阅读说明：本技术 一种脉冲桩基扩底施工方法及装置 (Pulse pile foundation bottom expanding construction method and device ) 是由 徐鹏 于 2019-12-17 设计创作，主要内容包括：本发明提供的一种脉冲桩基扩底施工方法,包括核查地质资料,结合设计参数,选择合适的成孔施工机具机械和施工方法；平整场地,清除地上障碍物,标记处理场地范围内的地下构造物及管线,保持场地平整；测量放线,标定住桩基中心位置；利用选择的施工机具机械和施工方法成原孔；打好原孔后下放脉冲桩基扩底施工装置到原孔底部,利用冲击波击打孔底四周,直到打完形成底部扩大的桩基；填孔形成桩基。本发明方法和装置,施工方法简单,操作方便,施工成本低廉,施工效率高,设备简单,运输容易,打成的基桩抗震级别高,抗沉降能力强,能够适应各种地质环境,尤其在高层和超高层等承重较大的建筑中适用作用更加明显,在建筑领域具有广泛的适用性。(The invention provides a pulse pile foundation base expansion construction method, which comprises the steps of checking geological data, combining design parameters, and selecting proper pore-forming construction machine machinery and a construction method; leveling the field, clearing the above-ground obstacles, marking underground structures and pipelines within the range of the treatment field, and keeping the field flat; measuring and setting out, and calibrating the center position of the pile foundation; forming an original hole by using the selected construction machine and the selected construction method; putting a pulse pile foundation bottom expanding construction device to the bottom of the original hole after the original hole is drilled, and impacting the periphery of the drilled bottom by using shock waves until the pile foundation with the expanded bottom is formed after the drilling is finished; and filling holes to form pile foundations. The method and the device have the advantages of simple construction method, convenient operation, low construction cost, high construction efficiency, simple equipment, easy transportation, high earthquake resistance level of the driven foundation pile and strong anti-settling capacity, can adapt to various geological environments, particularly have more obvious application effect in high-rise and super high-rise buildings with larger bearing capacity, and have wide applicability in the field of buildings.)

1. The pulse pile foundation bottom expanding construction method is characterized by comprising the following steps of:

(1) checking geological data, and selecting proper hole forming construction machine machinery and construction methods by combining design parameters;

(2) leveling the field, clearing the above-ground obstacles, marking underground structures and pipelines within the range of the treatment field, and keeping the field flat;

(3) measuring and setting out, and calibrating the center position of the pile foundation;

(4) forming an original hole by applying the construction machine and the construction method selected in the step (1);

(5) putting a pulse pile foundation bottom expanding construction device to the bottom of the original hole after the original hole is punched, beating and rotating the periphery of the punched hole by using shock waves until the pile foundation with the expanded bottom is formed after beating;

(6) and filling holes to form pile foundations.

2. The method for constructing the pulse pile foundation under-reamed according to claim 1, wherein the hole-forming construction tool is a mechanical crawler-type rotary drilling rig or a positive and negative circulation drilling rig.

3. The method as claimed in claim 1, wherein the pulse pile foundation under-reamed construction apparatus strikes the rock and soil layer around the pile bottom with shock waves to form an enlarged bottom pile foundation having an inverted T-shaped cross-section with the original hole.

4. The method of claim 1, wherein the filling of the hole is performed by placing the cage and then pouring concrete.

5. The pulse pile foundation base expansion construction method according to claim 1, wherein the hole forming construction method in the step (1) is dry hole drilling or slurry circulation drilling.

6. The utility model provides a pulse pile foundation expands end construction equipment which characterized in that, the device includes constant current power supply, energy storage capacitor and energy converter, constant current power supply and energy storage capacitor electric connection, energy storage capacitor and energy converter are connected.

7. The apparatus according to claim 6, wherein the energy storage capacitor has a coaxial structure, a metal rod is disposed inside the energy storage capacitor, a metal pipe is disposed outside the energy storage capacitor, an insulating layer is disposed outside the metal rod, and a support is disposed between the insulating layer and the metal pipe.

