AU2021105173A4 - Construction Treatment Method for Reinforcing Deep Peat Soil Foundation - Google Patents
Construction Treatment Method for Reinforcing Deep Peat Soil Foundation Download PDFInfo
- Publication number
- AU2021105173A4 AU2021105173A4 AU2021105173A AU2021105173A AU2021105173A4 AU 2021105173 A4 AU2021105173 A4 AU 2021105173A4 AU 2021105173 A AU2021105173 A AU 2021105173A AU 2021105173 A AU2021105173 A AU 2021105173A AU 2021105173 A4 AU2021105173 A4 AU 2021105173A4
- Authority
- AU
- Australia
- Prior art keywords
- deep
- peat soil
- holes
- grouting
- foundation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
- 239000002689 soil Substances 0.000 title claims abstract description 145
- 238000000034 method Methods 0.000 title claims abstract description 49
- 230000003014 reinforcing effect Effects 0.000 title claims abstract description 34
- 238000010276 construction Methods 0.000 title claims abstract description 19
- 239000003415 peat Substances 0.000 claims abstract description 114
- 230000002787 reinforcement Effects 0.000 claims abstract description 68
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 66
- 239000010959 steel Substances 0.000 claims abstract description 66
- 239000002131 composite material Substances 0.000 claims abstract description 21
- 238000005056 compaction Methods 0.000 claims abstract description 16
- 238000002627 tracheal intubation Methods 0.000 claims abstract description 15
- 239000004576 sand Substances 0.000 claims abstract description 12
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims abstract description 7
- 235000017491 Bambusa tulda Nutrition 0.000 claims abstract description 7
- 241001330002 Bambuseae Species 0.000 claims abstract description 7
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims abstract description 7
- 230000009471 action Effects 0.000 claims abstract description 7
- 239000011425 bamboo Substances 0.000 claims abstract description 7
- 230000005484 gravity Effects 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims abstract description 7
- 239000011148 porous material Substances 0.000 claims abstract description 7
- 239000004575 stone Substances 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 239000004568 cement Substances 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 8
- 238000005553 drilling Methods 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 5
- 239000002002 slurry Substances 0.000 claims description 5
- 239000011440 grout Substances 0.000 abstract 2
- 238000003780 insertion Methods 0.000 abstract 1
- 230000037431 insertion Effects 0.000 abstract 1
- 239000004927 clay Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000001723 curing Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/02—Improving by compacting
- E02D3/046—Improving by compacting by tamping or vibrating, e.g. with auxiliary watering of the soil
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D1/00—Investigation of foundation soil in situ
- E02D1/02—Investigation of foundation soil in situ before construction work
- E02D1/022—Investigation of foundation soil in situ before construction work by investigating mechanical properties of the soil
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/005—Soil-conditioning by mixing with fibrous materials, filaments, open mesh or the like
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/02—Improving by compacting
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/02—Improving by compacting
- E02D3/08—Improving by compacting by inserting stones or lost bodies, e.g. compaction piles
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/12—Consolidating by placing solidifying or pore-filling substances in the soil
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/12—Consolidating by placing solidifying or pore-filling substances in the soil
- E02D3/123—Consolidating by placing solidifying or pore-filling substances in the soil and compacting the soil
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Soil Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Agronomy & Crop Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The present invention discloses a construction treatment method for reinforcing deep peat soil
foundation, by laying grouting holes along the deep peat soil foundation, laying a plurality of
shallow holes for inserting short grouting pipes and a plurality of deep holes for inserting long
grouting pipes, injecting grout into the short grouting pipes to form a composite foundation
reinforcement platform, injecting grout into the long grouting pipes to form a composite pile
foundation, while laying reinforcing holes along the deep peat soil foundation, laying a
plurality of shallow holes for inserting short reinforcing bars and a plurality of deep holes for
inserting long reinforcing bars, and using a pipe insertion machine to insert reinforcing bars
into the shallow holes for reinforcing bars and the deep holes for reinforcing bars to form a
composite pile foundation. The reinforcement pile foundation is formed by inserting
reinforcing bars into the shallow holes and deep holes with long reinforcing bars, and
reinforcing pile foundation is strengthened by using composite pile foundation and reinforcing
pile foundation to enhance the compressive strength of soil body and significantly improve the
bearing capacity of deep peat soil foundation.
