit foundation, thereby improving the stability of the entire foundation pit support structure and preventing lateral movement and collapse of the soil. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 is a schematic structural diagram of a bracket device according to an embodiment of the present invention;

[0048] Figure 2 A first construction flow chart of controlling the inclination angle of front-supported grouting steel pipe piles according to an embodiment of the present invention;

[0049] Figure 3 This is a third construction flow chart for controlling the inclination angle of front-supported grouting steel pipe piles according to an embodiment of the present invention.

[0050] Figure 4This is a diagram of a construction device for driving a front-supported grouting steel pipe pile to control the inclination angle according to an embodiment of the present invention.

[0051] Description of reference numerals:

[0052] Steel pipe pile 1000

[0053] Laser Alignment Instrument 2000

[0054] Bracket device 100

[0055] Fixing 1

[0056] Connector 2

[0057] Support 3

[0058] Buffer 4 DETAILED DESCRIPTION

[0059] The present invention is further described below by way of examples, but the present invention is not limited to the scope of the examples.

[0060] like Figures 1 to 4 As shown, this embodiment provides a construction method for driving a front-supported grouting steel pipe pile 1000 to control the inclination angle, and the construction method includes:

[0061] Step S1, positioning and installing the steel pipe pile 1000; in specific use, first determine the position of the steel pipe pile 1000 and mark it with white lime to facilitate the later installation of the steel pipe pile 1000.

[0062] Step S2, calculating a first deviation between the inclination angle of each steel pipe pile 1000 and a preset angle;

[0063] Step S3, calculating a second deviation between the inclination direction of each steel pipe pile 1000 and a preset direction;

[0064] Step S4: adjusting the inclination angle and inclination direction of the steel pipe pile 1000 according to the first deviation and the second deviation.

[0065] During specific use, the inclination angle and inclination direction of the steel pipe pile 1000 are adjusted according to the first deviation and the second deviation, so that the inclination angle and direction of the steel pipe pile 1000 can meet the preset requirements, and can more effectively support the side wall of the pit foundation, thereby improving the stability of the entire foundation pit retaining structure and preventing lateral movement and collapse of the soil.

[0066] It should be specifically noted that, in this embodiment, step S2 and step S3 only represent two different steps of construction, and do not represent the order of the steps. In other words, step S2 can be constructed before step S3, or after step S3, or simultaneously with step S3.

[0067] Step S2 includes:

[0068] Step S21, measuring the inclination angle of the steel pipe pile 1000 by a protractor; in the present embodiment, the inclination angle of the steel pipe pile 1000 is measured by a protractor, and in other embodiments, the inclination angle of the steel pipe pile 1000 may also be measured by other measuring tools, and the specific measuring tools are not limited here.

[0069] Step S22: Compare the tilt angle with the preset tilt angle to obtain the first deviation. In specific use, the tilt angle can be subtracted from the preset tilt angle to obtain an absolute value to obtain the first deviation, or the tilt angle can be compared with the preset tilt angle to obtain the first deviation, or the first deviation can be obtained in other forms, and the specific solution method of the first deviation is not limited here.

[0070] like Figure 1 and Figure 4 As shown, the bracket device 100 includes a fixing member 1, a connecting member 2, a buffer member 4 and a supporting member 3. The fixing member 1 is arranged in the installation surface, and the extension direction of the fixing member 1 is parallel to the installation surface. The two ends of the connecting member 2 are respectively connected to the fixing member 1 and the supporting member 3. The connecting member 2 extends in the vertical direction. One side of the buffer member 4 is connected to the supporting member 3, and the other side of the buffer member 4 abuts against the steel pipe pile 1000; the angle between the supporting member 3 and the connecting member 2 is complementary to the preset angle between the steel pipe pile 1000 and the installation surface. After step S22, the construction method also includes

[0071] Step S23, placing the support device 100 between the installation surface and the steel pipe pile 1000; in this embodiment, the installation surface is the plane on which the steel pipe pile 1000 is installed.

[0072] Step S24, abut the steel pipe pile 1000 against the surface of the buffer 4 away from the support 3; in this embodiment, the buffer 4 is a sponge, and in other embodiments, the type of the buffer 4 can be adjusted according to actual needs and is not limited here.

[0073] In specific use, the above-mentioned form is adopted, and the buffer 4 is fitted with the steel pipe pile 1000. Under the premise of ensuring that the angle between the support member 3 and the connector 2 does not change, the inclination angle of the steel pipe pile 1000 can be continuously adjusted and controlled by observing the fit tightness of the buffer 4 and the steel pipe and the change of the thickness compression, so that the inclination angle of the steel pipe pile 1000 meets the design requirements (tight fit, and no detailed change in the compression of the buffer), which can more effectively support the side wall of the pit foundation, thereby improving the stability of the foundation pit retaining structure and preventing the lateral movement and collapse of the soil. In addition, the fixing member 1 is arranged in the installation surface, and the extension direction of the fixing member 1 is parallel to the installation surface, which increases the contact area between the bracket device 100 and the installation surface, thereby facilitating the overall stability of the bracket device 100, so that the buffer 4 can better fit with the steel pipe pile 1000, which is conducive to the inclination of the steel pipe pile 1000 along the preset angle during piling.

