JP2002342617A - System for supporting construction - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a construction support system capable of greatly reducing construction expenses without lowering the quality of a building. SOLUTION: This construction support system is provided with an estimate information storing means for collecting estimate information including an estimate amount of each contract type for work of an item related to construction from general contractors being bidding desiring dealers of the issue and from special contractors of each contract type for work and storing the estimate information, an estimate comparison list generating means for generating an estimate comparison list including the information of a general contractor that has presented the smallest total estimate amount of the issue on the basis of an estimate information group of the general contractors and the information of a special contractor that has presented the smallest estimate amount of the contract type for work of each contract type for work in a display element, and an estimate comparison list changing means for changing the display element in the case change of the estimated amount of the each contract type for work is instructed or in the case where the replacement with a special contractor that has presented an estimated amount lower than the estimated amount of the contract type for work presented by the general contractor is instructed, selects an excellent general contractor company with the lowest total amount on the estimate comparison list and decides a bidding destination of the issue.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a construction support system which is operated by a third party different from a client of a construction-related project and a contractor entrusted with the construction, and which supports the execution of the construction. The present invention relates to a construction support system having a function of greatly reducing construction costs without lowering the quality of buildings.

[0002]

2. Description of the Related Art For a building such as a house or an overpass, a contractor, which has received a construction request from a client, arranges a special contractor for each required construction among the constructions shown in FIG. Although construction work is performed, there are few cases where a contractor directly asks a special contractor for construction work. Usually, under a general construction company (so-called general contractor), subcontractors, grandchildren, and grandchildren are called. At present, there are a plurality of intermediate contractors hierarchically, and each specialized contractor carries out the corresponding works via these intermediate contractors.

Conventionally, in order to prepare an estimate of the construction cost of a building as described above, a construction drawing of the building is created based on the contents interviewed by a client, and then the construction work of the building is constructed from the design drawing. The amount of materials and parts to be used in the project is obtained, and the cost and incidental construction costs and various costs are calculated manually, or by using a CAD system or the like to create an estimate. Was. The flow of selection was from top to bottom, with a higher-level contractor selecting a lower-level contractor, such as a general subcontractor selecting subcontractors, and subcontracting selecting grandchildren. Also, in determining the estimated amount, the great-grandchild contractor added his own margin to the total of the contractor's estimated amount, and the grandchild contractor added his own margin to the total of the great-grandchild's estimated amount. The added amount is repeated and so on, and as a result, it is determined under a multilayer structure in which a plurality of unnecessary intermediate margins are added. In the construction industry, the rigging of everyday events is another major reason for raising construction costs and making it unclear.

[0004]

As described above, when constructing a building, the construction industry has a pyramid structure in which a plurality of intermediate contractors are present. There was a problem that a margin was required and construction costs soared. Also, the check function by a professional third party is often not working, it is not performed according to the design document, different materials are used, the construction method is different, etc.
There were problems, such as the need for overwork. Regarding the estimate of construction costs, the client can select a low-cost general construction company by having multiple general construction companies prepare an estimate, but contractors are specialized in various types of construction companies. At present, it is not possible to select a specialized construction company with a proven track record or a low-cost construction company. This is also the case when managing buildings after construction.There is also an intermediary between the management company and the repair contractor, which leads to a rise in management and construction costs and a decrease in the quality of repair work. Failure has occurred.

SUMMARY OF THE INVENTION The present invention has been made under the circumstances described above, and an object of the present invention is to provide a construction support system capable of greatly reducing construction costs without lowering the quality of a building. Is to provide. In addition, a construction support system capable of comprehensively supporting the execution of each project for a group of projects related to the construction from the design of the building to the maintenance of the construction and maintenance, maintenance, maintenance and the like after the construction. Is to provide.

[0006]

SUMMARY OF THE INVENTION The present invention relates to a construction support system which is operated by a third party different from a client of a project relating to construction and a contractor entrusted with the project to support the execution of the project. The above object of the present invention is to provide a communication terminal of a general contractor who is a bid applicant for the project and a specialized contractor for each contract type by providing estimation information including an estimated amount for each contract type of a construction project. From the estimated information storage means, which is collected via a communication network and stored in a recording medium, based on the stored estimated information group of the general contractor, and information on the general contractor whose estimated total amount of the case is the minimum amount and An estimate comparison list generating means for automatically generating an estimate comparison list including information of the specialized contractor whose estimated value of the contract type is the minimum amount for each of the contract types in a display element; When the change of the estimate is instructed or when the general contractor is instructed to replace it with a specialized contractor who has presented a lower estimate than the estimate of the contract type, the display element is automatically displayed. Means for changing the quote comparison list to be changed, and achieved by allowing the client of the matter to select a bidder for the matter by selecting the best total contractor and a good general contractor based on the estimate comparison list. Is done.

