JPH0941494A - Construction method of building structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To stabilize a frame under erection particularly to wind and horizontal force at the time of an earthquake and heighten construction accuracy. SOLUTION: A steel framed core part 1 supports a support base end part 2a of a truss beam 2. A shed 3 corresponding to the application of an observatory, a restaurant or the like is constructed on the upper part of the truss beam 2. A diagonal truss 4 is built up diagonally between the base part of the steel framed core part 1 and a free tip part 2b of the truss beam 2 so as to support the free tip parts of the truss beam 2 and shed 3. A diagonal member 5 formed of a pipe or the like is built up in such a way as to intersect the middle part of the diagonal truss 4 and to be integrally connected thereto, with the upper end part connected to the upper end part of the steel framed core part 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for constructing a building structure, particularly a large-scale cantilever type building structure.

[0002]

2. Description of the Related Art Generally, a large-scale cantilever type building structure cannot be secured when a land or space for constructing a structure for supporting the cantilever beam structure can be secured below the beam-shaped building portion or at an exhibition or the like. In many cases, it is constructed as a novel building at the event venue, and the structure is unstable.

Conventionally, as a method of constructing this type of building structure, a method of assembling one member at a time while supporting it by a temporary support column or a gantry has been adopted.

[0004]

However, the above-mentioned conventional construction method has the following problems to be solved. 1) The frame in the middle of the process becomes very unstable, and since small members are assembled at high places, work efficiency is poor and it is difficult to secure the accuracy of the building. 2) Since a pin roller is provided at the connection between the top of the temporary support column and the building structure or the leg of the temporary support column, horizontal force cannot be applied, and as a result, the frame tends to become unstable.
Therefore, in many cases, it is not possible to secure a place to stretch a traverse wire or the like to bear the horizontal force. 3) In many cases, the beam-like building part is supported by diagonal members, but it is difficult to install a suspension scaffold for assembling and assembling the diagonal members.

The present invention has been made in order to solve the above-mentioned conventional problems, and an object thereof is to stabilize the frame structure during construction, particularly against wind and horizontal force during an earthquake, and to carry out construction. Construction that can improve accuracy, especially the safety of work for attaching and removing scaffolds for diagonal trusses, and the safety and work efficiency of construction (main tightening, welding, painting, etc.) work using the scaffolds It is to provide a method for constructing a structure.

[0006]

A method for constructing a building structure according to the present invention comprises constructing a core portion at a predetermined height and arranging an intermediate temporary support column in parallel with or before or after the construction work of the core portion. A diagonal member is built from the base located on the opposite side of the core portion with respect to the intermediate temporary support column toward the upper end of the core portion, and the diagonal member is connected and fixed to the top of the intermediate temporary support column. Build a diagonal truss from the base so as to intersect with the diagonal member, and connect and fix it to the top of the intermediate temporary column,
In parallel with or before or after the work of building the diagonal member or diagonal truss, an end temporary support pillar is erected from the vicinity of the base of the diagonal member, and the upper end of the diagonal truss is connected and fixed to the top of the pillar, and the core portion is further added. The truss beam is assembled between the upper end of the diagonal truss and the upper end of the diagonal truss, and a shed is constructed on the upper part of the truss beam, and finally the tops of the intermediate temporary support column and the end temporary support column are separated from the diagonal member and the diagonal truss. It is characterized by separating and removing. The core portion may have any structure such as a steel frame structure, a reinforced concrete structure, or a steel frame reinforced concrete structure. In addition, a jack box is provided on the top of the intermediate temporary support pillar or the end temporary support pillar to connect and fix the diagonal member or the diagonal truss via an interposing member, and the space between the jack boxes during the detaching and removing work. It is also characterized in that a jack and a camber are installed in the jack and the height of the insertion member and the number of the camber are alternately lowered or reduced while performing the expansion and contraction of the jack to perform the separation. Further, it is also characterized in that a scaffold is attached when the diagonal truss is grounded.

[0007]

An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 1 is a steel frame core portion, which supports a support base end portion 2 a of the truss beam 2. The steel core portion 1 provides a moving space such as an elevator and an emergency staircase, and a service space such as facility piping. Reference numeral 1a is a base portion of the steel core portion 1. A shed 3 is constructed above the truss beam 2. The shed 3 provides a use space according to the purpose of use such as an observation room and a restaurant. The steel core portion 1 is not limited to this, and may be a reinforced concrete core portion, a steel reinforced concrete core portion, or the like.