1/1
S1001: survey the surrounding area of deep peat soil foundation, obtain
the nature of the area where the foundation is located, determine the
ground reinforcement or underground reinforcement, determine the area
of deep peat soil foundation, and prepare reinforcement materials and
tools according to the area of deep peat soil foundation;
S1002: remove the surface vegetation ofthe deep peat soil foundation,
then lay bamboo basketry as a working cushion, cover the working
cushion with soil layer, and tamp the soil layer as the working base of
tamping machine and intubation inachine, and at the same time, use
landfill and tamp fine stone layer to lay the -shaped road within the
scope of the deep peat soil foundation
S1003: grouting holes are arranged along the deep peat soil foundation,
and a plurality of shallow grouting holes with short grouting pipes and
deep grouting holes withlong grouting pipes are arranged: Grouting is
carried out into the short grouting pipes to form a composite foundation
reinforcement platform, and grouting is carried out into the long grouting
pipes to form a composite pile foundation
S1004: laying steel bar holes along the deep peat soil foundation, laying a
plurality of shallow steel bar holes with short steel bars and deep steel bar
holes with long steel bars, and implanting steel bars into the shallow steel
bar holes and deep steel bar holes by adopting an intubation machine to
form a reinforcing pilefoundation;
31005: under the action of gravity, the deep peat soil foundation is
compacted by a tampMg machine, and the soil pores of the deep peat soil
foundation are compressed; finally, a sand cushion layer is laid on the
surface of the deep peat soil foundation, and the deep peat soil foundation
is reinforced after the compaction is continued.
Figure 1
Description
1/1
S1001: survey the surrounding area of deep peat soil foundation, obtain the nature of the area where the foundation is located, determine the ground reinforcement or underground reinforcement, determine the area of deep peat soil foundation, and prepare reinforcement materials and tools according to the area of deep peat soil foundation;
S1002: remove the surface vegetation ofthe deep peat soil foundation, then lay bamboo basketry as a working cushion, cover the working cushion with soil layer, and tamp the soil layer as the working base of tamping machine and intubation inachine, and at the same time, use landfill and tamp fine stone layer to lay the -shaped road within the scope of the deep peat soil foundation
S1003: grouting holes are arranged along the deep peat soil foundation, and a plurality of shallow grouting holes with short grouting pipes and deep grouting holes withlong grouting pipes are arranged: Grouting is carried out into the short grouting pipes to form a composite foundation reinforcement platform, and grouting is carried out into the long grouting pipes to form a composite pile foundation
S1004: laying steel bar holes along the deep peat soil foundation, laying a plurality of shallow steel bar holes with short steel bars and deep steel bar holes with long steel bars, and implanting steel bars into the shallow steel bar holes and deep steel bar holes by adopting an intubation machine to form a reinforcing pilefoundation;
31005: under the action of gravity, the deep peat soil foundation is compacted by a tampMg machine, and the soil pores of the deep peat soil foundation are compressed; finally, a sand cushion layer is laid on the surface of the deep peat soil foundation, and the deep peat soil foundation is reinforced after the compaction is continued.
Figure 1
Construction Treatment Method for Reinforcing Deep Peat Soil Foundation
The invention relates to the technical field of foundation reinforcement, in particular to a
construction treatment method for deep peat soil foundation reinforcement.
Soft soil foundation treatment methods mainly include: replacement, compaction
(dynamic compaction), deep mixing method, preloading method, curing method, etc. The
replacement method is suitable for the foundation with thin soft soil layer; Compaction
(dynamic compaction) is generally suitable for treating gravel soil, sand soil, silt and
cohesive soil with low saturation, collapsible less, miscellaneous fill, etc. Deep mixing
method is suitable for soft clay treatment within 20 m; preloading method is suitable for
deep saturated soft clay, but for silt with plasticity index greater than 25 and water
content greater than 85%, its applicability should be determined by field test.
A large number of basic projects such as ports, roads and airports need to cross swamp
areas. However, peat soil not only has the characteristics of high water content, large void
ratio, high compressibility and low shear strength of general soft soil, but also has the
characteristics of high organic matter content, high plasticity index and high sensitivity.