8. The apparatus according to claim 6, wherein the energy converter comprises a ground electrode and a high voltage electrode, a third insulating layer is disposed outside the high voltage electrode, a housing connection port is disposed outside the third insulating layer, the ground electrode is connected to the housing connection port, the high voltage electrode is electrically connected to the metal rod, and a shock wave output window is disposed on the housing connection port around the high voltage electrode and the ground electrode.

9. The apparatus according to claim 7, wherein the energy storage capacitors are connected in series, the metal pipes of adjacent energy storage capacitors are connected by screw threads, a connector is arranged between the metal rods of adjacent energy storage capacitors, a spring is arranged outside the connector, a lead is arranged in the center of the spring, and two ends of the lead are respectively connected with the metal rods of the adjacent energy storage capacitors; wherein, a rotating gear is sleeved outside one end of one energy storage capacitor positioned at the end head.

10. The apparatus for constructing an enlarged bottom of a pulse pile foundation according to claim 9, wherein a self-breakdown gas spark switch is disposed between two of the plurality of sets of energy storage capacitors, a first electrode is disposed at one end of the self-breakdown gas spark switch, a second electrode is disposed at the other end of the self-breakdown gas spark switch, a housing is disposed outside the self-breakdown gas spark switch, a first insulating layer is disposed between the housing and the first electrode, and a second insulating layer is disposed between the housing and the second electrode.

Technical Field

The invention relates to the field of buildings, in particular to a building construction method and a building construction device.

Background

With the continuous acceleration of the urbanization process in China, the construction of cities and traffic infrastructures is further developed, the number of high-rise buildings is increased day by day, and higher requirements are put forward on the quality safety of pile foundation construction. In the pile foundation construction process, the condition of encountering unfavorable geology such as loose soft soil, collapsible loess is not rare, because the pile foundation construction is secret engineering in the underground, these unfavorable geology bring very big difficulty for the pile foundation construction, how foundation bearing capacity, increase pile foundation stability, if handle improper accident such as pile foundation settlement slope can appear.

Particularly, when disasters such as earthquake, tornado and the like occur, the vertically-driven pile foundation is easy to be rooted and pulled up, so that the accidents of inclination and uneven settlement of the whole building are caused.

Disclosure of Invention

The invention provides a pulse pile foundation bottom-expanding construction method and a device, aiming at solving the technical problems that in the prior art, a vertically-driven pile foundation is easy to be uprooted with roots, so that the inclination and settlement of the whole building are caused, and the depth of the pile foundation needs to be increased in the foundation construction with a complex geological structure.

The invention provides a pulse pile foundation bottom expanding construction method, which comprises the following steps:

(1) checking geological data, and selecting proper hole forming construction machine machinery and construction method by combining design parameters.

(2) Leveling the field, clearing the above-ground obstacles, marking the underground structures and pipelines in the range of the treatment field, and keeping the field flat.

(3) And (6) measuring and setting out, and calibrating the center position of the pile foundation.

(4) And (3) forming the original hole by applying the construction machine and the construction method selected in the step (1).

(5) And (3) putting the pulse pile foundation bottom expanding construction device to the bottom of the original hole after the original hole is punched, beating the periphery of the punched hole bottom by using shock waves, and rotating while beating until the pile foundation with the expanded bottom is formed after the pile foundation is beaten.

(6) And filling holes to form pile foundations.

In the invention, a hole-forming construction machine is a mechanical crawler-type rotary drilling rig or a positive and negative circulation drilling rig. The construction method of the invention is dry hole drilling or mud circulation drilling.

In the invention, the impulse pile foundation bottom expanding construction device uses the shock wave to strike the rock soil layer around the pile bottom, and the formed pile foundation with the expanded bottom and the original hole section are in the shape of the inverted T.

In the invention, the reinforcement cage is firstly put in the hole filling process, and then concrete is poured.