Reference numeral 4 denotes an oblique truss, which is installed obliquely between the base of the steel frame core 1 and the free tip 2b of the truss beam 2 so that the free tips of the truss beam 2 and the shed 3 are connected to each other. I support you. Reference numeral 5 denotes a diagonal member made of a pipe or the like, which intersects with the intermediate portion of the diagonal truss 4 and is integrally connected thereto, and its upper end portion is connected to the upper end portion of the steel frame core portion 1. Built in. G is the foundation.

Next, a method of constructing the building structure of the above embodiment will be described. First, as shown in FIG. 2, the steel frame core portion 1 is constructed from the lower layer portion. In this embodiment, each node of the steel core portion 1 is grounded, and the nodes are lifted one by one and assembled and connected. The intermediate temporary support column 6 is installed in parallel with or before or after the construction work of the steel frame core portion 1.

Subsequently, as shown in FIG. 3, the lower half of the diagonal member 5 is built. The base of the diagonal member 5 is fixed to the base G, and the upper portion is supported on the top of the intermediate temporary support column 6.

Further, as shown in FIG. 4, the lower half of the diagonal truss 4 is built. The base portion of the diagonal truss 4 is connected to the base portion of the steel frame core portion 1, and the upper portion is supported on the top portion of the intermediate temporary support column 6.

FIG. 5 shows the supporting state of the diagonal member 5 and the diagonal truss 4 at the top of the intermediate temporary support column 6. A joint is provided below the cross-connecting portion of the diagonal member 5 and the diagonal truss 4. The member 6a is integrally attached, and the joint member 6a is supported by the jack box 6b integrally attached to the top of the intermediate temporary column 6.
As shown in an enlarged manner in FIG. 6, an insertion member 6c made of H-shaped steel is inserted between the jack box 6b and the joint member 6a. The insertion member 6c is detachably attached by a fixing member such as a bolt.

Referring again to FIG. 4, reference numeral 7 denotes a temporary end support, which is centered around the intermediate temporary support 6 and has the steel core 1
Install at approximately symmetrical positions. Further, the upper part of the steel frame core portion 1 is also constructed in parallel with or before or after the above work.

Next, as shown in FIG. 7, the upper half of the diagonal member 5 is built up and its upper end is connected to the upper end of the steel frame core 1. Further, the upper half of the diagonal truss 4 is also built in and its upper end is connected to the upper end of the end temporary support column 7. The joint between the apex of the end temporary support column 7 and the diagonal truss 4 is also the joint member 6a and the jack box 6 described above.
It is connected and supported by the structure similar to b and the insertion member 6c.

Subsequently, as shown in FIG. 8, a truss beam 2 is constructed between the upper end of the steel frame core 1 and the upper end of the diagonal truss 4, and they are integrally connected to each other. A shed 3 is constructed on the truss beam 2.

When the construction of the building structure is completed, the intermediate temporary support column 6 and the end temporary support column 7 are removed. For example, in order to remove the intermediate temporary support column 6, first, as shown in FIG. 9, the jack 8 is set between the jack boxes 6b, and several cambers 9 (in this embodiment, 4).
Place one).

When the above preparation is completed, the interposing member 6c
Is separated from the joint member 6a, the jack 8 is operated, and the joint member 6a is slightly lifted via the camber 9 as shown in FIG.
As a result, a slight gap S is formed between the insertion member 6c and the joint member 6a.

In the jacked up state, as shown in FIG. 11, the insertion member 6c is inserted into the jack box 6b.
Separate from and remove. After removing the insertion member 6c, as shown in FIG. 12, another insertion member 6c 'is set and jack down is performed. The insertion member 6c '
Is shorter than the insertion member 6c.

Next, after removing one camber 9 (three in this embodiment), the jack 8 is actuated again to jack up the joint member 6a, as shown in FIG. The insertion member 6c 'is removed with the joint member 6a floating from the insertion member 6c', and then another insertion member 6c "is inserted as shown in FIG. The insertion member 6c ″ is shorter than the insertion member 6c ′.

Since the joint member 6a is integrated with the slant truss 4 and the slant member 5, the lowering of the joint member 6a is stopped while the above jack down operation is repeated several times. That is, the joint member 6a
Does not need to be supported by the jack 8, and is completely separated from the intermediate temporary support column 6. The separated intermediate temporary support column 6 is dismantled and removed. In addition, the end temporary support column 7
Similarly, repeat the jack-down operation to separate and then dismantle and remove.