Therefore, the conventional preloading method with plastic drainage plate is not ideal.
Therefore, in view of the above situation, it is urgent to develop a construction treatment
method for deep peat soil foundation reinforcement, so as to overcome the shortcomings
in current practical application.
The purpose of the present invention is to provide a construction treatment method for
deep peat soil foundation reinforcement, so as to solve the problems raised in the above
background technology.
To achieve the above purpose, the present invention provides the following technical
scheme:
A construction treatment method for reinforcing deep peat soil foundation comprises the
following steps:
S1001: the surrounding area of deep peat soil foundation is surveyed, and it is found that
the nature of the area where the foundation is located is ground or tunnel or mine
roadway, and the foundation reinforcement nature is determined as ground reinforcement
or underground reinforcement, and the area of deep peat soil foundation is determined,
and reinforcement materials and tools are prepared according to the area of deep peat soil
foundation;
S1002: remove the surface vegetation of the deep peat soil foundation, then lay bamboo
basketry as a working cushion, cover the working cushion with soil layer, and tamp the
soil layer as the working base of tamping machine and intubation machine, and at the
same time, use landfill and tamp fine stone layer to lay the #-shaped road within the
scope of the deep peat soil foundation;
S1003: grouting holes are arranged along the deep peat soil foundation, and a plurality of
shallow grouting holes with short grouting pipes and deep grouting holes with long
grouting pipes are arranged. Grouting is carried out into the short grouting pipes to form a composite foundation reinforcement platform, and grouting is carried out into the long grouting pipes to form a composite pile foundation;
S1004: laying steel bar holes along the deep peat soil foundation, laying a plurality of
shallow steel bar holes with short steel bars and deep steel bar holes with long steel bars,
and implanting steel bars into the shallow steel bar holes and deep steel bar holes by
adopting an intubation machine to form a reinforcing pile foundation;
S1005: under the action of gravity, the deep peat soil foundation is compacted by a
tamping machine, and the soil pores of the deep peat soil foundation are compressed;
finally, a sand cushion layer is laid on the surface of the deep peat soil foundation, and
the deep peat soil foundation is reinforced after the compaction is continued.
As a further scheme of the present invention, in step S1003, the grouting holes are
arranged in a pattern of quincunx, and the center of adjacent grouting holes is spaced 1-3
m apart.
As a further scheme of the present invention, in step S1003, the leap hole method is
adopted for grouting, and the grouting hole without grouting is used as the pressure relief
hole.
As a further scheme of the present invention, in step S1003, the grouting slurry is a
mixture of cement, sand and water, and the mass ratio of cement, sand and water is 1:3:1.
As a further scheme of the present invention, in step S1003, the grouting operation
includes high-pressure jet grouting, hole sealing and vibration pipe figure operations in
turn.
As a further scheme of the present invention, in step S1004, the reinforcement holes are
arranged in a pattern of quincunx, with the center spacing between adjacent reinforcement holes being 1-3 m, the center spacing between adjacent reinforcement deep holes being 8-10 m, the depth of shallow reinforcement holes being 1-4 m, and the depth of deep reinforcement holes being 3-12 m.
As a further scheme of the invention, in step S1004, the opening method of the steel bar
hole is to start the pile driver to rotate the drill bit, drill into the depth of 1-2 m, clean the
discharged muck synchronously, trim the compaction site, and keep the verticality of the
drilling machine in the hole forming process; continue to drill to a depth of 4-8 m and
clean up the discharged muck synchronously, and continue to drill to a depth of 10-12 m
and clean up the discharged muck synchronously to complete drilling.
As a further scheme of the present invention, in step S1005, the working method of the
rammer is as follows: a rammer with a weight of 15-20 t is used for foundation tamping,
the diameter of the rammer is 1-1.5 m, the falling height of the rammer of the rammer is
-25 m, and the tamping time is 30-50 min.