The invention also provides a pulse pile foundation bottom expanding construction device which comprises a constant current power supply, an energy storage capacitor and an energy converter, wherein the constant current power supply is electrically connected with the energy storage capacitor, and the energy storage capacitor is connected with the energy converter.

In the invention, the constant current power supply is a high-voltage direct current constant current power supply.

According to the invention, the energy storage capacitor is of a coaxial structure, the metal rod is arranged in the energy storage capacitor, the metal pipe is arranged outside the energy storage capacitor, the insulating layer is arranged outside the metal rod, and the supporting body is arranged between the insulating layer and the metal pipe.

The energy converter comprises a ground electrode and a high-voltage electrode, a third insulating layer is arranged outside the high-voltage electrode, a shell connecting port is arranged outside the third insulating layer, the ground electrode is connected with the shell connecting port, the high-voltage electrode is electrically connected with a metal rod, and shock wave output windows are arranged on pipe columns around the high-voltage electrode and the ground electrode.

In the invention, a plurality of groups of energy storage capacitors are connected in sequence, metal pipes of adjacent energy storage capacitors are in threaded connection, a connector is arranged between metal rods of the adjacent energy storage capacitors, a spring is arranged outside the connector, a lead is arranged in the center of the spring, and two ends of the lead are respectively connected with the metal rods of the adjacent energy storage capacitors; wherein, a rotating gear is sleeved outside one end of one energy storage capacitor positioned at the end head.

In the invention, a self-breakdown gas spark switch is arranged between two groups of the plurality of groups of energy storage capacitors, one end of the self-breakdown gas spark switch is provided with a first electrode, the other end of the self-breakdown gas spark switch is provided with a second electrode, a shell is arranged outside the self-breakdown gas spark switch, a first insulating layer is arranged between the shell and the first electrode, and a second insulating layer is arranged between the shell and the second electrode.

The invention has the beneficial effects that:

the pulse pile foundation bottom expanding construction method and the pulse pile foundation bottom expanding construction device provided by the invention have the advantages of simple construction method, convenience in operation, low construction cost, high construction efficiency, simple equipment, easiness in transportation, high earthquake resistance level of the finished pile foundation, strong anti-settling capacity, capability of adapting to various geological environments, more obvious application effect in high-rise buildings, super high-rise buildings and other buildings with large bearing capacity, and wide applicability in the field of buildings.

Drawings

FIG. 1 is a schematic diagram of a shock wave generator of the pedestal-enlarging construction device for pulse-discharging pile foundation.

Fig. 2 is a radial cross-sectional view of an energy storage capacitor of the present invention.

Fig. 3 is a transverse cross-sectional structural view of the energy storage capacitor of the present invention.

Fig. 4 is a structural diagram of the self-breakdown gas spark switch of the present invention.

Fig. 5 is a structural diagram of an energy converter according to the present invention.

Fig. 6 is a pile foundation hole of the present invention.

FIG. 7 is an impingement hole of the present invention.

In FIGS. 1-7: 1-energy storage capacitor, 2-energy converter, 3-rotating gear, 4-metal pipe, 5-insulating layer, 6-metal rod, 7-support, 8-first electrode, 9-second electrode, 10-first insulating layer, 11-second insulating layer, 12-shell, 13-third insulating layer, 14-high voltage electrode, 15-shock wave output window, 16-shell connecting port, 17-ground electrode, 18-original hole and 19-bottom enlarged pile foundation.

Detailed Description

The following description of the embodiments of the present invention will be made in further detail with reference to the accompanying fig. 1 to 7 and examples, but the method of the present invention is not limited to the following examples.

In the present invention, for convenience of description, the description of the relative positional relationship of the components in the present invention is described based on the layout pattern of fig. 1, such as: the positional relationship of up, down, left, right, etc. is determined in accordance with the layout direction of fig. 1.

The energy storage capacitor 1, the constant current power supply and the like used in the invention are purchased or customized through market approaches.