FIG. 15 shows a scaffold 1 for working the truss beam 4 described above.
The installation state of 0 is shown, and the truss beam 4 is obliquely (at this embodiment, about 45 °) attached to the truss beam 4 when it is erected. The scaffolds 10 are arranged in parallel at appropriate intervals, and one side end of the scaffold 10 is suspended from the upper scaffold 10 by the chain 1.
It is held by 0a. 10b is a handrail and 11 is a safety net.

[0022]

【The invention's effect】

1) Since the diagonal member and the diagonal truss are connected and fixed to the top of the temporary support column, the frame structure is extremely stable especially against horizontal force, and the efficiency and accuracy of the construction work are improved. 2) The jack down can be performed stably and efficiently. 3) The scaffold of the diagonal truss can be assembled safely and efficiently.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of a building structure.

FIG. 2 is an explanatory diagram of a method for constructing the building structure of FIG.

FIG. 3 is an explanatory diagram of a method of constructing a building structure subsequent to FIG.

FIG. 4 is an explanatory diagram of a method of constructing a building structure subsequent to FIG.

FIG. 5 is an explanatory diagram of a supporting state of an oblique truss by an intermediate temporary support column.

FIG. 6 is an enlarged explanatory view of a main part of FIG.

FIG. 7 is an explanatory diagram of a method of constructing a building structure following FIG.

8 is an explanatory diagram of a method of constructing a building structure following FIG. 7. FIG.

FIG. 9 is an explanatory view of jacking down on a support portion of an oblique truss by an intermediate temporary support column.

FIG. 10 is an explanatory diagram of jacking down following FIG.

FIG. 11 is an explanatory diagram of the jackdown following FIG.

FIG. 12 is an explanatory diagram of jacking down following FIG. 11.

FIG. 13 is an explanatory diagram of jacking down following FIG.

FIG. 14 is an explanatory diagram of jacking down following FIG.

FIG. 15 is an explanatory diagram showing a mounting state of the scaffold of the truss beam.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Steel core part 1a Foundation part 2 Truss beam 2a Supporting base end part 2b Free tip part 3 Shedhouse 4 Oblique truss 5 Oblique member 6 Intermediate temporary support pillar 6a Joint member 6b Jack box 6c Inserting member 6c 'Inserting member 6c ″ Insert member 7 Temporary end support 8 Jack 9 Camber 10 Scaffold 10a Suspended chain 10b Handrail 11 Safety net G Base S S Gap

Front page continuation (72) Inventor Osamu Yoda 1-16-14 Shibuya, Shibuya-ku, Tokyo Tokyu Construction Co., Ltd. (72) Inventor Akira Tanabe 1-16-14 Shibuya, Shibuya-ku, Tokyo Tokyu Construction Shares In the company

Claims (3)

[Claims] 1. A base structure in which a core portion is constructed at a predetermined height, an intermediate temporary support pillar is erected in parallel with or before or after the construction work of the core portion, and the intermediate temporary support pillar is located on the opposite side of the core portion. From the above to the upper end of the core portion of the diagonal member and the diagonal member is connected and fixed to the top of the intermediate temporary support,
The diagonal truss is built from the base of the core portion so as to intersect with the diagonal member, and is connected and fixed to the top of the intermediate temporary support, and the diagonal member is installed in parallel with or before or after the diagonal member or diagonal truss building work. End tentative struts are erected from the vicinity of the base of the above, and the upper end of the diagonal truss is connected and fixed to the top thereof, and a truss beam is assembled between the upper end of the core and the upper end of the diagonal truss. A method for constructing a building structure, comprising constructing a shed on an upper part of a beam, and finally removing the tops of the intermediate temporary support pillar and the end temporary support pillar by separating them from the diagonal member and the diagonal truss. 2. A jack box is provided on the top of the intermediate temporary strut or the end temporary strut to connect and fix the diagonal member or the diagonal truss via an interposing member, and the jack is used in the detaching work. The jack and the camber are installed between the boxes, and the height of the insertion member and the number of the camber are alternately lowered or reduced while performing the expansion and contraction operation of the jack to perform the separation. Construction method of building structure. 3. The method for constructing a building structure according to claim 1, wherein a scaffold is attached when the diagonal truss is grounded.