Compared with the prior art, the invention has the beneficial effects that grouting holes
are arranged along the deep peat soil foundation, a plurality of shallow grouting holes
with short grouting pipes and deep grouting holes with long grouting pipes are arranged,
a composite foundation reinforcement platform is formed by grouting into the short
grouting pipes, a composite pile foundation is formed by grouting into the long grouting
pipes, at the same time, steel bar holes are laid along the deep peat soil foundation, with
multiple shallow holes for short steel bar holes and multiple deep holes for long steel bar
holes. Reinforcing pile foundation is formed by implanting steel bars into shallow holes
and deep holes of steel bars with intubation machine. Composite pile foundation and
reinforcing pile foundation are used to reinforce deep peat soil foundation, which enhances the compressive strength of soil and significantly improves the bearing capacity of deep peat soil foundation.
Fig. 1 is a flow chart of the construction treatment method for reinforcing deep peat soil
foundation.
The technical scheme of this patent will be further explained in detail with reference to
the specific embodiments below.
Embodiments of this patent are described in detail below, embodiments of which are
shown in the accompanying figures, in which identical or similar reference numerals
denote identical or similar elements or elements having identical or similar functions
throughout. The embodiments described below by referring to the figures are exemplary,
and are only used to explain the patent, and cannot be understood as limiting the patent.
In the description of this patent, it should be understood that the orientation or positional
relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left",
"right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" indicate the
orientation or position is based on the orientation or positional relationship shown in the
accompanying figures and is intended only to facilitate and simplify the description of
this patent, not to indicate or imply that the device or element referred to must have a
particular orientation, or be constructed and operate in a particular orientation, and
therefore is not to be construed as a limitation of this patent.
In the description of this patent, it should be noted that, unless otherwise specified and
limited, the terms "installation", "connection", "communication" and "setting" should be understood in a broad sense, for example, they can be fixedly connected or set, or can be detachably connected or set, or integrally connected or set. For ordinary technicians in this field, the specific meanings of the above terms in this patent can be understood according to specific conditions.
Embodiment 1
Referring to fig.1, in an embodiment of the present invention, a construction treatment
method for reinforcing a deep peat soil foundation includes the following steps:
Si001: survey the surrounding area of deep peat soil foundation, obtain the nature of the
area where the foundation is located, determine the ground reinforcement or underground
reinforcement, determine the area of deep peat soil foundation, and prepare reinforcement
materials and tools according to the area of deep peat soil foundation;
S1002: remove the surface vegetation of the deep peat soil foundation, then lay bamboo
basketry as a working cushion, cover the working cushion with soil layer, and tamp the
soil layer as the working base of tamping machine and intubation machine, and at the
same time, use landfill and tamp fine stone layer to lay the #-shaped road within the
scope of the deep peat soil foundation;
S1003: grouting holes are arranged along the deep peat soil foundation, and a plurality of
shallow grouting holes with short grouting pipes and deep grouting holes with long
grouting pipes are arranged. Grouting is carried out into the short grouting pipes to form a
composite foundation reinforcement platform, and grouting is carried out into the long
grouting pipes to form a composite pile foundation;
S1004: laying steel bar holes along the deep peat soil foundation, laying a plurality of
shallow steel bar holes with short steel bars and deep steel bar holes with long steel bars, and implanting steel bars into the shallow steel bar holes and deep steel bar holes by adopting an intubation machine to form a reinforcing pile foundation;
S1005. under the action of gravity, the deep peat soil foundation is compacted by a
tamping machine, and the soil pores of the deep peat soil foundation are compressed;
finally, a sand cushion layer is laid on the surface of the deep peat soil foundation, and
the deep peat soil foundation is reinforced after the compaction is continued.
It should be noted that in the embodiment of the present invention, when surveying the
deep peat soil foundation and its surrounding areas, the properties of the deep peat soil
foundation can be obtained, and the deep peat soil foundation can be the ground, a tunnel
or a mine roadway, and the area of the deep peat soil foundation is determined, and then
it is taken as the foundation reinforcement scope for reinforcement.
In the step S1003 of the embodiment of the present invention, the grouting holes are
arranged in a pattern of quincunx, and the centers of adjacent grouting holes are spaced 2
m apart;
In the step S1003 of the embodiment of the present invention, the grouting slurry is a
mixture of cement, sandstone and water, and the mass ratio of cement, sandstone and
water is 1: 3: 1;
In the step S1003 of the embodiment of the present invention, a leap hole method is
adopted for grouting, and a grouting hole without grouting is used as a pressure relief
hole;
In the step S1003 of the embodiment of the present invention, the grouting operation is as
follows: high-pressure jet grouting, hole sealing and vibration pipe figure are performed
in sequence;
Understandably, the grouting operation is too heavy, and the high-pressure jet grouting,
hole sealing and vibration pipe figure operations are carried out in turn by adopting the
leap hole method.