[0074] It should be specifically explained that the angle between the support member 3 and the connection member 2 mentioned above and the preset angle between the steel pipe pile 1000 and the installation surface are complementary to each other, which means that the connection member 2 is arranged on the side away from the connection between the steel pipe pile 1000 and the installation surface, and the support member 3 extends from the connection member 2 toward the connection between the steel pipe pile 1000 and the installation surface. In addition, the preset angle is set according to the preset inclination angle of the steel pipe pile 1000, and the specific value is not limited here.

[0075] The bracket device 100 also includes a limit member, which is arranged on a side of the support member 3 away from the buffer member 4. In a projection perpendicular to the extension direction of the support member 3, at least one end of the limit member extends beyond the support member 3 and is used to abut against the buffer member 4, thereby preventing the buffer member 4 from rotating around the support member 3.

[0076] In specific use, there are multiple limiters, and the multiple limiters are arranged at intervals along the extension direction of the buffer member 4, thereby improving the limit strength of the limiter. In addition, in order to further improve the limit strength of the limiter, it is preferred that both ends of the limiter exceed the support member 3 in the projection perpendicular to the extension direction of the support member 3.

[0077] In the present embodiment, the buffer 4 is a sponge, and the thickness of the sponge is 5 cm, which is convenient for observing the fit between the sponge and the steel pipe pile 1000 and the change in the thickness of the sponge during construction, and continuously controlling and adjusting the construction inclination angle. It should be specifically noted that in the present embodiment, the thickness of the sponge is required not to change too much. If there is not a tight fit or too much compression, it indicates that the inclination angle exceeds the preset range. In other embodiments, the type and thickness of the buffer 4 can be adjusted according to actual needs, and are not limited here. In addition, in the present embodiment, the limiter is a short steel bar. In other embodiments, the type of the limiter can be adjusted according to actual needs, and are not limited here.

[0078] The bracket device 100 further includes a fastener, which is spirally wound around the buffer 4 and the stopper along the extension direction of the buffer 4 to connect the buffer 4 and the stopper. The above structure can provide a stronger connection force and ensure the stability and reliability of the connection.

[0079] In this embodiment, the fastener is a wire, and in other embodiments, the fastener may be of other types, which is not limited here. In addition, in this embodiment, when the fixing member 1 fixes the buffer member 4, it is necessary to ensure that the buffer member 4 does not deform, so as to ensure that the thickness direction of the buffer member 4 does not change.

[0080] like Figure 3 As shown, step S3 specifically includes:

[0081] Step S31, extending a straight line outward from the center of the position where the steel pipe pile 1000 is installed on the installation surface; wherein the extension direction of the straight line is the same as the projection direction of the preset extension direction of the steel pipe pile 1000 on the installation surface;

[0082] Step S32, projecting the steel pipe pile 1000 onto the installation surface to obtain a first projection of the steel pipe pile 1000;

[0083] Step S33: Compare the straight line with the first projection to obtain a second deviation. By adopting the above method, the steel pipe pile 1000 can be adjusted according to the second deviation, so that the inclination direction of the steel pipe pile 1000 meets the preset requirements.

[0084] Step S32 includes:

[0085] Step S321, drawing a standard line on the outer surface of the steel pipe pile 1000, wherein the standard line is parallel to the axis of the steel pipe pile 1000;

[0086] Step S322: Project the standard line onto the installation surface to obtain a first projection. The above method facilitates the comparison between the straight line and the first projection at a later stage, thereby improving the accuracy of the comparison between the straight line and the first projection.

[0087] In this embodiment, the construction method further includes:

[0088] Step S101, using the laser alignment instrument 2000 to project the steel pipe pile 1000 and the straight line onto a vertical plane; in this embodiment, the standard line and the straight line are projected onto a vertical plane. The above form is adopted to facilitate the later comparison of the straight line with the standard line, and further improve the accuracy of the comparison between the straight line and the first projection. In addition, in this embodiment, the laser alignment instrument 2000 can be set up at a location with good visibility conditions.

[0089] Step S102, adjusting the tilt direction of the steel pipe pile 1000 according to the projection. The above form facilitates the adjustment of the tilt direction of the steel pipe pile 1000 and performs precise positioning, so that the tilt direction of the steel pipe pile 1000 can meet the preset requirements, reduce construction errors, and improve engineering quality and safety.