[0007] The project is a project relating to construction of a building; the project is a project relating to management of a building; an estimated total amount based on the accumulated estimation information group of the general contractor. The quotation information for each contract type of each general contractor is arranged and displayed in a low order or a high order, and based on the accumulated quotation information group of the specialized contractor, the estimated amount of each contract type is calculated. Providing a quotation comparison list display means for arranging the quotation information of each specialized contractor in the descending order or the ascending order and displaying the quotation comparison list;
For at least one of the projects related to the construction up to the maintenance such as maintenance, it is operated by a third party different from the client of the project and a contractor entrusted with the project. Each of which is more effectively achieved by being adapted to assist in the execution of said case.

Further, a design competition holding means for receiving a request for holding a design competition from a client, publishing information on the design matter of the client on the communication network and holding the design competition, and via the communication network. An application list generating means for generating a list of entries based on the information on the entries collected from the design offices, and selecting and ordering a design office based on the list information of the entries; By providing a case information publishing means for publishing the specification information of the case related to the construction so as to be viewable from the communication terminal via the communication network, each case can be more effectively achieved.

[0009] A desired condition registering means for collecting and registering desired conditions such as local conditions, construction type conditions, and scale conditions desired by the general contractor and the specialized contractor; A case information distributing means for distributing information of the case via the communication network to the contractor whose condition such as a work condition, a scale condition, etc. and the desired condition are matched; the construction registered as a member; A vendor page providing means for generating and providing its own vendor page as a web page to the vendor according to
In addition to displaying the own history information of the case where the applicant applied for the project and making an estimate on the trader page, the trader registration information such as the sales area and the type of work registered by the trader and the headquarters distribute the advertisement from the advertiser. The information is automatically collated with the information of the distribution area and the type of construction, etc., which have been requested, and the advertisement and information required by the trader are distributed to the trader page.

[0010] Further, when the project is a project relating to construction of a building, when an order for the project is established, the orderer is asked to provide a final price estimate based on the average price of a plurality of general contractors based on the low average value of several companies. A first charging unit for charging a fixed percentage of the price obtained by subtracting the determined amount as a fee; when the case is a case relating to building management, a management company in which a requester of the case is currently receiving a service; A second charging means for charging the requester of the case as a fee a fixed percentage of the price subtracted from the amount of the business consignment contract with the construction support system for the post-construction management work provided by the construction support system; If the project is a project related to improvement at each stage of the building design stage and construction stage, the profit generated by the proposal related to the improvement is charged and the difference between the amount before the proposal and the amount after the proposal is charged. And a third billing means for distributing the project to a requester of the project, a proposer of the proposal for the improvement, and a section for managing and operating the construction support system; In the case of a project related to a design competition in which information on the project related to the design is disclosed and a design competition is held, the requester of the case is charged and received with a competition holding deposit at the time of receiving the design competition. If the number of received design proposals is less than a certain number and the contract is not completed, the entire amount of the competition holding deposit will be returned, and if the contract is completed and the construction of the building concerned, the minimum total and excellent general contractor selection will be selected. If a bidder is determined by the method and the construction is ordered, the deposit for the competition will be applied to the actual cost of the construction support system for the project, and The design office that participated in the competition is provided with a fourth charging unit that charges no participation fee and charges a fixed percentage of the contract fee as a system usage fee to the design office for which the order has been established. That are each achieved more effectively.

[0011]

FIG. 1 shows an example of the entire configuration of a construction support system according to the present invention. The construction support system 3 is a system that comprehensively supports the design, estimation, construction, and post-building management of a building, and includes maintenance from building design to building, post-building maintenance, maintenance, and maintenance. At least one of the projects related to construction
The three cases are managed by a third party different from the client of the case and the contractor entrusted with the case to support the execution of the case. In the present embodiment, the supporting system 3 includes one or a plurality of construction support computers 21 having respective server functions such as a web server, a communication server, a database server, and a mail server, and various information groups related to the present system. Is connected to the communication terminal 1 on the user side via a communication network 2 such as the Internet. Hereinafter, the server system including the construction support computer 21 and the database 22 will be referred to as “server 20”.

The users of the construction support system 3 are mainly a building client (orderer, client, etc.) 11, and a general contractor (hereinafter, also referred to as a "general contractor").
12. Professional contractor (Professional construction company, professional management company, etc .:
Hereinafter, it is also referred to as “sub contractor”) 13.
Advertisers (architecture-related manufacturers, etc.) 14, design offices 15,
It is a general user 16. The communication terminal 1 on the user side is a general-purpose information processing terminal having a communication function, and includes a personal computer, a mobile phone, and a PDA (Personal Digital A
Various information processing terminals such as portable information communication devices such as ssistants) and navigation devices for automobiles can be used. The system operation department (hereinafter referred to as headquarters) 10 that operates and manages this system is responsible for planning, supervision,
It is a department that performs data aggregation, manages participating companies, creates and manages bids, and manages participating companies.
Using the communication terminal 1 or the like, the entire system is operated and managed using various functions of the server 20. The right to use various functions and the right to access the database 22 are restricted according to, for example, an ID indicating a user division such as a headquarters or a member, the type of information, and the use form.

In the following description, a case where various functions of the construction support system are used via the Internet will be described as an example. First, the main functions of the construction support system will be described.