In the step S1004 of the embodiment of the present invention, the reinforcement holes are
arranged in a pattern of quincunx, with the centers of adjacent reinforcement holes spaced
2 m apart, and the centers of adjacent reinforcement deep holes spaced 9m apart, with the
depth of shallow reinforcement holes being 3 m and deep reinforcement holes being 10
m.
In the step S1004 of the embodiment of the present invention, the opening method of the
steel bar hole is to start the pile driver to rotate the drill bit, drill into 1 m of depth, clean
the discharged muck synchronously, trim the compaction site, and keep the verticality of
the drill in the hole forming process; Continue to drill 6 m deep and clean up the
discharged muck synchronously, and continue to drill 12 m deep and clean up the
discharged muck synchronously, thus completing drilling.
In the step S1005 of the embodiment of the present invention, the working method of the
tamping machine is as follows: a tamping machine with a weight of 18 t is used for
tamping the foundation, the diameter of the tamping machine is 1.5 m, the falling height
of the tamping machine is 25 m, and the tamping time is 30 min.
Embodiment 2
Referring to fig. 1, in an embodiment of the present invention, a construction treatment
method for reinforcing a deep peat soil foundation includes the following steps:
S1001: survey the surrounding area of deep peat soil foundation, obtain the nature of the
area where the foundation is located, determine the ground reinforcement or underground reinforcement, determine the area of deep peat soil foundation, and prepare reinforcement materials and tools according to the area of deep peat soil foundation;
S1002: remove the surface vegetation of the deep peat soil foundation, then lay bamboo
basketry as a working cushion, cover the working cushion with soil layer, and tamp the
soil layer as the working base of tamping machine and intubation machine, and at the
same time, use landfill and tamp fine stone layer to lay the #-shaped road within the
scope of the deep peat soil foundation;
S1003: grouting holes are arranged along the deep peat soil foundation, and a plurality of
shallow grouting holes with short grouting pipes and deep grouting holes with long
grouting pipes are arranged. Grouting is carried out into the short grouting pipes to form a
composite foundation reinforcement platform, and grouting is carried out into the long
grouting pipes to form a composite pile foundation;
S1004: laying steel bar holes along the deep peat soil foundation, laying a plurality of
shallow steel bar holes with short steel bars and deep steel bar holes with long steel bars,
and implanting steel bars into the shallow steel bar holes and deep steel bar holes by
adopting an intubation machine to form a reinforcing pile foundation;
S1005: under the action of gravity, the deep peat soil foundation is compacted by a
tamping machine, and the soil pores of the deep peat soil foundation are compressed;
finally, a sand cushion layer is laid on the surface of the deep peat soil foundation, and
the deep peat soil foundation is reinforced after the compaction is continued.
It should be noted that in the embodiment of the present invention, when surveying the
deep peat soil foundation and its surrounding areas, the properties of the deep peat soil
foundation can be obtained, and the deep peat soil foundation can be the ground, a tunnel or a mine roadway, and the area of the deep peat soil foundation is determined, and then it is taken as the foundation reinforcement scope for reinforcement.
In the step S1003 of the embodiment of the present invention, the grouting holes are
arranged in quincunx, and the centers of adjacent grouting holes are spaced 3 m apart;
In the step S1003 of the embodiment of the present invention, the grouting slurry is a
mixture of cement, sandstone and water, and the mass ratio of cement, sandstone and
water is 1: 3: 1;
In the step S1003 of the embodiment of the present invention, a leap hole method is
adopted for grouting, and a grouting hole without grouting is used as a pressure relief
hole;
In the step S1003 of the embodiment of the present invention, the grouting operation is as
follows: high-pressure jet grouting, hole sealing and vibration pipe figure are performed
in sequence;
Understandably, the grouting operation is too heavy, and the high-pressure jet grouting,
hole sealing and vibration pipe figure operations are carried out in turn by adopting the
leap hole method.