[0090] Step S102 includes:

[0091] Step S1021, calculating the deviation between the projection and the preset triangular alignment area;

[0092] Step S1022: adjusting the tilt direction of the steel pipe pile 1000 according to the deviation until the projection coincides with the preset triangular alignment area.

[0093] In actual use, the above-mentioned form is adopted so that the inclination direction of the steel pipe pile 1000 can meet the preset requirements, reduce construction errors, and improve project quality and safety.

[0094] Although the specific embodiments of the present invention are described above, it should be understood by those skilled in the art that this is only for illustration and the protection scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. A construction method for controlling the inclination angle of front-supported grouting steel pipe piles, characterized in that: The construction method comprises: Positioning and installing the steel pipe piles; Calculating a first deviation between the inclination angle of each of the steel pipe piles and a preset angle; Calculating a second deviation between the inclination direction of each of the steel pipe piles and a preset direction; The steel pipe pile is adjusted according to the first deviation and the second deviation.

2. The construction method for controlling the inclination angle of front-supported grouting steel pipe piles as claimed in claim 1, characterized in that: The calculating of the first deviation between the inclination angle of each of the steel pipe piles and the preset angle specifically includes: Measuring the inclination angle of the steel pipe pile by a protractor; The tilt angle is compared with a preset tilt angle to obtain the first deviation.

3. The construction method for controlling the inclination angle of front-supported grouting steel pipe piles as claimed in claim 2, characterized in that: The bracket device includes a fixing member, a connecting member, a buffer member and a supporting member, wherein the fixing member is arranged in the installation surface, and the extending direction of the fixing member is parallel to the installation surface, the two ends of the connecting member are respectively connected to the fixing member and the supporting member, the connecting member extends in the vertical direction, one side of the buffer member is connected to the supporting member, and the other side of the buffer member abuts against the steel pipe pile; the angle between the supporting member and the connecting member is complementary to the preset angle between the steel pipe pile and the installation surface, and after the first deviation is obtained by comparing the inclination angle with the preset inclination angle, the construction method further includes: Placing the support device between the mounting surface and the steel pipe pile; The steel pipe pile is brought into contact with the surface of the buffer member away from the support member.

4. The construction method for controlling the inclination angle of front-supported grouting steel pipe piles as claimed in claim 3, characterized in that: The bracket device also includes a limit member, which is arranged on a side of the support member away from the buffer member. In a projection perpendicular to the extension direction of the support member, at least one end of the limit member exceeds the support member and is used to abut against the buffer member to prevent the buffer member from rotating.

5. The construction method for controlling the inclination angle of front-supported grouting steel pipe piles as claimed in claim 3, characterized in that: The bracket device also includes a fastener, which is spirally wound around the buffer component and the limit component along the extension direction of the buffer component to connect the buffer component and the limit component.

6. The construction method for controlling the inclination angle of front-supported grouting steel pipe piles as claimed in claim 1, characterized in that: Calculating the second deviation between the inclination direction of each of the steel pipe piles and the preset direction specifically includes: A straight line is extended outwardly through the center of the position where the steel pipe pile is installed on the installation surface; wherein the extension direction of the straight line is the same as the projection direction of the preset extension direction of the steel pipe pile on the installation surface; Projecting the steel pipe pile onto the installation surface to obtain a first projection of the steel pipe pile; The second deviation is obtained by comparing the straight line with the first projection.

7. The construction method for controlling the inclination angle of front-supported grouting steel pipe piles as claimed in claim 6, characterized in that: Projecting the steel pipe pile onto the installation surface to obtain a first projection of the steel pipe pile includes: Drawing a standard line on the outer surface of the steel pipe pile, wherein the standard line is parallel to the axis of the steel pipe pile; The standard line is projected onto the installation surface to obtain the first projection.

8. The construction method for controlling the inclination angle of front-supported grouting steel pipe piles as claimed in claim 7, characterized in that: The construction method also includes: Projecting the steel pipe pile and the straight line onto a vertical plane using a laser alignment instrument; The inclination direction of the steel pipe pile is adjusted according to the projection.

9. The construction method for controlling the inclination angle of front-supported grouting steel pipe piles as claimed in claim 8, characterized in that: The step of adjusting the inclination direction of the steel pipe pile according to the projection comprises: Calculating the deviation between the projection and a preset triangulated alignment area; The inclination direction of the steel pipe pile is adjusted according to the deviation until the projection coincides with the preset triangular alignment area.

10. The construction method for controlling the inclination angle of front-supported grouting steel pipe piles according to claim 8, characterized in that: The projecting of the steel pipe pile and the straight line onto a vertical plane comprises: Project the standard line and the straight line onto a vertical plane.

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