FIG. 2 is a block diagram showing main functions of the construction support system 3. In FIG. 2, a design competition (design competition) holding support function 31 discloses a design project of a building using the Internet, and selects, from the collected works of each designer, works that meet the request of the client. The server 20 is a function that supports management up to the selection. As the server 20, means for publishing design projects on the Internet, means for distributing competition projects to members by means of transmission such as e-mail, etc., information on submitted works including quote information And a means for transmitting a list of submitted works to the client.

[0015] "Construction management support function (hereinafter" CM support function "or" CM service ")
32) is a multi-level structure of contracting companies, which is common knowledge in the construction industry, that is, as shown in FIG. 3A, a general contracting company (general contractor) 12, subcontractors, grandchildren, great-grandchildren, ...
.., The pyramid structure composed of a construction company (construction company) 13 is eliminated, and as shown in FIG. Its main purpose is to achieve a significant reduction in construction costs. In the present embodiment, the CM support function 32 discloses a construction project of a building using the Internet, and proposes a bidder (general contractor, specialized construction company).
This is a function to support the management from selecting the best combination of a general contracting company and a specialized construction company from the group of bid applicants and making a business request contract.

Regarding the CM support function 32, the server 20
A means for publishing CM cases on the Internet, a means for automatically selecting members suitable for the case by automatic matching of regional conditions and construction conditions, etc., and a means for distributing construction case information by means of transmitting e-mails etc. to the above-mentioned members , A means for browsing / searching detailed information on construction projects, a means for collecting estimated price information for each type of construction, and a selection list for selecting a combination of a general contractor and a specialized construction company with the lowest price suitable for local and scale conditions ( List of bid comparisons by vendor in order of lowest price,
Means for generating and changing an "estimated comparison list", an estimated amount after negotiation in the selection list, means for replacing a specialized construction company (estimated comparison list changing means), and the like.

The “property management support function (hereinafter referred to as“ PM support function ”or“ PM service ”) 33 is a service for reducing post-construction management costs for work related to post-construction management. The main purpose is to use the Internet to disclose building management projects and to recruit bidders (management companies, specialized companies by management type such as maintenance and periodic cleaning, etc.), and from among the bidders This function supports the management up to the selection of the optimal combination of the management company and the specialized company and the execution of the business request contract.

Regarding the PM support function 33, the server 20
Similar to the CM support function 32, PM on the Internet
Means for publishing cases, means for automatically selecting members suitable for the case by automatic matching of regional conditions and work type conditions, means for distributing management case information by means of transmitting e-mail etc. to the above-mentioned members, means for managing case details information Browsing function, means for collecting estimated price information for each management type, means for managing the lowest price suitable for local conditions and scale conditions, and means for generating a selection list for selecting a combination of specialized vendors, after negotiation in the selection list It is provided with an estimated amount of money, means for substituting a specialized trader, and the like.

The “value engineering / support function (hereinafter referred to as“ VE support function ”or“ VE service ”) 34 is used in a building design stage / construction stage.
A function of providing a design information group and a material information group and the like stored in a database and accepting proposals for cost reduction and material change of the project and supporting cost reduction at each stage. Equipped with browsing / searching means for design information group and material information group on the Internet, means for searching for low-cost material information, means for collecting proposal lists, means for generating order list based on adopted proposals, etc. ing.

As other support functions, using a support program of the server 20 and the Internet,
A function to obtain estimates and proposals for construction-related products, a function to deliver advertising information specialized in construction-related, and a recruitment and matching service for human resources specialized in construction based on accumulated human resources information. Function, support for material procurement based on accumulated material information, etc., function to provide business alliance information matching service based on accumulated company information, etc., request for building information based on accumulated member information, etc. Function to provide information for discovering a person (database browsing / search function), supervision function when a quote is obtained by a professional third party (to make a quote by a professional third party based on the specifications specified by the headquarters) "Prevent inflation of construction costs and differences in quantity; break the rigging between contractors by introducing the principle of competition; prevent the multi-layer structure of contractors; Estimates management features that bring the effect of such Ekku "), and a function of performing the management association consulting services.

Next, among the various functions described above, a design competition holding support function, a CM support function, a PM support function, and V
The E support function will be described with reference to the flowcharts of FIGS.

First, the design competition holding support function will be described. FIG. 4 shows the flow of processing related to the design competition holding support function.

In the construction support system 3, a request for holding a design competition for new construction or renewal of a building is received from the client 11 (step S11), and after examining the contents, a design competition is held (step S12). The information of the design project is disclosed on the Internet via a web server, and is also distributed to each design office registered in the present system by e-mail or the like (step S1).
3). In the construction support system 3 which has received the data of the intention to participate in the design competition, the project detail page and the estimation system (design competition method, etc.) are disclosed to the design office so that they can be viewed from the communication terminal (step S1).
4).