In the step S1004 of the embodiment of the present invention, the reinforcement holes are
arranged in a pattern of quincunx, with the centers of adjacent reinforcement holes spaced
3 m apart, the centers of adjacent reinforcement deep holes spaced 10 m apart, the depth
of shallow reinforcement holes being 4 m, and the depth of deep reinforcement holes
being 12 m.
In the step S1004 of the embodiment of the present invention, the opening method of the
steel bar hole is to start the pile driver to rotate the drill bit, drill into 2 m depth, clean the discharged muck synchronously, trim the compaction site, and keep the verticality of the drill in the hole forming process; continue to drill 8 m deep and clean up the discharged muck synchronously, and continue to drill 12 m deep and clean up the discharged muck synchronously to complete drilling.
In the step S1005 of the embodiment of the present invention, the working method of the
tamping machine is as follows: a tamping machine with a weight of 15-20 t is used for
tamping the foundation, the diameter of the tamping machine is 1.5 m, the falling height
of the tamping machine is 25 m, and the tamping time is 50 min.
Embodiment 3
Referring to fig. 1, in an embodiment of the present invention, a construction treatment
method for reinforcing a deep peat soil foundation includes the following steps:
S1001: survey the surrounding area of deep peat soil foundation, obtain the nature of the
area where the foundation is located, determine the ground reinforcement or underground
reinforcement, determine the area of deep peat soil foundation, and prepare reinforcement
materials and tools according to the area of deep peat soil foundation;
S1002: remove the surface vegetation of the deep peat soil foundation, then lay bamboo
basketry as a working cushion, cover the working cushion with soil layer, and tamp the
soil layer as the working base of tamping machine and intubation machine, and at the
same time, use landfill and tamp fine stone layer to lay the #-shaped road within the
scope of the deep peat soil foundation;
S1003: grouting holes are arranged along the deep peat soil foundation, and a plurality of
shallow grouting holes with short grouting pipes and deep grouting holes with long
grouting pipes are arranged. Grouting is carried out into the short grouting pipes to form a composite foundation reinforcement platform, and grouting is carried out into the long grouting pipes to form a composite pile foundation;
S1004: laying steel bar holes along the deep peat soil foundation, laying a plurality of
shallow steel bar holes with short steel bars and deep steel bar holes with long steel bars,
and implanting steel bars into the shallow steel bar holes and deep steel bar holes by
adopting an intubation machine to form a reinforcing pile foundation;
S1005: under the action of gravity, the deep peat soil foundation is compacted by a
tamping machine, and the soil pores of the deep peat soil foundation are compressed;
finally, a sand cushion layer is laid on the surface of the deep peat soil foundation, and
the deep peat soil foundation is reinforced after the compaction is continued.
It should be noted that in the embodiment of the present invention, when surveying the
deep peat soil foundation and its surrounding areas, the properties of the deep peat soil
foundation can be obtained, and the deep peat soil foundation can be the ground, a tunnel
or a mine roadway, and the area of the deep peat soil foundation is determined, and then
it is taken as the foundation reinforcement scope for reinforcement.
In the step S1003 of the embodiment of the present invention, the grouting holes are
arranged in a pattern of quincunx, and the center of adjacent grouting holes is spaced by 1
m;
In the step S1003 of the embodiment of the present invention, the grouting slurry is a
mixture of cement, sandstone and water, and the mass ratio of cement, sandstone and
water is 1: 3: 1;
In the step S1003 of the embodiment of the present invention, a leap hole method is
adopted for grouting, and a grouting hole without grouting is used as a pressure relief
hole;
In the step S1003 of the embodiment of the present invention, the grouting operation is as
follows: high-pressure jet grouting, hole sealing and vibration pipe figure are performed
in sequence;
Understandably, the grouting operation is too heavy, and the high-pressure jet grouting,
hole sealing and vibration pipe figure operations are carried out in turn by adopting the
leap hole method.
In the step S1004 of the embodiment of the present invention, the reinforcement holes are
arranged in a pattern of quincunx, with the center spacing between adjacent
reinforcement holes being 1 m, the center spacing between adjacent reinforcement deep
holes being 8 m, the depth of shallow reinforcement holes being 1 m and the depth of
deep reinforcement holes being 3 m.