Thereafter, a question-and-answer session between the architect and the client is mediated on the server, and the two parties coordinate their intentions (step S1).
5) Receive the information on the submitted work (proposal materials, model image information, estimated price, etc.) from the communication terminal of the design office (or receive the model, etc. by mail), and submit the project name, design office, estimated price. The database is recorded in a searchable manner and recorded (step S15). Then, when the period of the design competition ends, the server 20 generates a list of the applied works based on the information of the applied works collected from each design office, and transmits the list information to the client, or It can be browsed from the communication terminal (step S16). The client is requested to submit materials related to the design contained in the received list information.
The estimated amount is considered, and if necessary, an interview is held with the designer (step S17). The client decides on the design office (designer) as a bidder and places an order with the design office. Is completed (step S18).

In the past, design competitions were mostly public projects, but by providing the design competition holding support function as described above, it is possible to hold a design competition from a single house. In addition, since the competition project is automatically distributed to the design offices and architects registered in the system, it is possible to act for sales. Also, the employed design office (designer) can advertise the advertisement. Note that the server 20 has a billing function, and when the design competition is accepted, the requester 11
Will be charged and received at the competition, and will not be returned or returned under certain conditions upon closing. For example, if the number of accepted design proposals is less than a certain number and the contract is not completed, the entire amount of the deposit held in the competition will be returned, but in principle, if the contract is made and ordered by CM method, it will not be returned . And, after the contract, C of this construction support system
If the M service is to be used continuously, the entire amount will be used for the actual cost of the construction support system side for the project (the system usage fee for the CM service). The above-mentioned billing of the competition deposit has a strong meaning to prevent mischief. In addition, the entry fee to the design office competition is free, and a method is adopted in which a certain percentage of the contract fee is charged as a system usage fee to the design office for which the order has been established and collected.

Next, the CM support function 32 will be described. The details of the electronic estimation process will be described later, and the entire flow will be described here. FIG. 5 shows the flow of processing related to the CM support function.
After receiving information on materials related to new construction or renewal construction of the building from the client 11 (step S21), and after examining the contents thereof (step S22), bid applicants are solicited for a certain period of time. As for the information on construction projects, limited information (project basic information, planned construction site, scale, etc.) is disclosed on the Internet via a web server, and the general contractor 12 and the specialized construction company 13 registered in this system are disclosed. (Step S23).

Further, detailed information of the construction project (basic project information, planned construction site, scale, recruited construction type, process,
In the construction support system 3, which has been set so that ordering briefings, questions and answers, design documents, and photographs of buildings, etc. can be viewed, and received data from the contractor indicating the intention to participate in bidding, the contractor (general contractor, specialized construction company) To the above-mentioned construction project details page (pages with information such as project basic information, planned construction site, scale, recruitment work type, process, ordering briefing session, question and answer, design documents, building photos, etc.) It is set to be viewable from the communication terminal 1, and the intentions of the trader and the client are adjusted through the intermediary of a question-and-answer session (step S2).
4) If necessary, after a site tour of a trader who wishes to bid (step S25), information on the bid (construction target, estimated price, etc.) is received from the communication terminal 1 of the trader (step S26). Then, participation in the bidding system (electronic quotation system) is accepted (step S27). The building support system negotiates with a number of low-priced contractors and negotiates (eg, negotiates prices with the contractors, negotiates to switch from a general contractor contractor to another specialized contractor, etc.). At that time, the server 20
Looking at the bid comparison list (estimated price comparison list) of the case automatically generated by the electronic quotation function of the head office 10 on the screen of the communication terminal 1 of the headquarters 10 Compare the amount with the specialized construction company, and if the other specialized company is low in price, show the replacement of the contractor of the construction type to the general contractor side, obtain the approval, request a re-estimation, and request The cost is determined (step S28). Then, the list of several companies selected finally by the bidding system of the server 20 is presented to the client 11 and the client 11
Selects the general contracting company 12 as one company. In this system, an order list is generated and transmitted to the communication terminal 1 of the general contractor 12 to indicate the client 11's intention to place a construction order. Do. If necessary, the system performs management after selecting a vendor, such as advice to the client in this process, and ends the processing of the case (step 2).
9).

By providing the CM support function as described above, it is possible to take a form in which the general contractor and the contractor are directly connected without going through the subcontractor, the subcontractor, etc., and the design support system 3 side Supervision function for obtaining quotes by a third-party professional (Estimate based on the specifications specified by the headquarters, to prevent inflated construction costs and differences in quantity; Destruction; prevention of the multi-layer structure of the contractor; advance check of the contents of the management of the contractor; etc.), the construction cost can be significantly reduced without lowering the quality of the building. Note that C
As a billing method for the M service, the server 20 calculates a price obtained by subtracting the final decision amount from the average price of the low-ranking companies of the total contractor estimate at the time of closing the contract, and charges a certain percentage of the subtracted price to the orderer. It is taking the method of doing.