In the step S1004 of the embodiment of the present invention, the opening method of the
steel bar hole is to start the pile driver to rotate the drill bit, drill into Im depth, clean the
discharged muck synchronously, trim the compaction site, and keep the verticality of the
drill in the hole forming process; Continue to drill 4 m deep and clean up the discharged
muck synchronously, and continue to drill 10 m deep and clean up the discharged muck
synchronously, thus completing drilling.
In the step S1005 of the embodiment of the present invention, the working method of the
tamping machine is as follows: a tamping machine with a weight of 15 t is used to tamp the foundation, the diameter of the tamping machine is 1 m, the falling height of the tamping machine is 20 m, and the tamping time is 30 min.
The above is only the preferred embodiment of the present invention, and it should be
pointed out that for those skilled in the art, without departing from the concept of the
present invention, several modifications and improvements can be made, which should
also be regarded as the protection scope of the present invention, and these will not affect
the implementation effect of the present invention and the practicability of patents.
Claims (8)
1. A construction treatment method for reinforcing deep peat soil foundation is
characterized by comprising the following steps:
S1001: survey the surrounding area of deep peat soil foundation, obtain the nature of the
area where the foundation is located, determine the ground reinforcement or underground
reinforcement, determine the area of deep peat soil foundation, and prepare reinforcement
materials and tools according to the area of deep peat soil foundation;
S1002: remove the surface vegetation of the deep peat soil foundation, then lay bamboo
basketry as a working cushion, cover the working cushion with soil layer, and tamp the
soil layer as the working base of tamping machine and intubation machine, and at the
same time, use landfill and tamp fine stone layer to lay the #-shaped road within the
scope of the deep peat soil foundation;
S1003: grouting holes are arranged along the deep peat soil foundation, and a plurality of
shallow grouting holes with short grouting pipes and deep grouting holes with long
grouting pipes are arranged. Grouting is carried out into the short grouting pipes to form a
composite foundation reinforcement platform, and grouting is carried out into the long
grouting pipes to form a composite pile foundation;
S1004: laying steel bar holes along the deep peat soil foundation, laying a plurality of
shallow steel bar holes with short steel bars and deep steel bar holes with long steel bars,
and implanting steel bars into the shallow steel bar holes and deep steel bar holes by
adopting an intubation machine to form a reinforcing pile foundation;
S1005: under the action of gravity, the deep peat soil foundation is compacted by a
tamping machine, and the soil pores of the deep peat soil foundation are compressed; finally, a sand cushion layer is laid on the surface of the deep peat soil foundation, and the deep peat soil foundation is reinforced after the compaction is continued.
2. The construction treatment method for reinforcing deep peat soil foundation
according to claim 1, which is characterized in that in step S1003, the grouting holes are
arranged in a pattern of quincunx, and the center of adjacent grouting holes is spaced by
1-3 m.
3. The construction treatment method for reinforcing deep peat soil foundation
according to claim 2, which is characterized in that in step S1003, the grouting adopts the
leap hole method, and the grouting hole without grouting is used as the pressure relief
hole.
4. A construction treatment method for reinforcing deep peat soil foundation according
to claim 3, characterized in that in step S1003, the grouting slurry is a mixture of cement,
sand and water, and the mass ratio of cement, sand and water is 1:3:1.
5. A construction treatment method for reinforcing deep peat soil foundation according
to claim 2, which is characterized in that in step S1003, the grouting operation includes
high-pressure jet grouting, hole sealing and vibration pipe figure operations in sequence.
6. The construction treatment method for reinforcing deep peat soil foundation
according to claim 1, which is characterized in that in step S1004, the reinforcement
holes are arranged in a pattern of quincunx, with the centers of adjacent reinforcement
holes being 1-3 m apart, the centers of adjacent reinforcement deep holes being 8-10 m
apart, the depth of shallow reinforcement holes being 1-4 m, and the depth of deep
reinforcement holes being 3-12 m.
7. The construction treatment method for deep peat soil foundation reinforcement
according to claim 1, which is characterized in that in step S1004, the opening method of
the steel bar hole is to start the pile driver to rotate the drill bit, drill into the depth of 1-2
m, clean the discharged muck synchronously, trim the compaction site, and keep the
perpendicularity of the drill in the hole forming process; continue to drill to a depth of 4-8
m and clean up the discharged muck synchronously, and continue to drill to a depth of
-12 m and clean up the discharged muck synchronously to complete drilling.
8. The construction treatment method for reinforcing deep peat soil foundation according
to claim 1, characterized in that in step S1005, the working method of the rammer is as
follows: a rammer with a weight of 15-20 t is used to tamp the foundation, the diameter
of the rammer is 1-1.5 m, the falling height of the rammer is 20-25 m, and the tamping
time is 30-50 min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2021105173A AU2021105173A4 (en) | 2021-08-09 | 2021-08-09 | Construction Treatment Method for Reinforcing Deep Peat Soil Foundation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2021105173A AU2021105173A4 (en) | 2021-08-09 | 2021-08-09 | Construction Treatment Method for Reinforcing Deep Peat Soil Foundation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AU2021105173A4 true AU2021105173A4 (en) | 2021-10-07 |
Family
ID=77922955
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2021105173A Ceased AU2021105173A4 (en) | 2021-08-09 | 2021-08-09 | Construction Treatment Method for Reinforcing Deep Peat Soil Foundation |
Country Status (1)
| Country | Link |
|---|---|
| AU (1) | AU2021105173A4 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114508089A (en) * | 2022-02-18 | 2022-05-17 | 中国建筑土木建设有限公司 | Construction method for reinforcing soft soil foundation by geopolymer |
-
2021
- 2021-08-09 AU AU2021105173A patent/AU2021105173A4/en not_active Ceased
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114508089A (en) * | 2022-02-18 | 2022-05-17 | 中国建筑土木建设有限公司 | Construction method for reinforcing soft soil foundation by geopolymer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Patel | Geotechnical investigations and improvement of ground conditions | |
| CN106759473B (en) | The constructing structure and its construction method of underground pipe gallery and road | |
| CN103485336B (en) | Drilling pile drilling construction method of bead-type karst area | |
| CN103233468A (en) | Polymer gravel pile grouting method | |
| CN105464074B (en) | A kind of artificial digging pile high polymer grouting safeguard structure and its construction method | |
| CN108486976B (en) | Roadbed structure at mountain highway filling and digging junction and construction method thereof | |
| CN103074882A (en) | Construction method for reinforcing island-type perennial frozen-soil foundation by adopting gravel piles | |
| CN104329020B (en) | A kind of reinforced long spire embedding rock construction equipment and technique thereof | |
| CN111322087A (en) | Construction method for soft soil highway tunnel entrance semi-open semi-hidden tunnel in mountainous area | |
| CN102808627A (en) | Underground excavation construction method of steel pipe shed | |
| KR20100086146A (en) | Construction method for composite pile using digging and hardenning | |
| CN108532393A (en) | A kind of Widening Embankment slope foundation hardened system and method | |
| AU2021105173A4 (en) | Construction Treatment Method for Reinforcing Deep Peat Soil Foundation | |
| CN102425179B (en) | Structure of reinforced soil sewer supported by bored concrete piles of mini steel tubes | |
| CN116377780A (en) | Mountain highway high-fill roadbed filling construction method | |
| CN103821140B (en) | A kind of construction method of reinforcing soft foundation | |
| CN113502800A (en) | Construction treatment method for reinforcing deep peat soil foundation | |
| CN108570979A (en) | A kind of construction method for building antiseepage composite foundation on dolomite stratigraph | |
| CN115288162A (en) | Reinforcing method for soft soil foundation fill slope | |
| CN114109394A (en) | Method for determining pile length of tunnel shallow-buried weak surrounding rock high-pressure jet grouting pile method ground surface reinforcement | |
| Munfakh et al. | Ground improvement engineering-issues and selection | |
| CN108867279B (en) | Soft soil roadbed municipal road construction method | |
| CN102182867B (en) | Method for laying ore pulp pipelines in quicksand bed section | |
| CN110080266A (en) | One kind by change fill out inter-pile soil raising building Pile Bearing Capacity method | |
| CN113882353B (en) | Multi-pile type conversion disposal structure under complex geology of extreme racetrack and construction method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FGI | Letters patent sealed or granted (innovation patent) | ||
| MK22 | Patent ceased section 143a(d), or expired - non payment of renewal fee or expiry |