Next, the PM support function 33 will be described. Since the flow is the same as that of the CM support function 32,
Here, the outline will be described. FIG. 6 shows the flow of processing related to the PM support function. The construction support system 3 receives information on materials related to the management of the building after construction from the client 11 (step S31), and the contents thereof. After the examination, the information of the case is disclosed on the Internet and distributed to the communication terminal 1 of the general management company (the general management company is equivalent to the general contractor in the CM) 12 and the specialized company (subcontractor in the CM) 13 for each management type. Then, accept bidders. The "specialized management by management type" referred to here is a specialized maintenance and inspection company (elevators, mechanical parking lots, disaster prevention and firefighting equipment, plumbing equipment, electrical equipment, etc.), management duties , A regular cleaning specialist, a storage and accounting specialist, an operation support specialist, and the like (steps S32 and S33). In the construction support system 3, an order briefing session is held for the purpose of explaining the question and answer and, if necessary, the ordering method and the outline of the property, and conducting a site tour of a bid applicant (steps S34, S35). Information related to the bidding (management type of contracted object, estimated amount, etc.) is received and stored from the communication terminal 1 of the trader (steps S36, S37), and a low-priced and excellent trader is obtained by using the bid comparison table of the case. (Step S38), select several companies that have presented low-priced and excellent business contents, presented them to the client 11, and presented them to the client 11.
Finally decides one such general management company. In this system, an order list is generated and transmitted to the communication terminal 1 of the general management company 12 to indicate the request of the client 11 for management consignment. I do. If necessary, the system performs management based on the selection of a management company or a company, such as advice to the client in this process, and ends the PM service processing for the case (step S39).

By providing the PM support function as described above, it is possible to reduce the management cost without reducing the quality. As a charging method for the PM service, at the time of closing the contract, the client charges a certain percentage of the price, which is subtracted through the PM service from the amount of the business consignment contract with the management company currently receiving the service, as a fee to the client as a fee. I am taking it.

Next, the VE support function 34 will be described. FIG. 7 shows the flow of processing relating to the “VE support function” for optimizing specifications and supporting cost reduction in the design stage and construction stage of a building to be newly built or repaired. The construction support system 3 publishes information on the VE project (eg, information on design documents and the like in the design stage, information on construction specifications in the construction stage) on the Internet via a web server (step S41). Proposals and information related to cost reductions in the design and construction stages of buildings due to design changes (plans, methods, construction methods, and construction procedures) aimed at eliminating design waste, and changes in materials and materials. During the period from the end to the conclusion of the construction contract contract, the information is distributed to the communication terminal 1 of the general contractor 12 and the specialized construction company 13 registered in the present system (step S42). After that, it is accepted on the contractor's page of the general contractor 12 and the specialized construction company 13 registered in the present system, and if necessary, proposals are received from contractors / Internet users other than the registered contractor. Then, the server 20 automatically converts the received proposal information into a proposal list, and transmits the proposal list to the client. The decision of adoption is made by the client, and the result of the adoption is transmitted only to the proposer, and the processing of the VE service ends. The headquarters inputs the cost reduction amount for each proposal to the VE service to the server 20 through the communication terminal 1 of the headquarters 10. The server 20 is provided with a VE service charging function, and generates a list of the case VE cost reduction amounts. In addition, the profits generated by the VE proposal will be distributed by the client, proposer, and headquarters. Further, the server 20 has a function of accumulating VE proposal information, design information, and material information, and releasing and providing the accumulated information on a trader page.

As a billing method for the VE service,
Profit generated by VE proposal (Amount before VE proposal-VE
The amount after the proposal is distributed among the client, the proposer, and the headquarters. With this billing method, a new profit structure can be established. As with other support functions, digital-based exchanges can significantly reduce business hours for both general contractors and specialized construction companies.
Further, as in the case of other support functions, the mail is distributed according to the type of work, each application, and the like, so that communication costs and the like can be reduced.

Next, the processing of the CM support function and the PM support function described above, in particular, the processing relating to the bidding method and the electronic estimation function of the present invention, will be described with reference mainly to FIG. 8 showing a main user interface. This will be described in detail.

First, a description will be given of member registration processing of a trader who uses the CM service and the PM service.

[0038] A trader who wants various support services (CM service, PM service, VE service, etc.) on the Internet accesses the homepage of the web server 20 from the communication terminal 1 via the communication network (the Internet in this example) 2. And open the registration page and enter the following company information, desired information related to construction (desired area, desired construction, desired scale, desired advertisement information, etc.), and temporary authentication information (desired login ID and password). Enter and register as a user (web member) of this system. FIG.
10 shows an example of a registration screen (web page). The company information includes a company name, a company communication address (address, telephone number, facsimile number, URL).
Etc.), "Basic company information" such as advertising information (specialty fields, etc.)
And "person in charge information" such as a person in charge, a department, a post, and a communication address of the person in charge. Also, select the desired area (business area of the trader) from the list of areas such as prefectures,
Further, a desired scale and a desired type of work are selected from the desired scale and the type of work. The server stores the input registration information in the database, and stores the authentication information (login ID,
(Password) is confirmed and notified to the trader concerned, and the registration process ends. A page for a trader (hereinafter referred to as a trader page) on which information for the trader is posted is generated for the trader who has registered as a member.

FIG. 11 is a schematic diagram showing a flow from when a trader applies for registration to when an estimate of a case (CM case, PM case) is created. The trader page H1 in FIG.
An example of the generated trader page is shown. Menus on the trader page include, for example, home, company information update, estimation history, matter search, and logout. On the home page, for example, advertisement information (desired advertisement information) of the trader registered at the time of application is posted, and the general user can browse through the Internet. Also, the company information at the time of application can be changed, when changing, enter the authentication information and access the trader page, select "Update Company Information" from the menu and open the page , Company information can be arbitrarily updated.

Next, the processing on the system operator side will be described. When a new case of new construction or renewal occurs, the headquarters 10 inputs authentication information of the headquarters from the communication terminal 1 and logs in to the management screen, inputs new case information, and registers the case. 12 and 13 show an example of a registration screen of basic information and detailed information of a new construction case. As shown in FIG. 12, the basic information of the case includes a genre (non-wooden, wooden), a case name, Information such as the orderer, the planned construction site, the structure, and the scale is input on the registration screen and registered. Further, as detailed information of the case, as shown in FIG. 13, the schedule of each process (estimation period, construction period, briefing session, question deadline, etc.) and the type of work required for the case are clicked on the registration screen. To register.

When the information of the new case is registered, the server 2
In the case of “0”, the information of the case is matched with the registration information of each registered trader by using the regional condition, the type of work condition, the scale condition, and the like as comparison elements, and a list of newly constructed case information for the trader is provided to the trader whose conditions match. Generate automatically. Then, the fact that there is a case matching the condition is delivered and notified to the trader by e-mail or the like, and the trader page 11
It can be viewed from. The screen of the trader page H1 in FIG. 11 shows an example of a search result screen when the function of “search for matter” included in the trader page is used. When the item of “search for matter” in the menu is clicked, Currently, a list of proposals currently being held for bids is displayed in order of arrival.

In this case list, the case number, case name, new construction / renewal classification, wooden / non-wooden classification, prefecture, estimation start / end period, current number of bids (total number of estimates,
(Estimated number of general contractors, estimated number of subcontractors) are displayed, and when a case number in the case list is clicked, a screen of basic information of the case as shown in FIG. 14 is displayed. If you want to know more detailed information, please refer to “Process”, “Construction type check”, “Property details / Estimation procedure”, “Building photo / Site photo”, “Design book download” By clicking on such an item, it is possible to browse or download the corresponding detailed information. Further, by clicking the items of “question and answer” and “inquiry”, a question and answer with the headquarters can be conducted in a conversation format via the trader page H1. Further, when "estimation history" in the above-mentioned menu is clicked, as shown in FIG. 15, history information of cases applied and quoted so far is displayed in order of arrival.

When a bid for a new project is desired, a subcontractor applies as a subcontracter, while a general contractor can select whether to apply as a general contractor or a subcontractor. When applying as a subcontractor, the general contractor itself is processed as a subcontractor. “Apply” on the screen of the case basic information in FIG.
Is clicked, an estimate input screen as shown in FIG. 16 is displayed. On the screen, an estimated amount and various expenses for each type of work are input. In the case of a general contractor, enter the estimated amount of all types of construction, and in the case of a subcontractor, enter the estimated amount of the type of construction. In the case of the sub-computer, the items of the desired type of work registered in advance are displayed so as to be identifiable by colors or the like, and only the corresponding items can be input.

FIG. 17 shows the flow of the electronic quotation processing. In the server 20 which has received the information of the estimated amount, a general contractor bidding result list and a subcontractor bidding result list are generated, and the trader who has presented the lower estimated amount is The general contractor bid result list F3 is the total amount (estimated total) so that it can be seen at a glance.
, And the subcontract bid results F4 are arranged in the order of the amount of money (or the order of the highest) for each type of work, and the bids of the items are compared on the screen of the communication terminal of the headquarters 10 respectively. It is displayed as a list (general contract estimated price comparison list F3 and sub-consumed estimated price comparison list F4). The general contractor estimated price comparison list F3 and the sub-consumer estimated price comparison list F4 are rearranged and displayed in real time in the above arrangement each time the information of the estimated price changed by the price negotiation is input. I have.

FIG. 18 shows a general contractor estimated price comparison list F3.
In the estimated price comparison list F3 of each general contractor 12, as shown in the figure, the name of the trader, the estimated price for each type of work, various expenses, and the like are displayed in the order of the lowest total estimated price, as shown in FIG. FIG. 19 is an example of a display screen of the sub-computer estimated price comparison list F4. The sub-computer estimated price comparison list F4 displays, for each type of work, the trader name and the estimated price of the type of work in descending order of the estimated price of the type of work. Is done.

In the head office 10, the estimated price comparison lists F3, F
4 from the communication terminal 1 to select a plurality of high-ranking traders with a low estimated total price and negotiate the price. At that time, as shown in FIG. 20, an analysis / evaluation list for selecting a supplier generated based on registered information such as a company guide, a quality management plan, a safety management plan, a resident correspondence, etc. The supplier analyzes / evaluates the optimal supplier including the price and selects the supplier.
This negotiation is carried out individually with each company such as telephone, facsimile, e-mail, etc. If there is a subcontractor showing a low estimated price for the construction type, the subcontractor shall inform the general contractor of the price and negotiate the price. I do. When the amount after the negotiation is corrected on the management screen, the server sorts and displays the estimated amount comparison list in ascending order of price.

When a decision is made to subcontract the construction work of the construction type to the subcontractor, for example, when the field of the contractor is clicked in the subcontractor estimate comparison list F4, the replacement of the contractor is automatically performed. The estimated amount of the type of construction in the general contractor estimated amount comparison list F3 is automatically changed, and is rearranged and displayed in ascending order of the total amount (estimated total amount). The replacement of these contractors (replacement with a sub-computer that presents a low price (the lowest price in this example)) and the rearrangement process are automatically performed by a program of the server 20. Thus, the design support system 3
Then, price negotiations and replacement of contractors are carried out to lower the price, and finally a bid is decided for the general contractor with the minimum total amount and the corresponding subcontractor.

FIG. 21 schematically shows the above-mentioned bidding method and the bidding result. In the example shown in the figure, first, one of a large number of specialized construction companies is low-priced for each construction type (scaffolding: c, painting:
o company, waterproof company: y company) were selected, and several companies (A company, D company, F company) were selected from many general contractors (A company, B company, C company, D company, E company, ...). After the selection of), negotiations for replacement of a specialized construction company will be conducted. As a result, the total amount of the company A who replaced the scaffolding work with the company c and the waterproofing work with the company y became the minimum amount, and this is an example in which the company A was decided as the general contractor.

[0046]

As described above, according to the present invention, a general contractor and a contractor of two levels of specialized contractors for each type of the contract are provided, and the estimated amount of the contract type presented by the general contractor is further provided. If there is an instruction for replacement to a specialized contractor who has presented a lower estimate, it will be replaced with that specialized contractor, the client will select a minimum total and a good general contractor and bid for the project Is determined, so that construction costs and the like can be significantly reduced as compared with the related art. In addition, the project is managed by a third party different from the client of the project and the contractor entrusted with the project to support the execution of the project, so construction costs are not reduced and construction costs are reduced. Etc. can be greatly reduced.

Further, in the PM business for a project relating to the management of a building after building, the principle of competition is introduced into a non-competitive and exclusive management form of a general management company, and low-priced and excellent business is carried out. Several management companies that have narrowed down the total management companies that provide the services through investigations and negotiations by the operation departments of this system (operating departments composed of a group of construction specialists) operated by a third-party organization The requester is selected from among the above to determine the bidding destination for the project, and similarly, bids are invited from specialists, and the specialists are changed after the investigation and negotiation of the above-mentioned management department. It is possible to greatly reduce the total management cost. In addition, VE services to support projects at each stage of the building to be newly built or repaired (projects related to optimization of specifications and cost reduction at each stage from the design stage of the building to the completion of construction) In
Reduction of construction costs can be expected based on proposals such as design changes and material changes for the purpose of eliminating waste at the design and construction stages. Until now, only limited proposals have been made, but the present invention allows proposals to be made over a wide and long period of time, enabling rational construction.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an example of the entire configuration of a construction support system according to the present invention.

FIG. 2 is a block diagram showing main functions of the system of the present invention.

FIG. 3 is a diagram showing a difference between a general construction mode in the construction industry and a construction mode in the system of the present invention.

FIG. 4 is a schematic flowchart showing the flow of processing related to a design competition holding support function.

FIG. 5 is a schematic flowchart showing the flow of processing related to the CM support function.

FIG. 6 is a schematic flowchart showing a flow of a process related to a PM support function.

FIG. 7 is a schematic flowchart showing a flow of processing related to a VE support function.

FIG. 8 is a diagram for explaining a main user interface of the system of the present invention.

FIG. 9 is a diagram illustrating an example of a user registration screen.

FIG. 10 is a sentence diagram of FIG. 9;

FIG. 11 is a schematic diagram showing a flow from when a trader applies for registration to when an estimate of a case is created.

FIG. 12 is a diagram showing an example of a registration screen of basic information of a new construction case.

FIG. 13 is a diagram illustrating an example of a registration screen of basic information of a new construction case.

FIG. 14 is a diagram illustrating an example of a case information screen displayed on the terminal side.

FIG. 15 is a diagram illustrating an example of a menu of a business page.

FIG. 16 is a diagram illustrating an example of an estimate input screen.

FIG. 17 is a diagram for explaining an electronic estimation process according to the present invention.

FIG. 18 is a diagram showing an example of a general contractor price comparison list.

FIG. 19 is a diagram showing an example of a sub-computer estimated amount comparison list.

FIG. 20 is a diagram showing an example of an analysis / evaluation list for selecting a trader.

FIG. 21 is a diagram schematically showing a bidding method and a bidding result according to the present invention.

FIG. 22 is a diagram illustrating an example of a construction type performed by a construction contractor.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Communication terminal 2 Communication network 3 Construction support system 10 System operation department (headquarters) 11 Client 12 General contractor (general contractor) 13 Specialized construction company / specialized management company (subcontractor) 14 Advertiser 15 Design office 16 General user 20 Server 21 Computer for construction support 22 Database

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) G06F 17/60 ZEC G06F 17/60 ZEC (72) Inventor Yukihiro Kono 8-14- Nishishinjuku, Shinjuku-ku, Tokyo 17 Space Key Inc.

Claims (13)

[Claims] Claims: 1. An estimate information including an estimated amount for each contract type of a construction project is transmitted from a communication terminal of a general contractor who is a bid applicant of the project and a communication terminal of a specialized contractor for each contract type via a communication network. Estimation information storage means that collects and stores the information in a recording medium, and information of the total contractor whose estimated total amount of the case is the lowest based on the accumulated estimation information group of the general contractor and the contract type. When an estimate comparison list generating unit that automatically generates an estimate comparison list including information on the specialized contractor whose contract type estimate is the minimum amount in the display element, and a change in the estimate amount for each contract type is instructed Alternatively, when the replacement of the display element is instructed by a special contractor who has provided a lower estimate than the estimate of the contract type presented by the general contractor, the display element automatically changes the display element. Construction change means, wherein the client of the case selects the best total contractor and an excellent general contractor based on the estimation comparison list and can determine the bidder of the case. system. 2. The construction support system according to claim 1, wherein the case is a case relating to construction of a building. 3. The construction support system according to claim 1, wherein the case is a case relating to management of a building. 4. A method of arranging and displaying the estimate information for each type of contract of each general contractor in the order of the total estimated cost based on the accumulated estimate information group of the general contractor, Estimation comparison list display means for arranging the estimation information of each specialized contractor in the order of the lowest or the highest estimated price for each contract type based on the accumulated estimation information group of the specialized contractor and displaying the estimation comparison list The construction support system according to any one of claims 1 to 3, further comprising: 5. The client of the project and at least one of the projects related to the construction from the design of the building to the maintenance of the building and maintenance, maintenance, maintenance and the like after the building. The construction support system according to any one of claims 1 to 4, wherein the construction support system is operated by a third party different from a contractor to which the case is entrusted to support the execution of the case. 6. A design competition holding means for receiving a request for holding a design competition from a client, publishing information on the design matter of the client on the communication network and holding a design competition, and via the communication network. An application list generating means for generating a list of entries based on the information on the entries collected from the respective design offices, and selecting and ordering a design office based on the list information of the entries. The construction support system according to any one of claims 1 to 5, wherein: 7. The construction support system according to claim 1, further comprising a case information publishing means for publishing specification information of the case related to the construction so as to be viewable from a communication terminal via the communication network. 8. A desired condition registering means for collecting and registering desired conditions such as a local condition, a type of work condition, and a scale condition desired by the general contractor and the specialized contractor; 8. A case information distributing means for distributing information of the case via the communication network to the contractor whose condition such as a type condition, a scale condition, and the like coincides with the desired condition. The construction support system described in Crab. 9. A contractor page providing means for generating and providing a contractor page as a web page to a contractor related to the construction registered as a member, and providing a contractor's own The history information is displayed so as to be viewable on the trader page, and the trader registration information such as the sales area and the type of work registered by the trader and the information such as the distribution area and the type of work for which the headquarters has received the advertisement distribution request from the advertiser are displayed. The construction support system according to any one of claims 1 to 8, wherein the construction is automatically collated to deliver advertisements and information required by the contractor to the contractor page. 10. In the case where the project is a project related to construction of a building, when an order for the project is established, the orderer is notified of the estimated value of the plurality of general contractors from the average price of the low-value companies. The construction support system according to any one of claims 1 to 9, further comprising: a first charging unit that charges a fixed percentage of the price obtained by subtracting the determined amount as a fee. 11. When the project is a project relating to management of a building, a post-construction management operation of the construction support system is performed based on a business consignment contract amount with a management company in which a requester of the project is currently receiving a service. 11. A second charging means for charging a requester of the case as a fee a fixed percentage of the price subtracted through the support service according to claim 1.
The construction support system according to any one of the above. 12. When the project is a project relating to improvement at each stage of a building design stage and a construction stage, a fee generated by the proposal relating to the improvement is charged, and the amount before the proposal and the amount after the proposal are charged. 12. A charging method according to claim 1, further comprising a third billing means for distributing a difference from the request to the requester of the matter, a proposer of the proposal for the improvement, and a department for managing and operating the construction support system. Construction support system as described. 13. In the case where the case is a case relating to a design competition in which information on a case relating to a design of a building is disclosed on the communication network to hold a design competition, At the time of accepting the design competition, the competition holding deposit is charged and received, and if the received design proposal is less than a certain number and did not close, the full amount of the competition holding deposit is returned, and if the contract is closed, In the case of building construction, when the bid is decided and the construction is ordered by the selection method of the minimum total amount and the excellent general contracting company, the competition holding deposit is paid by the construction support system side for the project. Participation fees are free for design offices that have allocated to actual expenses and participated in the design competition, and a certain percentage of the contract fee will be used by the system for the design office that has been ordered. The construction support system according to any one of claims 1 to 12, further comprising a fourth charging unit that charges and collects as a fee.